Vitamin D Deficiency in the United States: Causes, Symptoms & Prevention

Person indoors in a northern U.S. city holding a vitamin D supplement bottle with sunlight through the window, symbolizing deficiency risks.

Vitamin D plays a crucial role in maintaining healthy bones, supporting the immune system, improving mood, and regulating calcium levels. Yet despite its importance, vitamin D deficiency in the United States is surprisingly common. From long winters to lifestyle habits, many Americans are not getting the levels of vitamin D they need. In this article, … Read more