The dilemma with Vitamin D (Miami Herald) Here is a dilemma. The latest studies on vitamin D are pointing to a D-ficiency in most Americans. It seems the government recommendation, called the AI (adequate intake), needs to be increased if it is to keep up with the latest research findings. Vitamin D is not in a lot of foods, so for most people sun exposure is a primary source. Yet too much sun exposure increases the risk for skin ... [News Source]