The nutrition aisle of your local supermarket can make you dizzy. Row upon row, bottle after bottle of tablets and capsules promise health, youth, vigor, longevity, energy, regularity — even better sex. How do you choose one from another? How much should you take? Should children take a daily multivitamin? Do supplements even work?
![](https://osu-wams-blogs-uploads.s3.amazonaws.com/blogs.dir/2648/files/2015/02/frei1-e1490211710252.jpg)