Vitamin B12 và axít folic không giúp giảm nguy cơ mất trí nhớ
Theo một nghiên cứu công bố trên tạp chí Thần kinh học của Mỹ, việc uống bổ sung vitamin B12 và axít folic có thể không giúp cải thiện chứng suy giảm trí nhớ như khuyến nghị lâu nay.
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