With all the emphasis on not sitting out in the sun, some experts believe that as many as three out of four people in the U.S. are Vitamin D deficient. So unlike gluten, “D” has now become the do eat du jour. But is there a downside to taking too much? More importantly, though, how do we know that we are deficient to begin with? Spry’s Better Than Before blogger Jane Wilkens Michael asks the experts for guidance on this hot topic. CLICK HERE TO READ MORE.