My wife has vitamin d deficiency; what are the causes and associated dangers?

Bone density: Vitamin d can be ingested (in milk or supplements) and can also be created in your skin via sun exposure. The latter is becoming less common as most of us use sunscreen! vit d plays a vital role in bone development and woman are at increased risk for osteoporosis. Got milk? Increase milk intake, use supplements as necessary, and increase weight bearing exercise to build bone!