You can feel it in the air. Fall is right around the corner with winter following soon after. As our time in the natural sunlight gets shorter, our vitamin D levels drop. Vitamin D plays an important role in mood regulation, metabolism, immune system strengthening and brain function. Supplementing with vitamin D during the colder months goes a long way towards overall health AND body composition goals. It is wise to get your vitamin d levels checked by your doctor before experimenting with how much you should supplement with. Keep your vitamin d levels up throughout the fall and winter months and reap the benefits!