維他命C為什麼甜甜的? - 美白
By Susan
at 2016-09-21T23:51
at 2016-09-21T23:51
Table of Contents
這篇對維他命C有些介紹,故轉來。
希望想吃維他命C錠美白/強健保身等有幫助。
↓以下為原文↓
※ 引述《bokez (玻尿酸)》之銘言:
: 本宅最近感冒惹,買了維他命C來ㄘ
: 上面寫無糖口含片,但是ㄘ起來卻甜甜的
: 為什麼會醬紫捏?U掛ㄇ?
剛回到家看到有關食品營養的問題
職業病和強迫症就犯了
昨天回了篇牛奶文意外的爆了
許多鄉民也想要知道更多的食品營養知識
所以在這如果能看到相關的我也會盡我所能的回覆
-----------------------------------------------
先回答鄉民的問題 為什麼無糖口含錠會甜甜的
答案應該就是甜味劑,我剛剛估狗了一下維他命C錠的食品標示
有滿多會使用糖醇類代糖(除了些許甜味還會產生清涼感),
另外會使用阿斯巴甜等人工甘味劑(阿斯巴甜的問題以後有機會再和大家說)
回到我想講的就是其實感冒吃維他命C沒啥用
在一些細胞或動物實驗上確實有看到給予維他命C可以增加特定免疫反應
但在人體的資料呢?
在考科蘭資料庫有一篇文獻統整約30篇研究,共有1.1萬人參與者,
1. 平常就有在吃維他命C,能降低感冒風險約 5 %
2. 平常就有在吃維他命C的人,小孩子能縮短感冒時程約 13%,成年人縮短7.7%
也就是說魯宅博班生如我,不小心感冒了,以平均感冒天數7天計算,大概可以縮短
12小時的感冒期
3. 平常沒在吃維他命的人,感冒後才補充,結果是無效!!
補充維他命C也有風險
我們建議每天吃100毫克的維他命C(半顆芭樂或1顆奇異果就達標了)
而之前美國國家衛生研究院做過研究,發現我們攝取100毫克維他命C
就會使白血球中的維他命C達到飽和,
當攝取超過100毫克就可以開始從尿中測得維他命C(所以建議量設定在100毫克)
但看看市售的維他命C補充錠隨便都500毫克、1000毫克
這些如果直接排出就算了
維他命C的代謝產物是草酸,所以大量長期的補充維他命C是會增加尿中草酸的含量
進一步導致泌尿道結石的風險大幅增加
之前美國醫學會期刊的一篇流病就追了4.8萬名男性達11年,結果發現
1. 一週攝取7片(每片1000毫克)以下,勝算比或相對風險(我忘記是哪一個)增加66%
2. 一週攝取7片以上,勝算比或相對風險增加123%!
所以,維他命C不用補,多吃點水果就ok了
至於想讓感冒快點好,就算了吧!
--
想瞭解更多營養資訊與食安知識
請到 好食課 按個讚
http://www.facebook.com/awfosonfans/
--
希望想吃維他命C錠美白/強健保身等有幫助。
↓以下為原文↓
※ 引述《bokez (玻尿酸)》之銘言:
: 本宅最近感冒惹,買了維他命C來ㄘ
: 上面寫無糖口含片,但是ㄘ起來卻甜甜的
: 為什麼會醬紫捏?U掛ㄇ?
剛回到家看到有關食品營養的問題
職業病和強迫症就犯了
昨天回了篇牛奶文意外的爆了
許多鄉民也想要知道更多的食品營養知識
所以在這如果能看到相關的我也會盡我所能的回覆
-----------------------------------------------
先回答鄉民的問題 為什麼無糖口含錠會甜甜的
答案應該就是甜味劑,我剛剛估狗了一下維他命C錠的食品標示
有滿多會使用糖醇類代糖(除了些許甜味還會產生清涼感),
另外會使用阿斯巴甜等人工甘味劑(阿斯巴甜的問題以後有機會再和大家說)
回到我想講的就是其實感冒吃維他命C沒啥用
在一些細胞或動物實驗上確實有看到給予維他命C可以增加特定免疫反應
但在人體的資料呢?
在考科蘭資料庫有一篇文獻統整約30篇研究,共有1.1萬人參與者,
1. 平常就有在吃維他命C,能降低感冒風險約 5 %
2. 平常就有在吃維他命C的人,小孩子能縮短感冒時程約 13%,成年人縮短7.7%
也就是說魯宅博班生如我,不小心感冒了,以平均感冒天數7天計算,大概可以縮短
12小時的感冒期
3. 平常沒在吃維他命的人,感冒後才補充,結果是無效!!
補充維他命C也有風險
我們建議每天吃100毫克的維他命C(半顆芭樂或1顆奇異果就達標了)
而之前美國國家衛生研究院做過研究,發現我們攝取100毫克維他命C
就會使白血球中的維他命C達到飽和,
當攝取超過100毫克就可以開始從尿中測得維他命C(所以建議量設定在100毫克)
但看看市售的維他命C補充錠隨便都500毫克、1000毫克
這些如果直接排出就算了
維他命C的代謝產物是草酸,所以大量長期的補充維他命C是會增加尿中草酸的含量
進一步導致泌尿道結石的風險大幅增加
之前美國醫學會期刊的一篇流病就追了4.8萬名男性達11年,結果發現
1. 一週攝取7片(每片1000毫克)以下,勝算比或相對風險(我忘記是哪一個)增加66%
2. 一週攝取7片以上,勝算比或相對風險增加123%!
所以,維他命C不用補,多吃點水果就ok了
至於想讓感冒快點好,就算了吧!
--
想瞭解更多營養資訊與食安知識
請到 好食課 按個讚
http://www.facebook.com/awfosonfans/
--
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