7 signs your body has low levels of vitamin D

Vitamin D is crucial for various bodily functions like bone health and immune support. Deficiency can lead to health issues, including weak immunity, bone density loss, and mood disorders. As per a Harvard report, the Recommended Dietary Allowance for adults 19 years and older is 600 IU (15 mcg) daily for men and women, and for adults >70 years it is 800 IU (20 mcg) daily.