健康生活 – Vitamin C

iHealth News - Vitamin C

维生素C大家都不陌生,因为它的抗氧化作用和清除自由基等功能,很多商家开始大打美容养颜牌,维C补充剂也深受欢迎。可效果好不好呢?

为什么喝维生素C?
维生素C有很强的抗氧化作用,并且作为羟化过程底物和酶的辅助因子,促进细胞合成、皮肤胶原蛋白的合成,而且还可清除过多的自由基,所以在美容抗衰老方面大显身手,让皮肤紧致而有弹性,促进伤口创伤愈合。

维C功能强大,但是也不是越多越好。
根据资料显示:维C毒性很低,长期摄入1000毫克/天无不良反应。但是,当大量服用,摄入量超过3000毫克/天会出现腹泻、胃肠紊乱、草酸和尿酸排泄量增加、肾结石的形成增多等不良反应。

所以,对于正常人,千万不要长期把补充剂当做日常必备,有可能会得不偿失,最好的补充方法还是通过日常饮食的蔬菜水果中获取必需的维生素C,这样才最靠谱的方法。



揭晓维生素C的秘密
维生素家族中,维生素C是知名度较高的一种。
维C能促进骨胶原的合成;利于创伤更快愈合;
促进铁、钙的吸收;改善脂肪、类脂和胆固醇的代谢;
咋一听,维生素C貌似带来很多好处,
但那是不是说,平时我们补充维生素C越多越好呢?
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Vitamin A and C Supplements

Supplements


Many people take vitamins, but they do so without full knowledge of the consequences. Vitamins aren’t necessarily good for you, and it’s far too easy to overdose on them. Too much vitamin C and D may cause: kidney stones, difficulty in controlling blood sugar levels, heart issues, blood clots, red blood cell destruction, dangerous abnormal heart rhythms, poor appetite, nausea, vomiting, and constipation. But when vitamins are eaten as part of a wholesome plant, such as carrot or tomato, there are no listed harmful effects.

许多人服用维生素补充剂,但他们没有完全了解后果。维生素补充剂对您不一定是好的,而且太容易就会服用过量。过量的维生素C和D可能会导致:肾结石、难以控制的血糖值、心脏问题、血栓、红细胞被破坏、危险的心律异常、食欲不振、噁心、呕吐和便秘。但当维生素作为完整植物性食物(如:胡萝卜或番茄)中的一部分来食用时,则不会对身体有害。


https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/1105975
One study published in the journal JAMA Internal Medicine, which examined data from nearly 40,000 women over 19 years, found that, on average, women who took supplements had an increased risk of dying compared with women who didn’t take supplements. Multivitamins also did little or nothing to protect against common cancers, cardiovascular disease, or death.


There are seven supplements that you should take carefully.
https://www.everydayhealth.com/news/supplements-risks-every-women-should-know/
https://www.fda.gov/consumers/consumer-updates/fda-101-dietary-supplements

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