Let's talk about one of the most important nutrients for our health - vitamin D3 (cholecalciferol). Many people are deficient in this essential vitamin, and in this episode I break down how it acts more like a hormone than a vitamin. Vitamin D3 impacts so many systems in our body from brain and mood to immunity, heart health and more. I provided an overview of some of the key studies showing the links between vitamin D3 levels and diseases like cancer, diabetes, arthritis and neurological conditions. I even talk about seasonal affective disorder, my personal experience with it, and its link to low levels of vitamin D3. Tune in for my recommendations on getting your vitamin D3 levels optimized through supplementation.