如何简练“eating vitamin reduces the risk of heart disease among those people eating vitamin”

题目

如何简练“eating vitamin reduces the risk of heart disease among those people eating vitamin”
此外：请问如何说“将这些服用了维生素的人编为A组,没服用的编为B组”

答案

这句有两个问题,“吃维生素”的“吃”一般用take而不用eat；among后面的意思跟前面重复了,因此要去掉.
Taking vitamins reduces the risk of heart disease.
第二句：
Mark those who take vitamins as group A,the opposite as group B.