Why is vitamin d important?

Omnipresent. Traditionally, vit d has important role in bone health but is increasingly recognized as a hormone with role in various body systems including skin, immunity, etc.
Bone health. Vitamin d is important for bone health, improve and prevent cardiovascular disease, reduce the risk of cancers and overall general well-being.
Vitamin D & Uveitis. Association of Low Vitamin D Levels with Noninfectious Anterior Uveitis The data showed that the odds of developing uveitis were 4% lower for every 1-ng/mL increase in vitamin D levels. Though the authors conclude there is no confirmation of a causal effect between the two, it supports the growing body of literature. Http://jamanetwork. Com/journals/jamaophthalmology/article-abstract/2594012.