Vitamin D3 a fat-soluble vitamin, often referred to as sunshine vitamin. Vitamin D is primarily produced in our skin through exposure to sunlight. The most bioavailable form is vitamin D3 (cholecalciferol) dissolved in oil. It strengthens bones and muscles, supports our immune system, and promotes calcium absorption. This is why it is particularly valued by athletes. Vitamin D also plays a role in cell division – which could certainly contribute to longevity.
