APRNEWS - The importance of vitamin D cannot be overemphasized. For most people, its one of the things parents ring into their ears at a very tender age, forcing them to play outside instead of staying inside with their toys. Sufficient vitamin D in the body helps prevent conditions like osteoporosis and rickets. In addition to this, it helps keep the immune system in optimal condition and aids the absorption of minerals like magnesium and calcium through the gut.