{"id":103765,"date":"2026-05-18T23:28:36","date_gmt":"2026-05-18T16:28:36","guid":{"rendered":"https:\/\/tiki.vn\/blog\/caffeine-la-gi-2\/"},"modified":"2026-05-18T23:28:36","modified_gmt":"2026-05-18T16:28:36","slug":"caffeine-la-gi-2","status":"publish","type":"post","link":"https:\/\/tiki.vn\/blog\/caffeine-la-gi-2\/","title":{"rendered":"Caffeine l\u00e0 g\u00ec? Caffeine t\u1ed1t hay x\u1ea5u cho s\u1ee9c kho\u1ebb?"},"content":{"rendered":"<p>Caffeine l\u00e0 ho\u1ea1t ch\u1ea5t quen thu\u1ed9c gi\u00fap duy tr\u00ec s\u1ef1 t\u1ec9nh t\u00e1o v\u00e0 t\u1eadp trung, xu\u1ea5t hi\u1ec7n ph\u1ed5 bi\u1ebfn trong c\u00e0 ph\u00ea, tr\u00e0 v\u00e0 nhi\u1ec1u lo\u1ea1i \u0111\u1ed3 u\u1ed1ng n\u0103ng l\u01b0\u1ee3ng. Tuy nhi\u00ean, kh\u00f4ng ph\u1ea3i ai c\u0169ng hi\u1ec3u r\u00f5 b\u1ea3n ch\u1ea5t Caffeine l\u00e0 g\u00ec, c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng ra sao v\u00e0 li\u1ec1u l\u01b0\u1ee3ng bao nhi\u00eau l\u00e0 an to\u00e0n cho s\u1ee9c kh\u1ecfe. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd cung c\u1ea5p c\u00e1i nh\u00ecn t\u1ed5ng quan v\u00e0 khoa h\u1ecdc v\u1ec1 Caffeine \u0111\u1ec3 b\u1ea1n c\u00f3 c\u00e1ch s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3 v\u00e0 l\u00e0nh m\u1ea1nh trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y.<\/p>\n<h2>1. M\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi li\u00ean quan<\/h2>\n<p><strong>Caffeine c\u00f3 t\u00e1c d\u1ee5ng trong bao l\u00e2u?<\/strong><br \/>\nCaffeine b\u1eaft \u0111\u1ea7u c\u00f3 t\u00e1c d\u1ee5ng sau kho\u1ea3ng 15 \u0111\u1ebfn 45 ph\u00fat k\u1ec3 t\u1eeb khi \u0111i v\u00e0o c\u01a1 th\u1ec3. Th\u1eddi gian b\u00e1n h\u1ee7y c\u1ee7a ho\u1ea1t ch\u1ea5t n\u00e0y th\u01b0\u1eddng dao \u0111\u1ed9ng t\u1eeb 4 \u0111\u1ebfn 6 ti\u1ebfng. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 sau kho\u1ea3ng 6 ti\u1ebfng, m\u1ed9t n\u1eeda l\u01b0\u1ee3ng caffeine v\u1eabn c\u00f2n t\u1ed3n t\u1ea1i trong m\u00e1u v\u00e0 ti\u1ebfp t\u1ee5c t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn h\u1ec7 th\u1ea7n kinh.<\/p>\n<p><strong>U\u1ed1ng bao nhi\u00eau caffeine l\u00e0 qu\u00e1 nhi\u1ec1u?<\/strong><br \/>\n\u0110\u1ed1i v\u1edbi ng\u01b0\u1eddi tr\u01b0\u1edfng th\u00e0nh kh\u1ecfe m\u1ea1nh, ng\u01b0\u1ee1ng ti\u00eau th\u1ee5 an to\u00e0n \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb l\u00e0 kh\u00f4ng qu\u00e1 400mg caffeine m\u1ed7i ng\u00e0y. Con s\u1ed1 n\u00e0y t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi kho\u1ea3ng 4 t\u00e1ch c\u00e0 ph\u00ea phin. Vi\u1ec7c ti\u00eau th\u1ee5 v\u01b0\u1ee3t ng\u01b0\u1ee1ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c t\u00ecnh tr\u1ea1ng nh\u01b0 b\u1ed3n ch\u1ed3n, tim \u0111\u1eadp nhanh ho\u1eb7c m\u1ea5t ng\u1ee7 nghi\u00eam tr\u1ecdng.<\/p>\n<p><strong>Caffeine c\u00f3 trong th\u1ef1c ph\u1ea9m n\u00e0o ngo\u00e0i c\u00e0 ph\u00ea?<\/strong><br \/>\nNgo\u00e0i c\u00e0 ph\u00ea, caffeine c\u00f2n \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y t\u1ef1 nhi\u00ean trong l\u00e1 tr\u00e0, h\u1ea1t cacao, h\u1ea1t guarana v\u00e0 l\u00e1 yerba mate. Ho\u1ea1t ch\u1ea5t n\u00e0y c\u0169ng xu\u1ea5t hi\u1ec7n trong nhi\u1ec1u lo\u1ea1i n\u01b0\u1edbc ng\u1ecdt c\u00f3 gas, n\u01b0\u1edbc t\u0103ng l\u1ef1c v\u00e0 m\u1ed9t s\u1ed1 lo\u1ea1i thu\u1ed1c gi\u1ea3m \u0111au ho\u1eb7c thu\u1ed1c \u0111i\u1ec1u tr\u1ecb c\u1ea3m c\u00fam d\u01b0\u1edbi d\u1ea1ng caffeine t\u1ed5ng h\u1ee3p.<\/p>\n<p><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u00e0o th\u1ea3i caffeine nhanh h\u01a1n?<\/strong><br \/>\nHi\u1ec7n t\u1ea1i kh\u00f4ng c\u00f3 ph\u01b0\u01a1ng ph\u00e1p n\u00e0o gi\u00fap lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n caffeine kh\u1ecfi c\u01a1 th\u1ec3 ngay l\u1eadp t\u1ee9c. Tuy nhi\u00ean, vi\u1ec7c u\u1ed1ng nhi\u1ec1u n\u01b0\u1edbc l\u1ecdc c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m b\u1edbt c\u00e1c tri\u1ec7u ch\u1ee9ng b\u1ed3n ch\u1ed3n. Ngo\u00e0i ra, vi\u1ec7c v\u1eadn \u0111\u1ed9ng nh\u1eb9 nh\u00e0ng ho\u1eb7c b\u1ed5 sung th\u1ef1c ph\u1ea9m gi\u00e0u ch\u1ea5t x\u01a1 c\u0169ng h\u1ed7 tr\u1ee3 qu\u00e1 tr\u00ecnh chuy\u1ec3n h\u00f3a t\u1ea1i gan di\u1ec5n ra \u1ed5n \u0111\u1ecbnh h\u01a1n.<\/p>\n<h2>2. Caffeine l\u00e0 g\u00ec?<\/h2>\n<p>Caffeine l\u00e0 m\u1ed9t h\u1ee3p ch\u1ea5t alkaloid c\u00f3 v\u1ecb \u0111\u1eafng, t\u1ed3n t\u1ea1i t\u1ef1 nhi\u00ean trong h\u01a1n 60 lo\u1ea1i th\u1ef1c v\u1eadt kh\u00e1c nhau. V\u1ec1 m\u1eb7t h\u00f3a h\u1ecdc, ho\u1ea1t ch\u1ea5t n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 1,3,7-trimethylxanthine. Trong t\u1ef1 nhi\u00ean, caffeine \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t lo\u1ea1i thu\u1ed1c tr\u1eeb s\u00e2u t\u1ef1 nhi\u00ean, gi\u00fap c\u00e2y tr\u1ed3ng ch\u1ed1ng l\u1ea1i c\u00e1c lo\u1ea1i c\u00f4n tr\u00f9ng g\u00e2y h\u1ea1i b\u1eb1ng c\u00e1ch g\u00e2y t\u00ea li\u1ec7t ho\u1eb7c ti\u00eau di\u1ec7t ch\u00fang.<\/p>\n<p>\u0110\u1ed1i v\u1edbi con ng\u01b0\u1eddi, caffeine \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i l\u00e0 m\u1ed9t ch\u1ea5t k\u00edch th\u00edch h\u1ec7 th\u1ea7n kinh trung \u01b0\u01a1ng. Khi \u0111i v\u00e0o c\u01a1 th\u1ec3, ho\u1ea1t ch\u1ea5t n\u00e0y kh\u00f4ng cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng d\u01b0\u1edbi d\u1ea1ng calo nh\u01b0ng l\u1ea1i c\u00f3 kh\u1ea3 n\u0103ng l\u00e0m thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i t\u00e2m th\u1ea7n, gi\u00fap \u0111\u1ea9y l\u00f9i c\u1ea3m gi\u00e1c m\u1ec7t m\u1ecfi v\u00e0 t\u0103ng kh\u1ea3 n\u0103ng t\u1eadp trung. Nh\u1edd \u0111\u1eb7c t\u00ednh n\u00e0y, caffeine tr\u1edf th\u00e0nh ho\u1ea1t ch\u1ea5t t\u00e1c \u0111\u1ed9ng t\u00e2m th\u1ea7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t tr\u00ean th\u1ebf gi\u1edbi.<\/p>\n<p>C\u01a1 quan Qu\u1ea3n l\u00fd Th\u1ef1c ph\u1ea9m v\u00e0 D\u01b0\u1ee3c ph\u1ea9m Hoa K\u1ef3 (FDA) v\u00e0 nhi\u1ec1u t\u1ed5 ch\u1ee9c y t\u1ebf qu\u1ed1c t\u1ebf coi caffeine v\u1eeba l\u00e0 ph\u1ee5 gia th\u1ef1c ph\u1ea9m v\u1eeba l\u00e0 d\u01b0\u1ee3c ph\u1ea9m. Ho\u1ea1t ch\u1ea5t n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng tan trong n\u01b0\u1edbc v\u00e0 ch\u1ea5t b\u00e9o, cho ph\u00e9p Caffeine d\u1ec5 d\u00e0ng v\u01b0\u1ee3t qua h\u00e0ng r\u00e0o m\u00e1u n\u00e3o \u0111\u1ec3 t\u00e1c \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn c\u00e1c t\u1ebf b\u00e0o th\u1ea7n kinh.<\/p>\n<h3>2.1. C\u00e1c ngu\u1ed3n ch\u1ee9a Caffeine ph\u1ed5 bi\u1ebfn trong t\u1ef1 nhi\u00ean<\/h3>\n<p>Ngu\u1ed3n cung c\u1ea5p caffeine ph\u1ed5 bi\u1ebfn nh\u1ea5t ch\u00ednh l\u00e0 <strong>h\u1ea1t c\u00e0 ph\u00ea<\/strong>. T\u00f9y thu\u1ed9c v\u00e0o gi\u1ed1ng c\u00e2y nh\u01b0 Arabica hay Robusta m\u00e0 h\u00e0m l\u01b0\u1ee3ng ho\u1ea1t ch\u1ea5t s\u1ebd c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t. Th\u00f4ng th\u01b0\u1eddng, Robusta ch\u1ee9a l\u01b0\u1ee3ng caffeine cao g\u1ea7n g\u1ea5p \u0111\u00f4i so v\u1edbi Arabica, mang l\u1ea1i v\u1ecb \u0111\u1eafng \u0111\u1eadm v\u00e0 t\u00e1c \u0111\u1ed9ng k\u00edch th\u00edch m\u1ea1nh m\u1ebd h\u01a1n.<\/p>\n<p>L\u00e1 tr\u00e0 c\u0169ng l\u00e0 m\u1ed9t ngu\u1ed3n ch\u1ee9a caffeine d\u1ed3i d\u00e0o. C\u00e1c lo\u1ea1i tr\u00e0 nh\u01b0 tr\u00e0 \u0111en, tr\u00e0 xanh hay tr\u00e0 \u00f4 long \u0111\u1ec1u ch\u1ee9a ho\u1ea1t ch\u1ea5t n\u00e0y. M\u1eb7c d\u00f9 l\u00e1 tr\u00e0 kh\u00f4 c\u00f3 t\u1ef7 l\u1ec7 caffeine cao h\u01a1n h\u1ea1t c\u00e0 ph\u00ea, nh\u01b0ng do l\u01b0\u1ee3ng d\u00f9ng khi pha tr\u00e0 \u00edt h\u01a1n n\u00ean n\u1ed3ng \u0111\u1ed9 ho\u1ea1t ch\u1ea5t trong m\u1ed9t t\u00e1ch tr\u00e0 th\u01b0\u1eddng th\u1ea5p h\u01a1n m\u1ed9t t\u00e1ch c\u00e0 ph\u00ea t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/p>\n<p><strong>Cacao<\/strong> v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m t\u1eeb <strong>chocolate<\/strong> c\u0169ng ch\u1ee9a m\u1ed9t l\u01b0\u1ee3ng caffeine nh\u1ea5t \u0111\u1ecbnh. Chocolate c\u00e0ng \u0111\u1eafng (h\u00e0m l\u01b0\u1ee3ng cacao c\u00e0ng cao) th\u00ec l\u01b0\u1ee3ng caffeine c\u00e0ng l\u1edbn. B\u00ean c\u1ea1nh \u0111\u00f3, c\u00e1c ngu\u1ed3n th\u1ef1c v\u1eadt \u00edt ph\u1ed5 bi\u1ebfn h\u01a1n t\u1ea1i Vi\u1ec7t Nam nh\u01b0 h\u1ea1t Guarana t\u1eeb v\u00f9ng Amazon hay l\u00e1 Yerba Mate t\u1eeb Nam M\u1ef9 c\u0169ng n\u1ed5i ti\u1ebfng v\u1edbi n\u1ed3ng \u0111\u1ed9 caffeine t\u1ef1 nhi\u00ean r\u1ea5t cao, th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng trong s\u1ea3n xu\u1ea5t n\u01b0\u1edbc t\u0103ng l\u1ef1c.<\/p>\n<h2>3. C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Caffeine trong c\u01a1 th\u1ec3<\/h2>\n<p>Sau khi \u0111\u01b0\u1ee3c ti\u00eau th\u1ee5 qua \u0111\u01b0\u1eddng u\u1ed1ng, caffeine nhanh ch\u00f3ng \u0111\u01b0\u1ee3c h\u1ea5p th\u1ee5 qua ni\u00eam m\u1ea1c d\u1ea1 d\u00e0y v\u00e0 ru\u1ed9t non. Qu\u00e1 tr\u00ecnh n\u00e0y di\u1ec5n ra r\u1ea5t nhanh, ch\u1ec9 m\u1ea5t kho\u1ea3ng 20 \u0111\u1ebfn 60 ph\u00fat \u0111\u1ec3 n\u1ed3ng \u0111\u1ed9 ho\u1ea1t ch\u1ea5t \u0111\u1ea1t m\u1ee9c t\u1ed1i \u0111a trong m\u00e1u. T\u1eeb h\u1ec7 tu\u1ea7n ho\u00e0n, caffeine di chuy\u1ec3n \u0111\u1ebfn gan v\u00e0 \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1ch th\u00e0nh c\u00e1c d\u1eabn xu\u1ea5t chuy\u1ec3n h\u00f3a tr\u01b0\u1edbc khi t\u00e1c \u0111\u1ed9ng l\u00ean n\u00e3o b\u1ed9.<\/p>\n<h3>3.1. Ng\u0103n ch\u1eb7n th\u1ee5 th\u1ec3 Adenosine &#8211; gi\u1ea3i ph\u00e1p \u0111\u1ea9y l\u00f9i c\u01a1n bu\u1ed3n ng\u1ee7<\/h3>\n<p>C\u01a1 ch\u1ebf ch\u00ednh y\u1ebfu khi\u1ebfn caffeine gi\u00fap con ng\u01b0\u1eddi t\u1ec9nh t\u00e1o li\u00ean quan \u0111\u1ebfn m\u1ed9t ph\u00e2n t\u1eed c\u00f3 t\u00ean l\u00e0 Adenosine. Trong su\u1ed1t th\u1eddi gian ch\u00fang ta th\u1ee9c, Adenosine li\u00ean t\u1ee5c \u0111\u01b0\u1ee3c s\u1ea3n sinh v\u00e0 t\u00edch t\u1ee5 trong n\u00e3o. Khi n\u1ed3ng \u0111\u1ed9 Adenosine \u0111\u1ea1t \u0111\u1ebfn m\u1ed9t m\u1ee9c \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh, ho\u1ea1t ch\u1ea5t n\u00e0y s\u1ebd g\u1eafn v\u00e0o c\u00e1c th\u1ee5 th\u1ec3 th\u1ea7n kinh, g\u1eedi t\u00edn hi\u1ec7u y\u00eau c\u1ea7u c\u01a1 th\u1ec3 ngh\u1ec9 ng\u01a1i v\u00e0 g\u00e2y ra c\u1ea3m gi\u00e1c bu\u1ed3n ng\u1ee7.<\/p>\n<p>Caffeine c\u00f3 c\u1ea5u tr\u00fac ph\u00e2n t\u1eed t\u01b0\u01a1ng \u0111\u1ed3ng v\u1edbi Adenosine. Nh\u1edd s\u1ef1 t\u01b0\u01a1ng \u0111\u1ed3ng n\u00e0y, caffeine c\u00f3 th\u1ec3 c\u1ea1nh tranh v\u00e0 chi\u1ebfm ch\u1ed7 c\u1ee7a Adenosine t\u1ea1i c\u00e1c th\u1ee5 th\u1ec3 th\u1ea7n kinh nh\u01b0ng l\u1ea1i kh\u00f4ng k\u00edch ho\u1ea1t t\u00edn hi\u1ec7u bu\u1ed3n ng\u1ee7. K\u1ebft qu\u1ea3 l\u00e0 n\u00e3o b\u1ed9 kh\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c th\u00f4ng tin v\u1ec1 s\u1ef1 m\u1ec7t m\u1ecfi, gi\u00fap ng\u01b0\u1eddi d\u00f9ng duy tr\u00ec tr\u1ea1ng th\u00e1i t\u1ec9nh t\u00e1o d\u00f9 c\u01a1 th\u1ec3 th\u1ef1c t\u1ebf \u0111ang c\u1ea7n ngh\u1ec9 ng\u01a1i.<\/p>\n<h3>3.2. K\u00edch th\u00edch Adrenaline v\u00e0 Dopamine<\/h3>\n<p>B\u00ean c\u1ea1nh vi\u1ec7c ng\u0103n ch\u1eb7n t\u00edn hi\u1ec7u bu\u1ed3n ng\u1ee7, caffeine c\u00f2n k\u00edch th\u00edch tuy\u1ebfn th\u01b0\u1ee3ng th\u1eadn gi\u1ea3i ph\u00f3ng Adrenaline. \u0110\u00e2y l\u00e0 lo\u1ea1i hormone &#8220;chi\u1ebfn \u0111\u1ea5u&#8221; gi\u00fap nh\u1ecbp tim t\u0103ng l\u00ean, huy\u1ebft \u00e1p t\u0103ng nh\u1eb9 v\u00e0 c\u00e1c m\u1ea1ch m\u00e1u gi\u00e3n n\u1edf \u0111\u1ec3 v\u1eadn chuy\u1ec3n nhi\u1ec1u oxy h\u01a1n \u0111\u1ebfn c\u01a1 b\u1eafp. Qu\u00e1 tr\u00ecnh n\u00e0y t\u1ea1o ra c\u1ea3m gi\u00e1c tr\u00e0n \u0111\u1ea7y n\u0103ng l\u01b0\u1ee3ng v\u00e0 s\u1eb5n s\u00e0ng cho c\u00e1c ho\u1ea1t \u0111\u1ed9ng th\u1ec3 ch\u1ea5t c\u01b0\u1eddng \u0111\u1ed9 cao.<\/p>\n<p>Caffeine c\u0169ng t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn h\u1ec7 th\u1ed1ng khen th\u01b0\u1edfng c\u1ee7a n\u00e3o b\u1eb1ng c\u00e1ch ng\u0103n ch\u1eb7n s\u1ef1 t\u00e1i h\u1ea5p th\u1ee5 Dopamine. Vi\u1ec7c duy tr\u00ec n\u1ed3ng \u0111\u1ed9 Dopamine cao trong c\u00e1c khe sin\u00e1p gi\u00fap c\u1ea3i thi\u1ec7n t\u00e2m tr\u1ea1ng, t\u1ea1o ra c\u1ea3m gi\u00e1c h\u01b0ng ph\u1ea5n nh\u1eb9 v\u00e0 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9ng l\u1ef1c l\u00e0m vi\u1ec7c. Tuy nhi\u00ean, c\u01a1 ch\u1ebf n\u00e0y c\u0169ng ch\u00ednh l\u00e0 l\u00fd do khi\u1ebfn m\u1ed9t s\u1ed1 ng\u01b0\u1eddi c\u1ea3m th\u1ea5y kh\u00f3 ch\u1ecbu ho\u1eb7c s\u1ee5t gi\u1ea3m t\u00e2m tr\u1ea1ng khi l\u01b0\u1ee3ng caffeine b\u1eaft \u0111\u1ea7u h\u1ebft t\u00e1c d\u1ee5ng.<\/p>\n<h2>4. L\u1ee3i \u00edch c\u1ee7a Caffeine \u0111\u1ed1i v\u1edbi s\u1ee9c kh\u1ecfe v\u00e0 hi\u1ec7u su\u1ea5t l\u00e0m vi\u1ec7c<\/h2>\n<p>Vi\u1ec7c s\u1eed d\u1ee5ng caffeine \u0111\u00fang li\u1ec1u l\u01b0\u1ee3ng mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch t\u00edch c\u1ef1c cho c\u1ea3 tr\u00ed tu\u1ec7 v\u00e0 th\u1ec3 ch\u1ea5t. Nhi\u1ec1u nghi\u00ean c\u1ee9u khoa h\u1ecdc \u0111\u00e3 ch\u1ee9ng minh r\u1eb1ng ho\u1ea1t ch\u1ea5t n\u00e0y kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 gi\u00fap t\u1ec9nh t\u00e1o t\u1ea1m th\u1eddi m\u00e0 c\u00f2n c\u00f3 nh\u1eefng \u0111\u00f3ng g\u00f3p l\u00e2u d\u00e0i cho s\u1ee9c kh\u1ecfe n\u1ebfu \u0111\u01b0\u1ee3c ti\u00eau th\u1ee5 m\u1ed9t c\u00e1ch khoa h\u1ecdc.<\/p>\n<h3>4.1. C\u1ea3i thi\u1ec7n ch\u1ee9c n\u0103ng nh\u1eadn th\u1ee9c v\u00e0 t\u00e2m tr\u1ea1ng<\/h3>\n<p>L\u1ee3i \u00edch r\u00f5 r\u1ec7t nh\u1ea5t c\u1ee7a caffeine l\u00e0 kh\u1ea3 n\u0103ng t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 nh\u1ea1y b\u00e9n c\u1ee7a c\u00e1c gi\u00e1c quan. Ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng ghi nh\u1eadn kh\u1ea3 n\u0103ng ghi nh\u1edb ng\u1eafn h\u1ea1n t\u1ed1t h\u01a1n, th\u1eddi gian ph\u1ea3n x\u1ea1 nhanh h\u01a1n v\u00e0 s\u1ef1 t\u1eadp trung cao \u0111\u1ed9 v\u00e0o c\u00e1c t\u00e1c v\u1ee5 ph\u1ee9c t\u1ea1p. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch cho nh\u1eefng ng\u01b0\u1eddi l\u00e0m c\u00f4ng vi\u1ec7c s\u00e1ng t\u1ea1o, l\u1eadp tr\u00ecnh ho\u1eb7c h\u1ecdc t\u1eadp trong th\u1eddi gian d\u00e0i.<\/p>\n<p>V\u1ec1 m\u1eb7t t\u00e2m l\u00fd, li\u1ec1u l\u01b0\u1ee3ng caffeine v\u1eeba ph\u1ea3i gi\u00fap gi\u1ea3m b\u1edbt c\u1ea3m gi\u00e1c ch\u00e1n n\u1ea3n v\u00e0 lo \u00e2u nh\u1eb9. B\u1eb1ng c\u00e1ch k\u00edch th\u00edch s\u1ea3n sinh c\u00e1c ch\u1ea5t d\u1eabn truy\u1ec1n th\u1ea7n kinh c\u00f3 l\u1ee3i, caffeine h\u1ed7 tr\u1ee3 duy tr\u00ec tr\u1ea1ng th\u00e1i tinh th\u1ea7n t\u00edch c\u1ef1c. M\u1ed9t s\u1ed1 kh\u1ea3o s\u00e1t quy m\u00f4 l\u1edbn cho th\u1ea5y ng\u01b0\u1eddi u\u1ed1ng c\u00e0 ph\u00ea \u0111\u1ec1u \u0111\u1eb7n c\u00f3 nguy c\u01a1 m\u1eafc c\u00e1c tri\u1ec7u ch\u1ee9ng tr\u1ea7m c\u1ea3m th\u1ea5p h\u01a1n so v\u1edbi ng\u01b0\u1eddi ho\u00e0n to\u00e0n kh\u00f4ng s\u1eed d\u1ee5ng.<\/p>\n<h3>4.2. H\u1ed7 tr\u1ee3 trao \u0111\u1ed5i ch\u1ea5t v\u00e0 gi\u1ea3m c\u00e2n<\/h3>\n<p>Caffeine l\u00e0 m\u1ed9t trong s\u1ed1 \u00edt c\u00e1c h\u1ee3p ch\u1ea5t t\u1ef1 nhi\u00ean c\u00f3 kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 \u0111\u1ed1t ch\u00e1y ch\u1ea5t b\u00e9o hi\u1ec7u qu\u1ea3. Ho\u1ea1t ch\u1ea5t n\u00e0y l\u00e0m t\u0103ng t\u1ef7 l\u1ec7 trao \u0111\u1ed5i ch\u1ea5t c\u01a1 b\u1ea3n (BMR) th\u00eam kho\u1ea3ng 3% \u0111\u1ebfn 11%. \u0110i\u1ec1u n\u00e0y \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c c\u01a1 th\u1ec3 s\u1ebd ti\u00eau hao nhi\u1ec1u calo h\u01a1n ngay c\u1ea3 khi \u0111ang \u1edf tr\u1ea1ng th\u00e1i ngh\u1ec9 ng\u01a1i.<\/p>\n<p>Ngo\u00e0i ra, caffeine k\u00edch th\u00edch h\u1ec7 th\u1ea7n kinh g\u1eedi t\u00edn hi\u1ec7u tr\u1ef1c ti\u1ebfp \u0111\u1ebfn c\u00e1c m\u00f4 m\u1ee1, y\u00eau c\u1ea7u ph\u00e2n gi\u1ea3i ch\u1ea5t b\u00e9o th\u00e0nh c\u00e1c axit b\u00e9o t\u1ef1 do trong m\u00e1u \u0111\u1ec3 l\u00e0m ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng. Tuy nhi\u00ean, l\u1ee3i \u00edch n\u00e0y s\u1ebd ph\u00e1t huy t\u1ed1t nh\u1ea5t khi ng\u01b0\u1eddi d\u00f9ng k\u1ebft h\u1ee3p v\u1edbi ch\u1ebf \u0111\u1ed9 \u0103n u\u1ed1ng l\u00e0nh m\u1ea1nh v\u00e0 kh\u00f4ng th\u00eam qu\u00e1 nhi\u1ec1u \u0111\u01b0\u1eddng ho\u1eb7c s\u1eefa v\u00e0o \u0111\u1ed3 u\u1ed1ng ch\u1ee9a caffeine.<\/p>\n<h3>4.3. T\u0103ng c\u01b0\u1eddng hi\u1ec7u su\u1ea5t v\u1eadn \u0111\u1ed9ng th\u1ec3 ch\u1ea5t<\/h3>\n<p>Trong l\u0129nh v\u1ef1c th\u1ec3 thao, caffeine \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t ch\u1ea5t h\u1ed7 tr\u1ee3 hi\u1ec7u n\u0103ng an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3. Khi s\u1eed d\u1ee5ng tr\u01b0\u1edbc bu\u1ed5i t\u1eadp kho\u1ea3ng 30 \u0111\u1ebfn 60 ph\u00fat, ho\u1ea1t ch\u1ea5t n\u00e0y gi\u00fap gi\u1ea3m c\u1ea3m gi\u00e1c g\u1eafng s\u1ee9c (RPE). Ng\u01b0\u1eddi t\u1eadp s\u1ebd c\u1ea3m th\u1ea5y c\u00e1c b\u00e0i v\u1eadn \u0111\u1ed9ng tr\u1edf n\u00ean nh\u1eb9 nh\u00e0ng h\u01a1n so v\u1edbi b\u00ecnh th\u01b0\u1eddng, t\u1eeb \u0111\u00f3 c\u00f3 th\u1ec3 k\u00e9o d\u00e0i th\u1eddi gian t\u1eadp luy\u1ec7n.<\/p>\n<p>S\u1ef1 gia t\u0103ng Adrenaline do caffeine th\u00fac \u0111\u1ea9y c\u0169ng gi\u00fap c\u01a1 b\u1eafp ho\u1ea1t \u0111\u1ed9ng m\u1ea1nh m\u1ebd v\u00e0 d\u1ebbo dai h\u01a1n. \u0110\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c m\u00f4n th\u1ec3 thao s\u1ee9c b\u1ec1n nh\u01b0 ch\u1ea1y b\u1ed9, \u0111\u1ea1p xe hay b\u01a1i l\u1ed9i, caffeine h\u1ed7 tr\u1ee3 c\u01a1 th\u1ec3 \u01b0u ti\u00ean s\u1eed d\u1ee5ng m\u1ee1 th\u1eeba l\u00e0m n\u0103ng l\u01b0\u1ee3ng, gi\u00fap ti\u1ebft ki\u1ec7m l\u01b0\u1ee3ng glycogen d\u1ef1 tr\u1eef trong c\u01a1 b\u1eafp \u0111\u1ec3 d\u00e0nh cho nh\u1eefng giai \u0111o\u1ea1n b\u1ee9t ph\u00e1 cu\u1ed1i c\u00f9ng.<\/p>\n<h3>4.4. L\u1ee3i \u00edch s\u1ee9c kh\u1ecfe d\u00e0i h\u1ea1n<\/h3>\n<ul>\n<li>Gi\u1ea3m nguy c\u01a1 m\u1eafc b\u1ec7nh Parkinson: C\u00e1c nghi\u00ean c\u1ee9u ch\u1ec9 ra r\u1eb1ng ng\u01b0\u1eddi ti\u00eau th\u1ee5 caffeine th\u01b0\u1eddng xuy\u00ean c\u00f3 nguy c\u01a1 m\u1eafc b\u1ec7nh Parkinson th\u1ea5p h\u01a1n \u0111\u00e1ng k\u1ec3 nh\u1edd kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 c\u00e1c t\u1ebf b\u00e0o th\u1ea7n kinh s\u1ea3n sinh Dopamine.<\/li>\n<li>Ph\u00f2ng ng\u1eeba b\u1ec7nh Alzheimer: Th\u00f3i quen u\u1ed1ng c\u00e0 ph\u00ea v\u1eeba ph\u1ea3i trong th\u1eddi gian d\u00e0i li\u00ean quan \u0111\u1ebfn vi\u1ec7c gi\u1ea3m nguy c\u01a1 suy gi\u1ea3m nh\u1eadn th\u1ee9c v\u00e0 c\u00e1c b\u1ec7nh m\u1ea5t tr\u00ed nh\u1edb \u1edf ng\u01b0\u1eddi cao tu\u1ed5i.<\/li>\n<li>B\u1ea3o v\u1ec7 ch\u1ee9c n\u0103ng gan: Caffeine v\u00e0 c\u00e1c h\u1ee3p ch\u1ea5t ch\u1ed1ng oxy h\u00f3a trong c\u00e0 ph\u00ea h\u1ed7 tr\u1ee3 gi\u1ea3m nguy c\u01a1 x\u01a1 gan v\u00e0 ung th\u01b0 gan.<\/li>\n<li>H\u1ed7 tr\u1ee3 ng\u0103n ng\u1eeba ti\u1ec3u \u0111\u01b0\u1eddng lo\u1ea1i 2: Vi\u1ec7c duy tr\u00ec li\u1ec1u l\u01b0\u1ee3ng caffeine \u1ed5n \u0111\u1ecbnh gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u1ed9 nh\u1ea1y insulin, h\u1ed7 tr\u1ee3 ki\u1ec3m so\u00e1t \u0111\u01b0\u1eddng huy\u1ebft hi\u1ec7u qu\u1ea3 h\u01a1n.<\/li>\n<\/ul>\n<h2>5. Nh\u1eefng t\u00e1c d\u1ee5ng ph\u1ee5 v\u00e0 l\u01b0u \u00fd khi s\u1eed d\u1ee5ng qu\u00e1 li\u1ec1u<\/h2>\n<p>M\u1eb7c d\u00f9 mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch, caffeine v\u1eabn l\u00e0 m\u1ed9t ho\u1ea1t ch\u1ea5t k\u00edch th\u00edch c\u00f3 th\u1ec3 g\u00e2y ra nh\u1eefng t\u00e1c \u0111\u1ed9ng ti\u00eau c\u1ef1c n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd. Ph\u1ea3n \u1ee9ng c\u1ee7a m\u1ed7i c\u00e1 nh\u00e2n v\u1edbi caffeine r\u1ea5t kh\u00e1c nhau, ph\u1ee5 thu\u1ed9c v\u00e0o c\u01a1 \u0111\u1ecba, c\u00e2n n\u1eb7ng, \u0111\u1ed9 tu\u1ed5i v\u00e0 m\u1ee9c \u0111\u1ed9 nh\u1ea1y c\u1ea3m c\u1ee7a h\u1ec7 th\u1ea7n kinh.<\/p>\n<h3>5.1. \u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn gi\u1ea5c ng\u1ee7 v\u00e0 t\u00e2m l\u00fd<\/h3>\n<p>T\u00e1c d\u1ee5ng ph\u1ee5 ph\u1ed5 bi\u1ebfn nh\u1ea5t c\u1ee7a caffeine l\u00e0 g\u00e2y r\u1ed1i lo\u1ea1n gi\u1ea5c ng\u1ee7. Do kh\u1ea3 n\u0103ng ng\u0103n ch\u1eb7n Adenosine k\u00e9o d\u00e0i, vi\u1ec7c ti\u00eau th\u1ee5 caffeine v\u00e0o bu\u1ed5i chi\u1ec1u mu\u1ed9n ho\u1eb7c bu\u1ed5i t\u1ed1i c\u00f3 th\u1ec3 khi\u1ebfn b\u1ea1n kh\u00f3 \u0111i v\u00e0o gi\u1ea5c ng\u1ee7 ho\u1eb7c l\u00e0m gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng gi\u1ea5c ng\u1ee7 s\u00e2u. Thi\u1ebfu ng\u1ee7 k\u00e9o d\u00e0i d\u1eabn \u0111\u1ebfn m\u1ec7t m\u1ecfi v\u00e0o ng\u00e0y h\u00f4m sau, khi\u1ebfn ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i t\u00ecm \u0111\u1ebfn nhi\u1ec1u caffeine h\u01a1n, t\u1ea1o th\u00e0nh m\u1ed9t v\u00f2ng l\u1eb7p ph\u1ee5 thu\u1ed9c kh\u00f4ng l\u00e0nh m\u1ea1nh.<\/p>\n<p>V\u1edbi nh\u1eefng ng\u01b0\u1eddi nh\u1ea1y c\u1ea3m, caffeine c\u00f3 th\u1ec3 g\u00e2y ra tr\u1ea1ng th\u00e1i lo \u00e2u, b\u1ed3n ch\u1ed3n, run tay ho\u1eb7c h\u1ed3i h\u1ed9p \u0111\u00e1nh tr\u1ed1ng ng\u1ef1c. Khi n\u1ed3ng \u0111\u1ed9 ho\u1ea1t ch\u1ea5t trong m\u00e1u qu\u00e1 cao, h\u1ec7 th\u1ea7n kinh b\u1ecb k\u00edch th\u00edch qu\u00e1 m\u1ee9c d\u1eabn \u0111\u1ebfn kh\u00f3 t\u1eadp trung, d\u1ec5 c\u00e1u g\u1eaft v\u00e0 c\u0103ng th\u1eb3ng th\u1ea7n kinh.<\/p>\n<h3>5.2. T\u00e1c \u0111\u1ed9ng \u0111\u1ebfn h\u1ec7 ti\u00eau h\u00f3a v\u00e0 huy\u1ebft \u00e1p<\/h3>\n<p>Caffeine k\u00edch th\u00edch d\u1ea1 d\u00e0y ti\u1ebft ra nhi\u1ec1u axit d\u1ecbch v\u1ecb h\u01a1n. \u0110\u1ed1i v\u1edbi ng\u01b0\u1eddi c\u00f3 ti\u1ec1n s\u1eed vi\u00eam lo\u00e9t d\u1ea1 d\u00e0y ho\u1eb7c tr\u00e0o ng\u01b0\u1ee3c d\u1ea1 d\u00e0y th\u1ef1c qu\u1ea3n (GERD), vi\u1ec7c u\u1ed1ng c\u00e0 ph\u00ea khi b\u1ee5ng \u0111\u00f3i c\u00f3 th\u1ec3 g\u00e2y ra c\u1ea3m gi\u00e1c \u1ee3 n\u00f3ng, \u0111au r\u00e1t v\u00f9ng th\u01b0\u1ee3ng v\u1ecb. Ngo\u00e0i ra, ho\u1ea1t ch\u1ea5t n\u00e0y c\u00f2n c\u00f3 t\u00e1c d\u1ee5ng nhu\u1eadn tr\u00e0ng nh\u1eb9, c\u00f3 th\u1ec3 g\u00e2y kh\u00f3 ti\u00eau ho\u1eb7c ti\u00eau ch\u1ea3y \u1edf m\u1ed9t s\u1ed1 \u0111\u1ed1i t\u01b0\u1ee3ng.<\/p>\n<p>V\u1ec1 h\u1ec7 tim m\u1ea1ch, caffeine g\u00e2y co m\u1ea1ch t\u1ea1m th\u1eddi, d\u1eabn \u0111\u1ebfn s\u1ef1 gia t\u0103ng huy\u1ebft \u00e1p nh\u1eb9 trong m\u1ed9t kho\u1ea3ng th\u1eddi gian ng\u1eafn sau khi s\u1eed d\u1ee5ng. M\u1eb7c d\u00f9 hi\u1ec7u \u1ee9ng n\u00e0y kh\u00f4ng g\u00e2y nguy hi\u1ec3m cho ng\u01b0\u1eddi kh\u1ecfe m\u1ea1nh, nh\u01b0ng nh\u1eefng b\u1ec7nh nh\u00e2n c\u00f3 ti\u1ec1n s\u1eed cao huy\u1ebft \u00e1p ho\u1eb7c b\u1ec7nh l\u00fd tim m\u1ea1ch c\u1ea7n th\u1eadn tr\u1ecdng v\u00e0 tham kh\u1ea3o \u00fd ki\u1ebfn b\u00e1c s\u0129 v\u1ec1 li\u1ec1u l\u01b0\u1ee3ng ph\u00f9 h\u1ee3p.<\/p>\n<h3>5.3. \u0110\u1ed1i t\u01b0\u1ee3ng c\u1ea7n h\u1ea1n ch\u1ebf s\u1eed d\u1ee5ng Caffeine<\/h3>\n<p>Ph\u1ee5 n\u1eef mang thai l\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng c\u1ea7n \u0111\u1eb7c bi\u1ec7t l\u01b0u \u00fd v\u00ec caffeine c\u00f3 kh\u1ea3 n\u0103ng \u0111i qua nhau thai v\u00e0 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn thai nhi. C\u00e1c t\u1ed5 ch\u1ee9c y t\u1ebf khuy\u1ebfn c\u00e1o ph\u1ee5 n\u1eef trong thai k\u1ef3 kh\u00f4ng n\u00ean ti\u00eau th\u1ee5 qu\u00e1 200mg caffeine m\u1ed7i ng\u00e0y \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a b\u00e9.<\/p>\n<p>Tr\u1ebb em v\u00e0 thanh thi\u1ebfu ni\u00ean c\u0169ng n\u00ean h\u1ea1n ch\u1ebf s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i \u0111\u1ed3 u\u1ed1ng ch\u1ee9a caffeine nh\u01b0 n\u01b0\u1edbc t\u0103ng l\u1ef1c hay c\u00e0 ph\u00ea \u0111\u1eadm \u0111\u1eb7c. H\u1ec7 th\u1ea7n kinh c\u1ee7a tr\u1ebb v\u1eabn \u0111ang trong giai \u0111o\u1ea1n ph\u00e1t tri\u1ec3n v\u00e0 r\u1ea5t nh\u1ea1y c\u1ea3m v\u1edbi c\u00e1c ch\u1ea5t k\u00edch th\u00edch, d\u1ec5 d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng r\u1ed1i lo\u1ea1n gi\u1ea5c ng\u1ee7 v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00e2m l\u00fd. Ngo\u00e0i ra, nh\u1eefng ng\u01b0\u1eddi \u0111ang \u0111i\u1ec1u tr\u1ecb c\u00e1c b\u1ec7nh l\u00fd v\u1ec1 r\u1ed1i lo\u1ea1n lo \u00e2u, m\u1ea5t ng\u1ee7 kinh ni\u00ean ho\u1eb7c \u0111ang s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i thu\u1ed1c \u0111\u1eb7c tr\u1ecb c\u00f3 t\u01b0\u01a1ng t\u00e1c v\u1edbi caffeine c\u0169ng c\u1ea7n s\u1ef1 t\u01b0 v\u1ea5n t\u1eeb chuy\u00ean gia y t\u1ebf.<\/p>\n<h2>6. H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng Caffeine an to\u00e0n v\u00e0 th\u00f4ng minh<\/h2>\n<p>\u0110\u1ec3 t\u1eadn d\u1ee5ng t\u1ed1i \u0111a nh\u1eefng \u01b0u \u0111i\u1ec3m c\u1ee7a caffeine m\u00e0 kh\u00f4ng g\u1eb7p ph\u1ea3i c\u00e1c t\u00e1c d\u1ee5ng ph\u1ee5 kh\u00f4ng mong mu\u1ed1n, ng\u01b0\u1eddi d\u00f9ng c\u1ea7n x\u00e2y d\u1ef1ng m\u1ed9t l\u1ed9 tr\u00ecnh ti\u00eau th\u1ee5 khoa h\u1ecdc. Hi\u1ec3u r\u00f5 ng\u01b0\u1ee1ng ch\u1ecbu \u0111\u1ef1ng c\u1ee7a b\u1ea3n th\u00e2n v\u00e0 l\u1ef1a ch\u1ecdn th\u1eddi \u0111i\u1ec3m s\u1eed d\u1ee5ng h\u1ee3p l\u00fd l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 duy tr\u00ec s\u1ef1 t\u1ec9nh t\u00e1o b\u1ec1n v\u1eefng.<\/p>\n<h3>6.1. Li\u1ec1u l\u01b0\u1ee3ng khuy\u1ebfn ngh\u1ecb h\u00e0ng ng\u00e0y<\/h3>\n<p>\u0110\u1ed1i v\u1edbi m\u1ed9t ng\u01b0\u1eddi tr\u01b0\u1edfng th\u00e0nh kh\u1ecfe m\u1ea1nh, li\u1ec1u l\u01b0\u1ee3ng <strong>400mg caffeine<\/strong> m\u1ed7i ng\u00e0y \u0111\u01b0\u1ee3c xem l\u00e0 ng\u01b0\u1ee1ng an to\u00e0n t\u1ed1i \u01b0u. Con s\u1ed1 n\u00e0y t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi kho\u1ea3ng 3 \u0111\u1ebfn 4 t\u00e1ch c\u00e0 ph\u00ea ti\u00eau chu\u1ea9n. Tuy nhi\u00ean, con s\u1ed1 n\u00e0y kh\u00f4ng n\u00ean \u0111\u01b0\u1ee3c ti\u00eau th\u1ee5 c\u00f9ng m\u1ed9t l\u00fac. Vi\u1ec7c chia nh\u1ecf li\u1ec1u l\u01b0\u1ee3ng trong ng\u00e0y gi\u00fap duy tr\u00ec n\u1ed3ng \u0111\u1ed9 ho\u1ea1t ch\u1ea5t \u1ed5n \u0111\u1ecbnh trong m\u00e1u, tr\u00e1nh t\u00ecnh tr\u1ea1ng k\u00edch th\u00edch qu\u00e1 m\u1ee9c \u0111\u1ed9t ng\u1ed9t.<\/p>\n<p>Thanh thi\u1ebfu ni\u00ean trong \u0111\u1ed9 tu\u1ed5i t\u1eeb 12 \u0111\u1ebfn 18 n\u00ean gi\u1edbi h\u1ea1n l\u01b0\u1ee3ng caffeine \u1edf m\u1ee9c d\u01b0\u1edbi <strong>100mg<\/strong> m\u1ed7i ng\u00e0y. \u0110\u1ed1i v\u1edbi tr\u1ebb em d\u01b0\u1edbi 12 tu\u1ed5i, c\u00e1c chuy\u00ean gia khuy\u1ebfn ngh\u1ecb tr\u00e1nh ho\u00e0n to\u00e0n vi\u1ec7c s\u1eed d\u1ee5ng caffeine \u0111\u1ec3 b\u1ea3o v\u1ec7 qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n t\u1ef1 nhi\u00ean c\u1ee7a n\u00e3o b\u1ed9.<\/p>\n<h3>6.2. Quy t\u1eafc th\u1eddi \u0111i\u1ec3m v\u00e0ng \u0111\u1ec3 s\u1eed d\u1ee5ng<\/h3>\n<p>Nhi\u1ec1u ng\u01b0\u1eddi c\u00f3 th\u00f3i quen u\u1ed1ng c\u00e0 ph\u00ea ngay sau khi th\u1ee9c d\u1eady, nh\u01b0ng \u0111\u00e2y ch\u01b0a h\u1eb3n l\u00e0 th\u1eddi \u0111i\u1ec3m t\u1ed1t nh\u1ea5t. Trong 1 \u0111\u1ebfn 2 ti\u1ebfng \u0111\u1ea7u ti\u00ean sau khi ng\u1ee7 d\u1eady, c\u01a1 th\u1ec3 t\u1ef1 s\u1ea3n sinh hormone Cortisol \u0111\u1ec3 gi\u00fap b\u1ea1n t\u1ec9nh t\u00e1o t\u1ef1 nhi\u00ean. Vi\u1ec7c n\u1ea1p caffeine qu\u00e1 s\u1edbm c\u00f3 th\u1ec3 l\u00e0m gi\u00e1n \u0111o\u1ea1n qu\u00e1 tr\u00ecnh n\u00e0y v\u00e0 khi\u1ebfn c\u01a1 th\u1ec3 nhanh ch\u00f3ng b\u1ecb l\u1eddn ho\u1ea1t ch\u1ea5t. Th\u1eddi \u0111i\u1ec3m l\u00fd t\u01b0\u1edfng \u0111\u1ec3 b\u1eaft \u0111\u1ea7u ly c\u00e0 ph\u00ea \u0111\u1ea7u ti\u00ean l\u00e0 t\u1eeb 9 gi\u1edd \u0111\u1ebfn 11 gi\u1edd s\u00e1ng.<\/p>\n<p>\u0110\u1ec3 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn gi\u1ea5c ng\u1ee7, b\u1ea1n n\u00ean tu\u00e2n th\u1ee7 quy t\u1eafc &#8220;ng\u1eebng caffeine tr\u01b0\u1edbc 8 ti\u1ebfng&#8221;. N\u1ebfu b\u1ea1n d\u1ef1 \u0111\u1ecbnh \u0111i ng\u1ee7 v\u00e0o l\u00fac 10 gi\u1edd t\u1ed1i, h\u00e3y u\u1ed1ng t\u00e1ch c\u00e0 ph\u00ea cu\u1ed1i c\u00f9ng tr\u01b0\u1edbc 2 gi\u1edd chi\u1ec1u. Kho\u1ea3ng th\u1eddi gian n\u00e0y \u0111\u1ee7 \u0111\u1ec3 c\u01a1 th\u1ec3 chuy\u1ec3n h\u00f3a v\u00e0 \u0111\u00e0o th\u1ea3i ph\u1ea7n l\u1edbn l\u01b0\u1ee3ng caffeine, gi\u00fap h\u1ec7 th\u1ea7n kinh c\u00f3 th\u1eddi gian th\u01b0 gi\u00e3n tr\u01b0\u1edbc khi b\u01b0\u1edbc v\u00e0o tr\u1ea1ng th\u00e1i ngh\u1ec9 ng\u01a1i.<\/p>\n<h2>7. B\u1ea3ng so s\u00e1nh h\u00e0m l\u01b0\u1ee3ng Caffeine trong c\u00e1c \u0111\u1ed3 u\u1ed1ng ph\u1ed5 bi\u1ebfn<\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3ng th\u1ed1ng k\u00ea h\u00e0m l\u01b0\u1ee3ng caffeine trung b\u00ecnh trong c\u00e1c lo\u1ea1i \u0111\u1ed3 u\u1ed1ng th\u00f4ng d\u1ee5ng \u0111\u1ec3 b\u1ea1n d\u1ec5 d\u00e0ng ki\u1ec3m so\u00e1t l\u01b0\u1ee3ng ti\u00eau th\u1ee5 h\u00e0ng ng\u00e0y. L\u01b0u \u00fd r\u1eb1ng c\u00e1c con s\u1ed1 n\u00e0y c\u00f3 th\u1ec3 thay \u0111\u1ed5i t\u00f9y thu\u1ed9c v\u00e0o c\u00e1ch pha ch\u1ebf v\u00e0 th\u01b0\u01a1ng hi\u1ec7u s\u1ea3n ph\u1ea9m.<\/p>\n<table>\n<thead>\n<tr>\n<th>Lo\u1ea1i \u0111\u1ed3 u\u1ed1ng<\/th>\n<th>Dung t\u00edch ti\u00eau chu\u1ea9n<\/th>\n<th>H\u00e0m l\u01b0\u1ee3ng Caffeine trung b\u00ecnh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>C\u00e0 ph\u00ea phin Vi\u1ec7t Nam<\/td>\n<td>100ml<\/td>\n<td>80mg &#8211; 150mg<\/td>\n<\/tr>\n<tr>\n<td>C\u00e0 ph\u00ea Espresso<\/td>\n<td>30ml (1 shot)<\/td>\n<td>60mg &#8211; 75mg<\/td>\n<\/tr>\n<tr>\n<td>C\u00e0 ph\u00ea h\u00f2a tan<\/td>\n<td>150ml (1 g\u00f3i)<\/td>\n<td>30mg &#8211; 90mg<\/td>\n<\/tr>\n<tr>\n<td>Tr\u00e0 \u0111en (h\u1ed3ng tr\u00e0)<\/td>\n<td>200ml<\/td>\n<td>40mg &#8211; 70mg<\/td>\n<\/tr>\n<tr>\n<td>Tr\u00e0 xanh<\/td>\n<td>200ml<\/td>\n<td>20mg &#8211; 45mg<\/td>\n<\/tr>\n<tr>\n<td>N\u01b0\u1edbc t\u0103ng l\u1ef1c<\/td>\n<td>250ml (1 lon)<\/td>\n<td>70mg &#8211; 100mg<\/td>\n<\/tr>\n<tr>\n<td>N\u01b0\u1edbc ng\u1ecdt c\u00f3 gas (Cola)<\/td>\n<td>330ml (1 lon)<\/td>\n<td>30mg &#8211; 40mg<\/td>\n<\/tr>\n<tr>\n<td>Chocolate \u0111en<\/td>\n<td>30g<\/td>\n<td>20mg &#8211; 25mg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>8. C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 Caffeine<\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 th\u1eafc m\u1eafc ph\u1ed5 bi\u1ebfn c\u1ee7a ng\u01b0\u1eddi d\u00f9ng trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng c\u00e1c s\u1ea3n ph\u1ea9m ch\u1ee9a ho\u1ea1t ch\u1ea5t n\u00e0y. Vi\u1ec7c hi\u1ec3u \u0111\u00fang b\u1ea3n ch\u1ea5t s\u1ebd gi\u00fap b\u1ea1n c\u00f3 c\u00e1i nh\u00ecn kh\u00e1ch quan h\u01a1n.<\/p>\n<h3>8.1. Caffeine c\u00f3 g\u00e2y nghi\u1ec7n kh\u00f4ng?<\/h3>\n<p>V\u1ec1 m\u1eb7t chuy\u00ean m\u00f4n, caffeine kh\u00f4ng g\u00e2y nghi\u1ec7n theo c\u00e1ch c\u1ee7a c\u00e1c ch\u1ea5t k\u00edch th\u00edch m\u1ea1nh nh\u01b0ng c\u00f3 th\u1ec3 g\u00e2y ra t\u00ecnh tr\u1ea1ng l\u1ec7 thu\u1ed9c nh\u1eb9. Khi b\u1ea1n s\u1eed d\u1ee5ng caffeine h\u00e0ng ng\u00e0y trong m\u1ed9t th\u1eddi gian d\u00e0i, n\u00e3o b\u1ed9 s\u1ebd \u0111i\u1ec1u ch\u1ec9nh c\u00e1c th\u1ee5 th\u1ec3 th\u1ea7n kinh \u0111\u1ec3 th\u00edch nghi. N\u1ebfu \u0111\u1ed9t ng\u1ed9t ng\u1eebng s\u1eed d\u1ee5ng, b\u1ea1n c\u00f3 th\u1ec3 g\u1eb7p c\u00e1c tri\u1ec7u ch\u1ee9ng &#8220;cai caffeine&#8221; nh\u01b0 \u0111au \u0111\u1ea7u, m\u1ec7t m\u1ecfi, kh\u00f3 t\u1eadp trung v\u00e0 d\u1ec5 c\u00e1u g\u1eaft. Nh\u1eefng d\u1ea5u hi\u1ec7u n\u00e0y th\u01b0\u1eddng ch\u1ec9 k\u00e9o d\u00e0i t\u1eeb 1 \u0111\u1ebfn 2 ng\u00e0y v\u00e0 s\u1ebd bi\u1ebfn m\u1ea5t khi c\u01a1 th\u1ec3 t\u1ef1 c\u00e2n b\u1eb1ng l\u1ea1i.<\/p>\n<h3>8.2. T\u1ea1i sao u\u1ed1ng c\u00e0 ph\u00ea v\u1eabn th\u1ea5y bu\u1ed3n ng\u1ee7?<\/h3>\n<p>Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y th\u01b0\u1eddng x\u1ea3y ra do m\u1ed9t v\u00e0i nguy\u00ean nh\u00e2n ch\u00ednh. Th\u1ee9 nh\u1ea5t, c\u00f3 th\u1ec3 Adenosine \u0111\u00e3 l\u1ea5p \u0111\u1ea7y c\u00e1c th\u1ee5 th\u1ec3 th\u1ea7n kinh t\u1eeb tr\u01b0\u1edbc khi b\u1ea1n u\u1ed1ng c\u00e0 ph\u00ea, khi\u1ebfn ho\u1ea1t ch\u1ea5t kh\u00f4ng c\u00f2n ch\u1ed7 \u0111\u1ec3 g\u1eafn v\u00e0o. Th\u1ee9 hai, c\u01a1 \u0111\u1ecba c\u1ee7a m\u1ed9t s\u1ed1 ng\u01b0\u1eddi c\u00f3 kh\u1ea3 n\u0103ng chuy\u1ec3n h\u00f3a caffeine c\u1ef1c nhanh, khi\u1ebfn t\u00e1c d\u1ee5ng c\u1ee7a ho\u1ea1t ch\u1ea5t tr\u00f4i qua qu\u00e1 s\u1edbm. Ngo\u00e0i ra, vi\u1ec7c thi\u1ebfu ng\u1ee7 tr\u1ea7m tr\u1ecdng khi\u1ebfn n\u00e3o b\u1ed9 ki\u1ec7t s\u1ee9c \u0111\u1ebfn m\u1ee9c ngay c\u1ea3 ch\u1ea5t k\u00edch th\u00edch c\u0169ng kh\u00f4ng th\u1ec3 ng\u0103n ch\u1eb7n \u0111\u01b0\u1ee3c t\u00edn hi\u1ec7u ngh\u1ec9 ng\u01a1i c\u1ee7a c\u01a1 th\u1ec3.<\/p>\n<h3>8.3. Caffeine c\u00f3 l\u00e0m m\u1ea5t canxi kh\u00f4ng?<\/h3>\n<p>Caffeine c\u00f3 t\u00e1c d\u1ee5ng l\u1ee3i ti\u1ec3u nh\u1eb9 v\u00e0 c\u00f3 th\u1ec3 l\u00e0m t\u0103ng b\u00e0i ti\u1ebft canxi qua n\u01b0\u1edbc ti\u1ec3u. Tuy nhi\u00ean, c\u00e1c nghi\u00ean c\u1ee9u y khoa cho th\u1ea5y l\u01b0\u1ee3ng canxi b\u1ecb th\u1ea5t tho\u00e1t n\u00e0y l\u00e0 r\u1ea5t nh\u1ecf v\u00e0 kh\u00f4ng g\u00e2y \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn s\u1ee9c kh\u1ecfe x\u01b0\u01a1ng kh\u1edbp n\u1ebfu ng\u01b0\u1eddi d\u00f9ng c\u00f3 ch\u1ebf \u0111\u1ed9 \u0103n u\u1ed1ng \u0111\u1ea7y \u0111\u1ee7 ch\u1ea5t dinh d\u01b0\u1ee1ng. \u0110\u1ec3 b\u00f9 \u0111\u1eafp l\u01b0\u1ee3ng canxi n\u00e0y, b\u1ea1n ch\u1ec9 c\u1ea7n b\u1ed5 sung th\u00eam kho\u1ea3ng 1 \u0111\u1ebfn 2 mu\u1ed7ng s\u1eefa v\u00e0o t\u00e1ch c\u00e0 ph\u00ea ho\u1eb7c duy tr\u00ec vi\u1ec7c u\u1ed1ng s\u1eefa m\u1ed7i ng\u00e0y.<\/p>\n<h2>9. Mua s\u1ea3n ph\u1ea9m tr\u00e0 v\u00e0 c\u00e0 ph\u00ea ch\u00ednh h\u00e3ng, gi\u00e1 t\u1ed1t t\u1ea1i Tiki<\/h2>\n<p>Tiki.vn l\u00e0 n\u1ec1n t\u1ea3ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed uy t\u00edn h\u00e0ng \u0111\u1ea7u Vi\u1ec7t Nam, cung c\u1ea5p gi\u1ea3i ph\u00e1p mua s\u1eafm ch\u00ednh h\u00e3ng v\u00e0 ti\u1ec7n l\u1ee3i cho m\u1ecdi gia \u0111\u00ecnh. T\u1ea1i \u0111\u00e2y, b\u1ea1n c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng t\u00ecm ki\u1ebfm c\u00e1c lo\u1ea1i c\u00e0 ph\u00ea h\u1ea1t, c\u00e0 ph\u00ea b\u1ed9t nguy\u00ean ch\u1ea5t hay c\u00e1c lo\u1ea1i tr\u00e0 th\u01b0\u1ee3ng h\u1ea1ng t\u1eeb nh\u1eefng th\u01b0\u01a1ng hi\u1ec7u danh ti\u1ebfng. Ngo\u00e0i ra, Tiki c\u00f2n cung c\u1ea5p danh m\u1ee5c s\u1ea3n ph\u1ea9m thi\u1ebft y\u1ebfu \u0111a d\u1ea1ng, t\u1eeb th\u1ef1c ph\u1ea9m \u0111\u00f3ng h\u1ed9p, gia v\u1ecb \u0111\u1ebfn c\u00e1c lo\u1ea1i \u0111\u1ed3 u\u1ed1ng v\u00e0 s\u1eefa ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n<p>\u0110\u1eb7c bi\u1ec7t, v\u1edbi ch\u00ednh s\u00e1ch giao h\u00e0ng si\u00eau t\u1ed1c c\u00f9ng ch\u01b0\u01a1ng tr\u00ecnh freeship th\u01b0\u1eddng xuy\u00ean, Tiki \u0111\u1ea3m b\u1ea3o h\u00e0ng h\u00f3a lu\u00f4n \u0111\u01b0\u1ee3c v\u1eadn chuy\u1ec3n nhanh ch\u00f3ng, gi\u00fap b\u1ea1n ti\u1ebft ki\u1ec7m t\u1ed1i \u0111a th\u1eddi gian m\u00e0 v\u1eabn ho\u00e0n to\u00e0n y\u00ean t\u00e2m v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m. <\/p>\n<p>Truy c\u1eadp B\u00e1ch H\u00f3a Online Tiki [<a href=\"https:\/\/tiki.vn\/bach-hoa-online\/c4384%5D\">https:\/\/tiki.vn\/bach-hoa-online\/c4384]<\/a> ngay h\u00f4m nay \u0111\u1ec3 t\u1eadn h\u01b0\u1edfng tr\u1ea3i nghi\u1ec7m mua s\u1eafm ch\u1ea5t l\u01b0\u1ee3ng v\u1edbi gi\u00e1 \u01b0u \u0111\u00e3i nh\u1ea5t cho c\u00e1c d\u00f2ng s\u1ea3n ph\u1ea9m \u0111\u1ed3 u\u1ed1ng [<a href=\"https:\/\/tiki.vn\/do-uong\/c22998%5D\">https:\/\/tiki.vn\/do-uong\/c22998]<\/a> ch\u1ee9a caffeine an to\u00e0n cho s\u1ee9c kh\u1ecfe.<\/p>\n<h2>10. K\u1ebft lu\u1eadn<\/h2>\n<p>Caffeine l\u00e0 m\u1ed9t ho\u1ea1t ch\u1ea5t h\u1ed7 tr\u1ee3 tuy\u1ec7t v\u1eddi cho s\u1ef1 t\u1ec9nh t\u00e1o v\u00e0 hi\u1ec7u su\u1ea5t c\u00f4ng vi\u1ec7c n\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111i\u1ec1u \u0111\u1ed9. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng, li\u1ec1u l\u01b0\u1ee3ng an to\u00e0n v\u00e0 l\u1eafng nghe ph\u1ea3n \u1ee9ng c\u1ee7a c\u01a1 th\u1ec3 s\u1ebd gi\u00fap b\u1ea1n khai th\u00e1c t\u1ed1t c\u00e1c l\u1ee3i \u00edch c\u1ee7a ho\u1ea1t ch\u1ea5t n\u00e0y. H\u00e3y duy tr\u00ec th\u00f3i quen ti\u00eau th\u1ee5 caffeine th\u00f4ng minh \u0111\u1ec3 b\u1ea3o v\u1ec7 s\u1ee9c kh\u1ecfe l\u00e2u d\u00e0i.<\/p>\n<h2>C\u00e2u H\u1ecfi Th\u01b0\u1eddng G\u1eb7p<\/h2>\n<h3>Caffeine c\u00f3 t\u00e1c d\u1ee5ng trong bao l\u00e2u?<\/h3>\n<p>Caffeine th\u01b0\u1eddng c\u00f3 th\u1eddi gian b\u00e1n h\u1ee7y kho\u1ea3ng 4-6 ti\u1ebfng trong c\u01a1 th\u1ec3, ngh\u0129a l\u00e0 sau kho\u1ea3ng th\u1eddi gian n\u00e0y, l\u01b0\u1ee3ng caffeine c\u00f2n l\u1ea1i trong m\u00e1u gi\u1ea3m \u0111i m\u1ed9t n\u1eeda. Tuy nhi\u00ean, th\u1eddi gian n\u00e0y c\u00f3 th\u1ec3 thay \u0111\u1ed5i t\u00f9y thu\u1ed9c v\u00e0o c\u01a1 \u0111\u1ecba m\u1ed7i ng\u01b0\u1eddi.<\/p>\n<h3>U\u1ed1ng bao nhi\u00eau caffeine l\u00e0 qu\u00e1 nhi\u1ec1u?<\/h3>\n<p>\u0110\u1ed1i v\u1edbi ng\u01b0\u1eddi tr\u01b0\u1edfng th\u00e0nh kh\u1ecfe m\u1ea1nh, l\u01b0\u1ee3ng caffeine an to\u00e0n h\u00e0ng ng\u00e0y l\u00e0 d\u01b0\u1edbi 400mg. Ti\u00eau th\u1ee5 v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra c\u00e1c t\u00e1c d\u1ee5ng ph\u1ee5 kh\u00f4ng mong mu\u1ed1n nh\u01b0 lo l\u1eafng, m\u1ea5t ng\u1ee7 ho\u1eb7c tim \u0111\u1eadp nhanh.<\/p>\n<h3>Caffeine c\u00f3 trong th\u1ef1c ph\u1ea9m n\u00e0o ngo\u00e0i c\u00e0 ph\u00ea?<\/h3>\n<p>Ngo\u00e0i c\u00e0 ph\u00ea, caffeine c\u00f2n c\u00f3 trong l\u00e1 tr\u00e0 (tr\u00e0 xanh, tr\u00e0 \u0111en), h\u1ea1t cacao (chocolate), h\u1ea1t Guarana, l\u00e1 Yerba Mate, m\u1ed9t s\u1ed1 lo\u1ea1i n\u01b0\u1edbc ng\u1ecdt c\u00f3 gas v\u00e0 c\u1ea3 trong c\u00e1c lo\u1ea1i thu\u1ed1c gi\u1ea3m \u0111au kh\u00f4ng k\u00ea \u0111\u01a1n.<\/p>\n<h3>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u00e0o th\u1ea3i caffeine nhanh h\u01a1n?<\/h3>\n<p>\u0110\u1ec3 gi\u1ea3m b\u1edbt t\u00e1c d\u1ee5ng c\u1ee7a caffeine, b\u1ea1n c\u00f3 th\u1ec3 u\u1ed1ng nhi\u1ec1u n\u01b0\u1edbc \u0111\u1ec3 gi\u00fap c\u01a1 th\u1ec3 \u0111\u00e0o th\u1ea3i nhanh h\u01a1n, tr\u00e1nh c\u00e1c th\u1ef1c ph\u1ea9m v\u00e0 \u0111\u1ed3 u\u1ed1ng ch\u1ee9a caffeine kh\u00e1c, v\u00e0 t\u1eadp th\u1ec3 d\u1ee5c nh\u1eb9 nh\u00e0ng \u0111\u1ec3 gi\u1ea3m b\u1edbt c\u1ea3m gi\u00e1c b\u1ed3n ch\u1ed3n.<\/p>\n<h3>Caffeine c\u00f3 g\u00e2y nghi\u1ec7n kh\u00f4ng?<\/h3>\n<p>Caffeine c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 l\u1ec7 thu\u1ed9c nh\u1eb9. Khi ng\u1eebng s\u1eed d\u1ee5ng \u0111\u1ed9t ng\u1ed9t, m\u1ed9t s\u1ed1 ng\u01b0\u1eddi c\u00f3 th\u1ec3 g\u1eb7p c\u00e1c tri\u1ec7u ch\u1ee9ng nh\u01b0 \u0111au \u0111\u1ea7u, m\u1ec7t m\u1ecfi ho\u1eb7c kh\u00f3 ch\u1ecbu, th\u01b0\u1eddng k\u00e9o d\u00e0i trong 1-2 ng\u00e0y.<\/p>\n<h3>T\u1ea1i sao u\u1ed1ng c\u00e0 ph\u00ea v\u1eabn th\u1ea5y bu\u1ed3n ng\u1ee7?<\/h3>\n<p>\u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 x\u1ea3y ra n\u1ebfu th\u1ee5 th\u1ec3 Adenosine trong n\u00e3o \u0111\u00e3 b\u1ecb l\u1ea5p \u0111\u1ea7y b\u1edfi Caffeine tr\u01b0\u1edbc \u0111\u00f3, ho\u1eb7c do c\u01a1 \u0111\u1ecba chuy\u1ec3n h\u00f3a Caffeine qu\u00e1 nhanh, ho\u1eb7c do t\u00ecnh tr\u1ea1ng thi\u1ebfu ng\u1ee7 tr\u1ea7m tr\u1ecdng khi\u1ebfn Caffeine kh\u00f4ng \u0111\u1ee7 s\u1ee9c b\u00f9 \u0111\u1eafp.<\/p>\n<h3>Caffeine c\u00f3 l\u00e0m m\u1ea5t canxi kh\u00f4ng?<\/h3>\n<p>Caffeine c\u00f3 th\u1ec3 l\u00e0m t\u0103ng nh\u1eb9 vi\u1ec7c b\u00e0i ti\u1ebft canxi qua n\u01b0\u1edbc ti\u1ec3u, nh\u01b0ng \u1ea3nh h\u01b0\u1edfng n\u00e0y th\u01b0\u1eddng kh\u00f4ng \u0111\u00e1ng k\u1ec3 v\u00e0 kh\u00f4ng g\u00e2y lo\u00e3ng x\u01b0\u01a1ng n\u1ebfu b\u1ea1n c\u00f3 ch\u1ebf \u0111\u1ed9 \u0103n u\u1ed1ng c\u00e2n \u0111\u1ed1i, \u0111\u1ee7 canxi.<\/p>\n<h3>Caffeine c\u00f3 t\u00e1c d\u1ee5ng trong bao l\u00e2u?<\/h3>\n<p>Caffeine th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u c\u00f3 t\u00e1c d\u1ee5ng trong v\u00f2ng 20-30 ph\u00fat sau khi ti\u00eau th\u1ee5 v\u00e0 k\u00e9o d\u00e0i hi\u1ec7u qu\u1ea3 trong kho\u1ea3ng 4-6 gi\u1edd, t\u00f9y thu\u1ed9c v\u00e0o c\u01a1 \u0111\u1ecba v\u00e0 c\u00e1ch c\u01a1 th\u1ec3 chuy\u1ec3n h\u00f3a.<\/p>\n<h3>U\u1ed1ng bao nhi\u00eau caffeine l\u00e0 an to\u00e0n cho ng\u01b0\u1eddi l\u1edbn?<\/h3>\n<p>Khuy\u1ebfn ngh\u1ecb chung cho ng\u01b0\u1eddi tr\u01b0\u1edfng th\u00e0nh kh\u1ecfe m\u1ea1nh l\u00e0 kh\u00f4ng qu\u00e1 400mg caffeine m\u1ed7i ng\u00e0y, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng kho\u1ea3ng 4 t\u00e1ch c\u00e0 ph\u00ea pha phin. Tuy nhi\u00ean, m\u1ee9c \u0111\u1ed9 nh\u1ea1y c\u1ea3m c\u1ee7a m\u1ed7i ng\u01b0\u1eddi l\u00e0 kh\u00e1c nhau.<\/p>\n<h3>Caffeine c\u00f3 trong th\u1ef1c ph\u1ea9m n\u00e0o ngo\u00e0i c\u00e0 ph\u00ea?<\/h3>\n<p>Caffeine c\u00f3 t\u1ef1 nhi\u00ean trong l\u00e1 tr\u00e0, h\u1ea1t ca cao (d\u00f9ng l\u00e0m s\u00f4 c\u00f4 la), h\u1ea1t Guarana v\u00e0 l\u00e1 Yerba Mate. N\u00f3 c\u0169ng \u0111\u01b0\u1ee3c th\u00eam v\u00e0o nhi\u1ec1u lo\u1ea1i n\u01b0\u1edbc gi\u1ea3i kh\u00e1t v\u00e0 m\u1ed9t s\u1ed1 lo\u1ea1i thu\u1ed1c.<\/p>\n<h3>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 gi\u1ea3m t\u00e1c d\u1ee5ng ph\u1ee5 c\u1ee7a caffeine?<\/h3>\n<p>\u0110\u1ec3 gi\u1ea3m t\u00e1c d\u1ee5ng ph\u1ee5 nh\u01b0 b\u1ed3n ch\u1ed3n ho\u1eb7c m\u1ea5t ng\u1ee7, h\u00e3y u\u1ed1ng nhi\u1ec1u n\u01b0\u1edbc, tr\u00e1nh d\u00f9ng caffeine v\u00e0o bu\u1ed5i chi\u1ec1u t\u1ed1i v\u00e0 c\u00e2n nh\u1eafc gi\u1ea3m li\u1ec1u l\u01b0\u1ee3ng ho\u1eb7c t\u1ea7n su\u1ea5t s\u1eed d\u1ee5ng.<\/p>\n<h3>Ph\u1ee5 n\u1eef mang thai c\u00f3 n\u00ean u\u1ed1ng caffeine kh\u00f4ng?<\/h3>\n<p>Ph\u1ee5 n\u1eef mang thai n\u00ean h\u1ea1n ch\u1ebf l\u01b0\u1ee3ng caffeine ti\u00eau th\u1ee5 d\u01b0\u1edbi 200mg m\u1ed7i ng\u00e0y do caffeine c\u00f3 th\u1ec3 v\u01b0\u1ee3t qua nhau thai v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn thai nhi.<\/p>\n<h3>Caffeine c\u00f3 gi\u00fap gi\u1ea3m c\u00e2n kh\u00f4ng?<\/h3>\n<p>Caffeine c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i ch\u1ea5t v\u00e0 t\u0103ng c\u01b0\u1eddng \u0111\u1ed1t ch\u00e1y ch\u1ea5t b\u00e9o, g\u00f3p ph\u1ea7n v\u00e0o vi\u1ec7c gi\u1ea3m c\u00e2n, nh\u01b0ng hi\u1ec7u qu\u1ea3 s\u1ebd r\u00f5 r\u1ec7t h\u01a1n khi k\u1ebft h\u1ee3p v\u1edbi ch\u1ebf \u0111\u1ed9 \u0103n u\u1ed1ng c\u00e2n b\u1eb1ng v\u00e0 t\u1eadp luy\u1ec7n.<\/p>\n<h3>U\u1ed1ng c\u00e0 ph\u00ea v\u00e0o th\u1eddi \u0111i\u1ec3m n\u00e0o l\u00e0 t\u1ed1t nh\u1ea5t?<\/h3>\n<p>Th\u1eddi \u0111i\u1ec3m t\u1ed1t nh\u1ea5t \u0111\u1ec3 u\u1ed1ng c\u00e0 ph\u00ea l\u00e0 kho\u1ea3ng 1-2 gi\u1edd sau khi th\u1ee9c d\u1eady, khi m\u1ee9c cortisol t\u1ef1 nhi\u00ean c\u1ee7a c\u01a1 th\u1ec3 b\u1eaft \u0111\u1ea7u gi\u1ea3m, gi\u00fap b\u1ea1n t\u1ec9nh t\u00e1o m\u00e0 kh\u00f4ng b\u1ecb ph\u1ee5 thu\u1ed9c qu\u00e1 s\u1edbm.<\/p>\n<h3>N\u00ean ng\u1eebng u\u1ed1ng caffeine v\u00e0o l\u00fac n\u00e0o trong ng\u00e0y?<\/h3>\n<p>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o gi\u1ea5c ng\u1ee7 ngon, b\u1ea1n n\u00ean ng\u1eebng ti\u00eau th\u1ee5 caffeine \u00edt nh\u1ea5t 8 gi\u1edd tr\u01b0\u1edbc khi \u0111i ng\u1ee7, \u0111\u1ec3 c\u01a1 th\u1ec3 c\u00f3 th\u1eddi gian chuy\u1ec3n h\u00f3a v\u00e0 lo\u1ea1i b\u1ecf ho\u1ea1t ch\u1ea5t n\u00e0y.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Caffeine l\u00e0 ho\u1ea1t ch\u1ea5t quen thu\u1ed9c gi\u00fap duy tr\u00ec s\u1ef1 t\u1ec9nh t\u00e1o v\u00e0 t\u1eadp trung, xu\u1ea5t hi\u1ec7n ph\u1ed5 bi\u1ebfn trong c\u00e0 ph\u00ea, tr\u00e0 v\u00e0 nhi\u1ec1u lo\u1ea1i \u0111\u1ed3 u\u1ed1ng n\u0103ng l\u01b0\u1ee3ng. Tuy nhi\u00ean, kh\u00f4ng ph\u1ea3i ai c\u0169ng hi\u1ec3u r\u00f5 b\u1ea3n ch\u1ea5t Caffeine l\u00e0 g\u00ec, c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng ra sao v\u00e0 li\u1ec1u l\u01b0\u1ee3ng bao nhi\u00eau l\u00e0 [&hellip;]<\/p>\n","protected":false},"author":26,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1028],"tags":[],"class_list":{"0":"post-103765","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-vao-bep"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v19.7 (Yoast SEO v20.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Caffeine l\u00e0 g\u00ec? Caffeine t\u1ed1t hay x\u1ea5u cho s\u1ee9c kho\u1ebb? | TIKI<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tiki.vn\/blog\/caffeine-la-gi-2\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Caffeine l\u00e0 g\u00ec? Caffeine t\u1ed1t hay x\u1ea5u cho s\u1ee9c kho\u1ebb?\" \/>\n<meta property=\"og:description\" content=\"Caffeine l\u00e0 ho\u1ea1t ch\u1ea5t quen thu\u1ed9c gi\u00fap duy tr\u00ec s\u1ef1 t\u1ec9nh t\u00e1o v\u00e0 t\u1eadp trung, xu\u1ea5t hi\u1ec7n ph\u1ed5 bi\u1ebfn trong c\u00e0 ph\u00ea, tr\u00e0 v\u00e0 nhi\u1ec1u lo\u1ea1i \u0111\u1ed3 u\u1ed1ng n\u0103ng l\u01b0\u1ee3ng. Tuy nhi\u00ean, kh\u00f4ng ph\u1ea3i ai c\u0169ng hi\u1ec3u r\u00f5 b\u1ea3n ch\u1ea5t Caffeine l\u00e0 g\u00ec, c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng ra sao v\u00e0 li\u1ec1u l\u01b0\u1ee3ng bao nhi\u00eau l\u00e0 [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/tiki.vn\/blog\/caffeine-la-gi-2\/\" \/>\n<meta property=\"og:site_name\" content=\"TIKI\" \/>\n<meta property=\"article:published_time\" content=\"2026-05-18T16:28:36+00:00\" \/>\n<meta name=\"author\" content=\"Nguyen Vy\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nguyen Vy\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"32 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/tiki.vn\/blog\/caffeine-la-gi-2\/\",\"url\":\"https:\/\/tiki.vn\/blog\/caffeine-la-gi-2\/\",\"name\":\"Caffeine l\u00e0 g\u00ec? Caffeine t\u1ed1t hay x\u1ea5u cho s\u1ee9c kho\u1ebb? | TIKI\",\"isPartOf\":{\"@id\":\"https:\/\/tiki.vn\/blog\/#website\"},\"datePublished\":\"2026-05-18T16:28:36+00:00\",\"dateModified\":\"2026-05-18T16:28:36+00:00\",\"author\":{\"@id\":\"https:\/\/tiki.vn\/blog\/#\/schema\/person\/55cee1bbf6c1e221b3096d98d5c18321\"},\"breadcrumb\":{\"@id\":\"https:\/\/tiki.vn\/blog\/caffeine-la-gi-2\/#breadcrumb\"},\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/tiki.vn\/blog\/caffeine-la-gi-2\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/tiki.vn\/blog\/caffeine-la-gi-2\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Trang ch\u1ee7\",\"item\":\"https:\/\/tiki.vn\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Review S\u1ea3n Ph\u1ea9m\",\"item\":\"https:\/\/tiki.vn\/blog\/review-san-pham\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Review S\u00e1ch Hay\",\"item\":\"https:\/\/tiki.vn\/blog\/review-san-pham\/review-sach\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Caffeine l\u00e0 g\u00ec? Caffeine t\u1ed1t hay x\u1ea5u cho s\u1ee9c kho\u1ebb?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/tiki.vn\/blog\/#website\",\"url\":\"https:\/\/tiki.vn\/blog\/\",\"name\":\"Tiki\",\"description\":\"T\u00ecm Ki\u1ebfm - Ti\u1ebft Ki\u1ec7m\",\"alternateName\":\"Tiki\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/tiki.vn\/blog\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"vi\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/tiki.vn\/blog\/#\/schema\/person\/55cee1bbf6c1e221b3096d98d5c18321\",\"name\":\"Nguyen Vy\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\/\/tiki.vn\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/b9c75b605a00063af4c269117451f9c040fdcccd34e9baa570bab4057940711a?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/b9c75b605a00063af4c269117451f9c040fdcccd34e9baa570bab4057940711a?s=96&d=mm&r=g\",\"caption\":\"Nguyen Vy\"},\"url\":\"https:\/\/tiki.vn\/blog\/author\/vynt1811\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Caffeine l\u00e0 g\u00ec? Caffeine t\u1ed1t hay x\u1ea5u cho s\u1ee9c kho\u1ebb? | TIKI","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/tiki.vn\/blog\/caffeine-la-gi-2\/","og_locale":"vi_VN","og_type":"article","og_title":"Caffeine l\u00e0 g\u00ec? Caffeine t\u1ed1t hay x\u1ea5u cho s\u1ee9c kho\u1ebb?","og_description":"Caffeine l\u00e0 ho\u1ea1t ch\u1ea5t quen thu\u1ed9c gi\u00fap duy tr\u00ec s\u1ef1 t\u1ec9nh t\u00e1o v\u00e0 t\u1eadp trung, xu\u1ea5t hi\u1ec7n ph\u1ed5 bi\u1ebfn trong c\u00e0 ph\u00ea, tr\u00e0 v\u00e0 nhi\u1ec1u lo\u1ea1i \u0111\u1ed3 u\u1ed1ng n\u0103ng l\u01b0\u1ee3ng. Tuy nhi\u00ean, kh\u00f4ng ph\u1ea3i ai c\u0169ng hi\u1ec3u r\u00f5 b\u1ea3n ch\u1ea5t Caffeine l\u00e0 g\u00ec, c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng ra sao v\u00e0 li\u1ec1u l\u01b0\u1ee3ng bao nhi\u00eau l\u00e0 [&hellip;]","og_url":"https:\/\/tiki.vn\/blog\/caffeine-la-gi-2\/","og_site_name":"TIKI","article_published_time":"2026-05-18T16:28:36+00:00","author":"Nguyen Vy","twitter_card":"summary_large_image","twitter_misc":{"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi":"Nguyen Vy","\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc":"32 ph\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/tiki.vn\/blog\/caffeine-la-gi-2\/","url":"https:\/\/tiki.vn\/blog\/caffeine-la-gi-2\/","name":"Caffeine l\u00e0 g\u00ec? Caffeine t\u1ed1t hay x\u1ea5u cho s\u1ee9c kho\u1ebb? | TIKI","isPartOf":{"@id":"https:\/\/tiki.vn\/blog\/#website"},"datePublished":"2026-05-18T16:28:36+00:00","dateModified":"2026-05-18T16:28:36+00:00","author":{"@id":"https:\/\/tiki.vn\/blog\/#\/schema\/person\/55cee1bbf6c1e221b3096d98d5c18321"},"breadcrumb":{"@id":"https:\/\/tiki.vn\/blog\/caffeine-la-gi-2\/#breadcrumb"},"inLanguage":"vi","potentialAction":[{"@type":"ReadAction","target":["https:\/\/tiki.vn\/blog\/caffeine-la-gi-2\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/tiki.vn\/blog\/caffeine-la-gi-2\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Trang ch\u1ee7","item":"https:\/\/tiki.vn\/blog\/"},{"@type":"ListItem","position":2,"name":"Review S\u1ea3n Ph\u1ea9m","item":"https:\/\/tiki.vn\/blog\/review-san-pham\/"},{"@type":"ListItem","position":3,"name":"Review S\u00e1ch Hay","item":"https:\/\/tiki.vn\/blog\/review-san-pham\/review-sach\/"},{"@type":"ListItem","position":4,"name":"Caffeine l\u00e0 g\u00ec? Caffeine t\u1ed1t hay x\u1ea5u cho s\u1ee9c kho\u1ebb?"}]},{"@type":"WebSite","@id":"https:\/\/tiki.vn\/blog\/#website","url":"https:\/\/tiki.vn\/blog\/","name":"Tiki","description":"T\u00ecm Ki\u1ebfm - Ti\u1ebft Ki\u1ec7m","alternateName":"Tiki","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/tiki.vn\/blog\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"vi"},{"@type":"Person","@id":"https:\/\/tiki.vn\/blog\/#\/schema\/person\/55cee1bbf6c1e221b3096d98d5c18321","name":"Nguyen Vy","image":{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/tiki.vn\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/b9c75b605a00063af4c269117451f9c040fdcccd34e9baa570bab4057940711a?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/b9c75b605a00063af4c269117451f9c040fdcccd34e9baa570bab4057940711a?s=96&d=mm&r=g","caption":"Nguyen Vy"},"url":"https:\/\/tiki.vn\/blog\/author\/vynt1811\/"}]}},"_links":{"self":[{"href":"https:\/\/tiki.vn\/blog\/wp-json\/wp\/v2\/posts\/103765","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tiki.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tiki.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tiki.vn\/blog\/wp-json\/wp\/v2\/users\/26"}],"replies":[{"embeddable":true,"href":"https:\/\/tiki.vn\/blog\/wp-json\/wp\/v2\/comments?post=103765"}],"version-history":[{"count":0,"href":"https:\/\/tiki.vn\/blog\/wp-json\/wp\/v2\/posts\/103765\/revisions"}],"wp:attachment":[{"href":"https:\/\/tiki.vn\/blog\/wp-json\/wp\/v2\/media?parent=103765"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tiki.vn\/blog\/wp-json\/wp\/v2\/categories?post=103765"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tiki.vn\/blog\/wp-json\/wp\/v2\/tags?post=103765"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}