For optimal health, one has to maintain a vitamin D level of 40-60 ng/ml year-round. Growing evidence suggests that 40 ng/ml seems to be the magic number at which multiple health benefits are obtained.
Vitamin D deficiency has been associated with a wide range of illnesses, such as stroke, hypertension, autoimmune disease, heart disease, rheumatoid arthritis, multiple sclerosis, infectious diseases, Alzheimer`s disease, and Chron`s disease as well as cancers of the colon, prostate, esophagus, breast, ovaries, and the lymphatic system.
Vitamin D Lowers Overall Mortality Risk
As reported by the Institute of Medicine, there is a close relationship between vitamin D and overall mortality risk. A 54-month study including over 422,800 adults has shown that those who were most deficient in vitamin D were at 88% increased mortality risk.
By following sun exposure guidelines and not getting burned you can optimize these benefits and maximize the risk of skin damage which could eventually lead to skin cancer. On the other hand, overexposure to sun is the real problem regarding the risk for skin cancer.
Higher Vitamin D = Lower Cancer Risk
Earlier research has shown that a vitamin D level of 50 ng/ml was linked with a 50 percent lower risk of breast cancer. Patients suffering from breast cancer with vitamin D level of 30 ng/ml also had higher survival rate than those with low levels.
Recently, a team of researchers at University of California, San Diego School of Medicine found that raising serum 25-hydroxyvitamin D (25(OH)D) to 40ng/ml can lower the risk of cancer by staggering 67 percent!