Ch\u1ed1ng oxy h\u00f3a<\/figcaption><\/figure>\r\n<\/figure>\r\n\r\n\r\n\r\nVitamin C l\u00e0 m\u1ed9t trong nh\u1eefng ch\u1ea5t ch\u1ed1ng oxy h\u00f3a m\u1ea1nh m\u1ebd nh\u1ea5t trong t\u1ef1 nhi\u00ean. Ch\u1ea5t ch\u1ed1ng oxy h\u00f3a n\u00e0y \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c b\u1ea3o v\u1ec7 c\u01a1 th\u1ec3 kh\u1ecfi s\u1ef1 t\u1ea5n c\u00f4ng c\u1ee7a c\u00e1c g\u1ed1c t\u1ef1 do, l\u00e0 nh\u1eefng ph\u00e2n t\u1eed kh\u00f4ng \u1ed5n \u0111\u1ecbnh \u0111\u01b0\u1ee3c t\u1ea1o ra trong qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i ch\u1ea5t ho\u1eb7c do t\u00e1c \u0111\u1ed9ng t\u1eeb m\u00f4i tr\u01b0\u1eddng nh\u01b0 \u00f4 nhi\u1ec5m, tia UV, v\u00e0 kh\u00f3i thu\u1ed1c l\u00e1. Khi c\u00e1c g\u1ed1c t\u1ef1 do t\u00edch t\u1ee5 qu\u00e1 m\u1ee9c, ch\u00fang c\u00f3 th\u1ec3 g\u00e2y t\u1ed5n h\u1ea1i \u0111\u1ebfn c\u00e1c t\u1ebf b\u00e0o, l\u00e0m h\u1ecfng DNA v\u00e0 c\u00e1c c\u1ea5u tr\u00fac t\u1ebf b\u00e0o kh\u00e1c, d\u1eabn \u0111\u1ebfn l\u00e3o h\u00f3a s\u1edbm v\u00e0 t\u0103ng nguy c\u01a1 m\u1eafc c\u00e1c b\u1ec7nh l\u00fd m\u00e3n t\u00ednh nh\u01b0 b\u1ec7nh tim, ung th\u01b0, v\u00e0 tho\u00e1i h\u00f3a th\u1ea7n kinh.
Vitamin C ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch trung h\u00f2a c\u00e1c g\u1ed1c t\u1ef1 do n\u00e0y, bi\u1ebfn ch\u00fang th\u00e0nh c\u00e1c ph\u00e2n t\u1eed \u00edt g\u00e2y h\u1ea1i h\u01a1n, t\u1eeb \u0111\u00f3 b\u1ea3o v\u1ec7 c\u00e1c t\u1ebf b\u00e0o kh\u1ecfi s\u1ef1 t\u1ed5n th\u01b0\u01a1ng. Qu\u00e1 tr\u00ecnh n\u00e0y kh\u00f4ng ch\u1ec9 gi\u00fap duy tr\u00ec s\u1ef1 tr\u1ebb trung v\u00e0 kh\u1ecfe m\u1ea1nh c\u1ee7a l\u00e0n da m\u00e0 c\u00f2n ng\u0103n ng\u1eeba c\u00e1c b\u1ec7nh l\u00fd li\u00ean quan \u0111\u1ebfn l\u00e3o h\u00f3a. H\u01a1n n\u1eefa, vitamin C c\u00f2n tham gia v\u00e0o qu\u00e1 tr\u00ecnh t\u00e1i t\u1ea1o c\u00e1c ch\u1ea5t ch\u1ed1ng oxy h\u00f3a kh\u00e1c, nh\u01b0 vitamin E, gi\u00fap t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 c\u01a1 th\u1ec3 to\u00e0n di\u1ec7n.<\/p>\r\n
C\u01a1 ch\u1ebf t\u00e1c \u0111\u1ed9ng c\u1ee7a Vitamin C v\u1edbi h\u1ec7 mi\u1ec5n d\u1ecbch<\/strong> Vitamin C \u0111\u00f3ng vai tr\u00f2 thi\u1ebft y\u1ebfu trong vi\u1ec7c duy tr\u00ec v\u00e0 t\u0103ng c\u01b0\u1eddng h\u1ec7 mi\u1ec5n d\u1ecbch – h\u1ec7 th\u1ed1ng b\u1ea3o v\u1ec7 t\u1ef1 nhi\u00ean c\u1ee7a c\u01a1 th\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c t\u00e1c nh\u00e2n g\u00e2y b\u1ec7nh. M\u1ed9t trong nh\u1eefng ch\u1ee9c n\u0103ng quan tr\u1ecdng nh\u1ea5t c\u1ee7a vitamin C l\u00e0 k\u00edch th\u00edch s\u1ef1 s\u1ea3n xu\u1ea5t v\u00e0 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c t\u1ebf b\u00e0o b\u1ea1ch c\u1ea7u, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c t\u1ebf b\u00e0o lympho v\u00e0 th\u1ef1c b\u00e0o. Nh\u1eefng t\u1ebf b\u00e0o n\u00e0y l\u00e0 nh\u1eefng “chi\u1ebfn binh” c\u1ee7a h\u1ec7 mi\u1ec5n d\u1ecbch, c\u00f3 nhi\u1ec7m v\u1ee5 ph\u00e1t hi\u1ec7n v\u00e0 ti\u00eau di\u1ec7t c\u00e1c vi khu\u1ea9n, virus, v\u00e0 c\u00e1c t\u00e1c nh\u00e2n g\u00e2y b\u1ec7nh kh\u00e1c.
Vitamin C c\u00f2n t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng th\u1ef1c b\u00e0o, qu\u00e1 tr\u00ecnh m\u00e0 c\u00e1c t\u1ebf b\u00e0o mi\u1ec5n d\u1ecbch “nu\u1ed1t” v\u00e0 ti\u00eau h\u00f3a c\u00e1c t\u00e1c nh\u00e2n g\u00e2y b\u1ec7nh. \u0110\u1ed3ng th\u1eddi, n\u00f3 gi\u00fap c\u01a1 th\u1ec3 t\u1ea1o ra c\u00e1c h\u1ee3p ch\u1ea5t quan tr\u1ecdng nh\u01b0 interferon, m\u1ed9t lo\u1ea1i protein gi\u00fap ng\u0103n ch\u1eb7n s\u1ef1 lan r\u1ed9ng c\u1ee7a virus trong c\u01a1 th\u1ec3. Ngo\u00e0i ra, vitamin C c\u00f2n h\u1ed7 tr\u1ee3 trong vi\u1ec7c duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a h\u00e0ng r\u00e0o b\u1ea3o v\u1ec7 da – m\u1ed9t ph\u1ea7n quan tr\u1ecdng c\u1ee7a h\u1ec7 mi\u1ec5n d\u1ecbch. Da l\u00e0 l\u1edbp b\u1ea3o v\u1ec7 \u0111\u1ea7u ti\u00ean c\u1ee7a c\u01a1 th\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c y\u1ebfu t\u1ed1 g\u00e2y h\u1ea1i t\u1eeb m\u00f4i tr\u01b0\u1eddng nh\u01b0 vi khu\u1ea9n v\u00e0 tia UV. B\u1eb1ng c\u00e1ch th\u00fac \u0111\u1ea9y s\u1ea3n xu\u1ea5t collagen, vitamin C kh\u00f4ng ch\u1ec9 gi\u00fap da \u0111\u00e0n h\u1ed3i v\u00e0 s\u0103n ch\u1eafc m\u00e0 c\u00f2n ng\u0103n ng\u1eeba s\u1ef1 x\u00e2m nh\u1eadp c\u1ee7a c\u00e1c vi khu\u1ea9n v\u00e0 ch\u1ea5t g\u00e2y h\u1ea1i kh\u00e1c.
T\u00f3m l\u1ea1i, vi\u1ec7c b\u1ed5 sung \u0111\u1ea7y \u0111\u1ee7 vitamin C kh\u00f4ng ch\u1ec9 gi\u00fap t\u0103ng c\u01b0\u1eddng h\u1ec7 mi\u1ec5n d\u1ecbch m\u00e0 c\u00f2n b\u1ea3o v\u1ec7 c\u01a1 th\u1ec3 kh\u1ecfi nhi\u1ec1u b\u1ec7nh l\u00fd.<\/p>\r\n\r\n\r\n\r\n