What are peptides? FDA may ease restrictions on unproven health fad LiveNOW from FOX What are peptides? The treatments promising weight loss and better skin, explained Vox The Food and Drug Administration will hold a meeting this summer to consider easing restrictions on more than a half dozen peptide injections, a group of unapproved therapies that have become popular Have you thought about taking peptides that aren't approved by the FDA? Think again. CBS News' chief medical correspondent, @drlapook, shares a cautionary tale from medical history about why testing medications is