不是放多了,而是你想的太多了。五十岁以上的,对口服B12吸收减少。有时靠打肌肉才能维持

本帖于 2021-10-30 09:21:33 时间, 由普通用户 fuz 编辑

https://www.webmd.com/vitamins/ai/ingredientmono-926/vitamin-b12

Because 10% to 30% of older people do not absorb food-bound vitamin B12 efficiently, those over 50 years should meet the RDA by eating foods fortified with B12 or by taking a vitamin B12 supplement. Supplementation of 25-100 mcg per day has been used to maintain vitamin B12 levels in older people.

 

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