Although we can find many foods in the supermarket that have been fortified with a synthetic form of vitamin D, there are only a select number of foods that naturally contain vitamin D. Normally, the human body makes vitamin D. Exposure to sunlight is the catalyst for the synthesis of this hormone in the skin. But today, many people spend countless hours indoors, and exposure to the sun is limited. This may be a cause of many ailments, including a depressed mood and weak bones. With age, bones can become […]