Ask the Expert: Are dietary supplements legit?

Posted at 4:14 PM, Oct 14, 2016
and last updated 2016-10-14 17:34:04-04

While studies find little evidence of whether there's a benefit to them, sales of dietary supplements continue to grow.

In fact, it's now a $32 billion a year business.

Dr. Jennifer Mackinnon, from the Medical College of Wisconsin, joined Live at 4 with more.