Vitamin D = the most common vitamin that doctors themselves actually take: http://www.cnn.com/2008/HEALTH/diet.fitness/11/13/ep.vitamin.primer/index.html http:/

Vitamin D = the most common vitamin that doctors themselves actually take: http://www.cnn.com/2008/HEALTH/diet.fitness/11/13/ep.vitamin.primer/index.html http://www.cnn.com/2008/HEALTH/diet.fitness/11/13/ep.vitamin...