What are the warning sign lack of vitamin D?

A sweaty head is a classic signal of low Vitamin D3, the form of D the body makes from sunlight. Bone pain and muscle weakness can signal low Vitamin D levels, too.

Over time, severely low D levels can cause an illness in children called rickets. In adults low D contributes to osteoporosis and the jawbone loss that accompanies periodontal disease. They're finding that Vitamin D plays many roles. Healthy D3 levels better mental outlook, improve physical energy, and fight cancer.