New studies and claims about vitamins are published daily, and many seem to contradict each other. What does an average consumer really need to know about vitamins?
跟维生素有关的新研究和声明每天都公布出来,而且很多都自相矛盾。一般人真正要维生素的什么呢?
“The fairly simple answer is, not much,” says Paul Thomas, EdD, RD, scientific consultant with the National Institutes of Health Office of Dietary Supplements. Almost everyone can benefit from taking a supplement with calcium because most people don’t get as much as they need through their diets — 1,000 mg a day for adults, increasing to 1,200 mg after age 50. Thomas notes that some vitamins become especially important at certain times in a person’s life. Pregnant women or women who may become pregnant should be certain to get enough folate, or folic acid, a B-complex vitamin — 600 units a day, rather than 400. And as you age, you should probably take a daily supplement to get additional B12, he suggests.
“非常简单的答案是,不需太多。”美国国立卫生研究院饮食补充办公室科学顾问教育学博士兼注册营养师Paul Thomas说。几乎每个人都可以从服用钙补充品中受益,因为大部分人没有从饮食中获得足够的营养——成人每天1000毫克,50岁之后增加到1200毫克。Thomas指出,一些维生素在人生中某些时候会变得非常重要。怀孕女性和即将怀孕的女性应吸收足够的叶酸,或维生素B——每天600个单位,而不是400个单位。他还建议,随着年龄的增长,还应该服用日常补充剂获得B12.
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