When it comes to vitamins and health supplements, we’re often told that the more we take, the healthier we’ll be, but journalists Elah Feder & Annie Minoff find that the research tells a different story. This week, they join us to answer questions from callers like Olivia who asks, “Does hair, skin, and nail vitamins such as biotin actually do anything to make your hair, skin and nails healthier?” You can listen to ad-free new episodes of Science Rules! only on Stitcher Premium. For a free month of Stitcher Premium, go to stitcherpremium.com and use promo code ‘SCIENCE.’