Vitamin D3 provides a range of health benefits, from bone health to immunity support.It also plays an important role in supporting immune function.Supports Immune FunctionReduced levels of vitamin D3, can affect your immune cells’ ability to protect against occasional environmental threats. In order for immune cells such as T cells to function efficiently, they must first encounter a seasonal or environmental threat. At this time, the T cells extend a special receptor that looks for vitamin D3. If the T cell cannot find the vitamin, it cannot be activated, nor can it become mobilized to protect you.Strong BonesOne of the most commonly known benefits of vitamin D3 is its important role in supporting bone health. This vitamin is vital for proper calcium, magnesium, and phosphorus absorption. Healthy HeartVitamin D3 helps promote normal cholesterol levels which supports optimal blood flow and arterial health. When combined with vitamin K2, proper D3 levels can also support arterial health.Happier MoodVitamin D3 can also support cognitive health. Serotonin, a hormone related to a healthy mood, increases when you are exposed to sunlight. In the same way, regular D3 supplementation can promote serotonin production and year-round mood support.Vitamin D3 is a must have.