Why Are So Many People Popping Vitamin D? There is no epidemic of vitamin D deficiency, experts say, yet pointless testing and treatment are rampant. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Carbon in Atmosphere Is Rising, Even as Emissions StabilizeThe Solution for Skin Ailments Could Be Right Under Your NoseThe Lab Says It’s Cancer. But Sometimes the Lab Is Wrong.Matter: Fire May Be the Only Remedy for a Plague Killing Deer and ElkHow I Got the Shot: To Photograph a Galápagos Tortoise, Get Out of the RaceTake a Number: Nearly Half of Teens Have Had Sex by Age 19, Survey Finds