Vitamin D3 is normally produced in our bodies by exposure to sunlight, or obtained from our diets in foods that contain Vitamin D3 like fortified-milk, some cereals, orange juice, oily fish (e.g., salmon, tuna, sardines, and mackerel), cod fish, shrimp, eggs, and dietary supplements. Due to our obsession with avoiding wrinkles, and concerns over skin cancer, most of us completely cover our skin with sunscreen and protective clothing year-round. We don’t get any type of sun exposure on a regular basis, so we don’t make enough Vitamin D3 in our skin. Combined with our deteriorating diets that are increasingly filled with poorer food containing little to no Vitamin D3, it is simple math. We don’t make enough in our skin, or eat enough in our diets, to lower our cancer risks.