Vitamin D, what influence does the season have on our levels? In the summertime there is adequate supply of this essential vitamin because of the opportunity for direct sun light.<br /><br />The winter time is a different story. Much shorter days and less direct sunlight causes lack of Vitamin D. Taking a daily supplement together with staying active all year is important.<br /><br />Developing as much regularity as possible is vital. What causes the most issues for people is big energy level swings.
