Vitamin D Deficiency: 5 Warning Signs Your Body May Be Running Low on This Essential Nutrient

Vitamin D plays an important role in maintaining healthy bones and muscles and supporting normal immune function. Despite its importance, low vitamin D levels can sometimes go unnoticed because the symptoms may be mild, vague or easily confused with other health problems.

Persistent tiredness, muscle weakness or unexplained aches, for example, can occur for many different reasons.