{"id":115262,"date":"2023-09-26T18:00:00","date_gmt":"2023-09-26T11:00:00","guid":{"rendered":"https:\/\/www.docosan.com\/blog\/?p=115262"},"modified":"2024-10-23T15:38:49","modified_gmt":"2024-10-23T08:38:49","slug":"vitamin-a-lieu-cao","status":"publish","type":"post","link":"https:\/\/www.docosan.com\/blog\/dinh-duong\/vitamin-a-lieu-cao\/","title":{"rendered":"D\u00f9ng vitamin A li\u1ec1u cao c\u00f3 nguy hi\u1ec3m kh\u00f4ng? T\u00e1c d\u1ee5ng ph\u1ee5 l\u00e0 g\u00ec?"},"content":{"rendered":"\r\n

Vitamin A l\u00e0 m\u1ed9t lo\u1ea1i vitamin r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi s\u1ee9c kh\u1ecfe con ng\u01b0\u1eddi. Trong ch\u1ee7 \u0111\u1ec1 n\u00e0y, ch\u00fang ta s\u1ebd c\u00f9ng kh\u00e1m ph\u00e1 c\u00f4ng d\u1ee5ng thi\u1ebft y\u1ebfu c\u1ee7a vitamin A, li\u1ec1u l\u01b0\u1ee3ng c\u1ea7n thi\u1ebft v\u00e0 nh\u1eefng c\u1ea3nh b\u00e1o c\u1ea7n thi\u1ebft khi b\u1ed5 sung vitamin A li\u1ec1u cao, gi\u00fap mang \u0111\u1ebfn nh\u1eefng quy\u1ebft \u0111\u1ecbnh \u0111\u00fang \u0111\u1eafn v\u00e0 t\u1ed1t cho s\u1ee9c kh\u1ecfe c\u1ee7a m\u1ed7i ng\u01b0\u1eddi. H\u00e3y c\u00f9ng Doctor c\u00f3 s\u1eb5n<\/a> t\u00ecm hi\u1ec3u \u0111\u1ec3 b\u1ea3o v\u1ec7 v\u00e0 qu\u1ea3n l\u00fd s\u1ee9c kh\u1ecfe m\u1ed9t c\u00e1ch th\u00f4ng th\u00e1i.<\/strong><\/p>\r\n\r\n\r\n\r\n

\"vitamin<\/figure>\r\n\r\n\r\n\r\n

C\u00f4ng d\u1ee5ng c\u1ee7a vitamin A<\/h2>\r\n\r\n\r\n\r\n

Vitamin A l\u00e0 m\u1ed9t d\u1ea1ng vitamin quan tr\u1ecdng v\u00e0 c\u1ea7n thi\u1ebft cho s\u1ef1 ph\u00e1t tri\u1ec3n v\u00e0 duy tr\u00ec s\u1ee9c kh\u1ecfe c\u1ee7a c\u01a1 th\u1ec3. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 c\u00f4ng d\u1ee5ng tuy\u1ec7t v\u1eddi c\u1ee7a vitamin A.<\/p>\r\n\r\n\r\n\r\n

B\u1ea3o v\u1ec7 s\u1ee9c kh\u1ecfe m\u1eaft<\/h3>\r\n\r\n\r\n\r\n

Vitamin A l\u00e0 y\u1ebfu t\u1ed1 c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec th\u1ecb l\u1ef1c t\u1ed1t v\u00e0 gi\u1eef cho m\u1eaft kh\u1ecfe m\u1ea1nh. L\u00fd do ch\u00ednh khi\u1ebfn vitamin A t\u1ed1t cho m\u1eaft l\u00e0 vai tr\u00f2 c\u1ee7a n\u00f3 trong vi\u1ec7c h\u1ed7 tr\u1ee3 ch\u1ee9c n\u0103ng c\u1ee7a v\u00f5ng m\u1ea1c, m\u1ed9t l\u1edbp nh\u1ea1y c\u1ea3m v\u1edbi \u00e1nh s\u00e1ng \u1edf ph\u00eda sau m\u1eaft.<\/p>\r\n\r\n\r\n\r\n

Vitamin A l\u00e0 th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ee7a rhodopsin, m\u1ed9t lo\u1ea1i protein \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong t\u1ebf b\u00e0o que c\u1ee7a v\u00f5ng m\u1ea1c. Rhodopsin \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh th\u1ecb gi\u00e1c, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong \u0111i\u1ec1u ki\u1ec7n \u00e1nh s\u00e1ng y\u1ebfu ho\u1eb7c m\u1edd.<\/p>\r\n\r\n\r\n\r\n

H\u1ed7 tr\u1ee3 h\u1ec7 mi\u1ec5n d\u1ecbch<\/h3>\r\n\r\n\r\n\r\n

Vitamin A gi\u00fap c\u1ee7ng c\u1ed1 h\u1ec7 mi\u1ec5n d\u1ecbch, t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i c\u00e1c b\u1ec7nh l\u00fd v\u00e0 nhi\u1ec5m tr\u00f9ng. N\u00f3 tham gia v\u00e0o qu\u00e1 tr\u00ecnh t\u1ea1o ra t\u1ebf b\u00e0o mi\u1ec5n d\u1ecbch, gi\u00fap b\u1ea3o v\u1ec7 c\u01a1 th\u1ec3 kh\u1ecfi vi khu\u1ea9n v\u00e0 virus.<\/p>\r\n\r\n\r\n\r\n

Vitamin A r\u1ea5t quan tr\u1ecdng cho vi\u1ec7c duy tr\u00ec v\u00e0 s\u1eeda ch\u1eefa c\u00e1c m\u00f4 bi\u1ec3u m\u00f4, t\u1ea1o th\u00e0nh h\u00e0ng r\u00e0o b\u1ea3o v\u1ec7 tr\u00ean da v\u00e0 m\u00e0ng nh\u1ea7y \u1edf \u0111\u01b0\u1eddng h\u00f4 h\u1ea5p, \u0111\u01b0\u1eddng ti\u00eau h\u00f3a v\u00e0 \u0111\u01b0\u1eddng ti\u1ebft ni\u1ec7u. M\u1ed9t h\u00e0ng r\u00e0o bi\u1ec3u m\u00f4 m\u1ea1nh m\u1ebd \u0111\u00f3ng vai tr\u00f2 l\u00e0 tuy\u1ebfn ph\u00f2ng th\u1ee7 \u0111\u1ea7u ti\u00ean ch\u1ed1ng l\u1ea1i m\u1ea7m b\u1ec7nh.<\/p>\r\n\r\n\r\n\r\n

Vitamin A gi\u00fap t\u0103ng c\u01b0\u1eddng ch\u1ee9c n\u0103ng c\u1ee7a c\u00e1c t\u1ebf b\u00e0o b\u1ea1ch c\u1ea7u nh\u01b0 t\u1ebf b\u00e0o lympho v\u00e0 b\u1ea1ch c\u1ea7u trung t\u00ednh, l\u00e0 nh\u1eefng th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ee7a h\u1ec7 th\u1ed1ng mi\u1ec5n d\u1ecbch.<\/p>\r\n\r\n\r\n\r\n

Vitamin A c\u00f2n l\u00e0 m\u1ed9t ch\u1ea5t ch\u1ed1ng oxy h\u00f3a gi\u00fap trung h\u00f2a c\u00e1c g\u1ed1c t\u1ef1 do c\u00f3 h\u1ea1i trong c\u01a1 th\u1ec3..<\/p>\r\n\r\n\r\n\r\n

Th\u00fac \u0111\u1ea9y t\u0103ng tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n<\/h3>\r\n\r\n\r\n\r\n

Vitamin A r\u1ea5t c\u1ea7n thi\u1ebft cho s\u1ef1 t\u0103ng tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n do vai tr\u00f2 quan tr\u1ecdng c\u1ee7a n\u00f3 trong c\u00e1c qu\u00e1 tr\u00ecnh sinh h\u1ecdc kh\u00e1c nhau h\u1ed7 tr\u1ee3 s\u1ef1 t\u0103ng tr\u01b0\u1edfng, bi\u1ec7t h\u00f3a v\u00e0 ph\u00e1t tri\u1ec3n m\u00f4 t\u1ed5ng th\u1ec3 c\u1ee7a t\u1ebf b\u00e0o.<\/p>\r\n\r\n\r\n\r\n

Vitamin A tham gia v\u00e0o s\u1ef1 t\u0103ng tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a x\u01b0\u01a1ng, h\u1ed7 tr\u1ee3 qu\u00e1 tr\u00ecnh bi\u1ec7t h\u00f3a v\u00e0 tr\u01b0\u1edfng th\u00e0nh c\u1ee7a c\u00e1c nguy\u00ean b\u00e0o x\u01b0\u01a1ng, l\u00e0 nh\u1eefng t\u1ebf b\u00e0o ch\u1ecbu tr\u00e1ch nhi\u1ec7m h\u00ecnh th\u00e0nh x\u01b0\u01a1ng. N\u00f3 h\u1ed7 tr\u1ee3 t\u1ed5ng h\u1ee3p protein v\u00e0 enzyme c\u1ea7n thi\u1ebft cho qu\u00e1 tr\u00ecnh kho\u00e1ng h\u00f3a x\u01b0\u01a1ng v\u00e0 ph\u00e1t tri\u1ec3n x\u01b0\u01a1ng.<\/p>\r\n\r\n\r\n\r\n

\"Vitamin\r\n
Vitamin A c\u1ea7n thi\u1ebft cho s\u1ef1 t\u0103ng tr\u01b0\u1edfng v\u00e0 ph\u00e1t tri\u1ec3n to\u00e0n di\u1ec7n<\/figcaption>\r\n<\/figure>\r\n\r\n\r\n\r\n

Quan tr\u1ecdng cho thai k\u1ef3 v\u00e0 ph\u00f4i thai<\/h3>\r\n\r\n\r\n\r\n

Vitamin A c\u1ef1c k\u1ef3 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u1ea3 ph\u1ee5 n\u1eef mang thai v\u00e0 thai nhi \u0111ang ph\u00e1t tri\u1ec3n do vai tr\u00f2 quan tr\u1ecdng c\u1ee7a n\u00f3 trong vi\u1ec7c h\u1ed7 tr\u1ee3 s\u1ef1 t\u0103ng tr\u01b0\u1edfng, ph\u00e1t tri\u1ec3n b\u00ecnh th\u01b0\u1eddng c\u1ee7a ph\u00f4i thai.\u00a0<\/p>\r\n\r\n\r\n\r\n

Vitamin A c\u00f3 li\u00ean quan \u0111\u1ebfn vi\u1ec7c gi\u1ea3m nguy c\u01a1 m\u1eafc m\u1ed9t s\u1ed1 d\u1ecb t\u1eadt b\u1ea9m sinh, \u0111\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng d\u1ecb t\u1eadt li\u00ean quan \u0111\u1ebfn s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a tim, h\u1ec7 th\u1ea7n kinh trung \u01b0\u01a1ng v\u00e0 c\u1ea5u tr\u00fac khu\u00f4n m\u1eb7t.<\/p>\r\n\r\n\r\n\r\n

Vitamin A c\u0169ng r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 duy tr\u00ec s\u1ee9c kh\u1ecfe c\u1ee7a ng\u01b0\u1eddi m\u1eb9 khi mang thai. N\u00f3 h\u1ed7 tr\u1ee3 h\u1ec7 th\u1ed1ng mi\u1ec5n d\u1ecbch, th\u1ecb l\u1ef1c v\u00e0 s\u1ee9c kh\u1ecfe l\u00e0n da, \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi s\u1ee9c kh\u1ecfe t\u1ed5ng qu\u00e1t c\u1ee7a ng\u01b0\u1eddi m\u1eb9 v\u00e0 thai nhi \u0111ang ph\u00e1t tri\u1ec3n.<\/p>\r\n\r\n\r\n\r\n

Trao \u0111\u1ed5i v\u1edbi chuy\u00ean gia Dinh d\u01b0\u1ee1ng \u0111\u1ec3 bi\u1ebft th\u00eam nhi\u1ec1u c\u00f4ng d\u1ee5ng c\u1ee7a vitamin A h\u01a1n:<\/p>\r\n\r\n\r\n\r\n

CHUY\u00caN GIA DINH D\u01af\u1ee0NG<\/a><\/div>\r\n\r\n\r\n\r\n

Li\u1ec1u l\u01b0\u1ee3ng vitamin A khuy\u1ebfn ngh\u1ecb<\/h2>\r\n\r\n\r\n\r\n

Li\u1ec1u l\u01b0\u1ee3ng b\u1ed5 sung vitamin A \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb thay \u0111\u1ed5i t\u00f9y theo \u0111\u1ed9 tu\u1ed5i, giai \u0111o\u1ea1n s\u1ed1ng v\u00e0 nhu c\u1ea7u c\u00e1 nh\u00e2n. \u0110i\u1ec1u quan tr\u1ecdng c\u1ea7n l\u01b0u \u00fd l\u00e0 nhu c\u1ea7u vitamin A c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng th\u00f4ng qua ch\u1ebf \u0111\u1ed9 \u0103n u\u1ed1ng c\u00e2n b\u1eb1ng v\u00e0 vi\u1ec7c b\u1ed5 sung nh\u1ea5t l\u00e0 vitamin A li\u1ec1u cao ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n d\u01b0\u1edbi s\u1ef1 h\u01b0\u1edbng d\u1eabn c\u1ee7a chuy\u00ean gia ch\u0103m s\u00f3c s\u1ee9c kh\u1ecfe.<\/p>\r\n\r\n\r\n\r\n

D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ee9c khuy\u1ebfn ngh\u1ecb chung h\u00e0ng ng\u00e0y (recommended daily allowance – RDA) v\u00e0 m\u1ee9c ti\u00eau th\u1ee5 tr\u00ean c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c (upper level – UL) \u0111\u1ed1i v\u1edbi vitamin A theo \u0111\u1ed9 tu\u1ed5i:<\/p>\r\n\r\n\r\n\r\n