Vitamin d what is it good for besides bones?

Many good things: Vitamin d regulates the calcium and phosphorus levels in the blood it inhibits parathyroid hormone secretion from the parathyroid gland vitamin d affects the immune system in the absence of vitamin k(blood thinner) , vitamin d can promote soft tissue calcification.It is showen to have effect on many syestems in the body (lungs, blood pressure, kidney functions).

Vitamin D: In addition to dr. Hadied's comments, vitamin d impacts conditions of the heart and blood vessels, including high blood pressure and high cholesterol. It's also important in diabetes, obesity, muscle weakness, multiple sclerosis, rheumatoid arthritis, copd, asthma, bronchitis, premenstrual syndrome (pms), and tooth and gum disease. Some research links deficiencies to depression also.

Depends on who you ask: It may play a role ins paresthesias and numbness, pain, dementia, falls, rheumatoid arthritis, viral infections, bacterial infections, multiple sclerosis and other things.