Vitamin D

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Vitamin D

Vitamin D is an essential nutrient that is not adequate in most American diets.1 While vitamin D can be synthesized by the body, this process is dependent on sun exposure, which can be limited because of inadequate exposure and risk of sunburn. According to the American Academy of Pediatrics (AAP), infants who are exclusively breastfed or receive less than 1 liter of formula daily should be supplemented with 400 IU of vitamin D daily. Older children may also require supplemental vitamin D, and many adults benefit from supplementation as well.*

Properties and mechanism of action

Vitamin D is both a nutrient and a hormone. By promoting calcium absorption in the gut and maintaining concentrations of calcium and phosphate in the body, vitamin D supports bone growth and mineralization.*

Vitamin D plays other roles in the body, including the regulation of normal cell growth, neuromuscular function, and healthy glucose metabolism.*

Scientific support

Several randomized, controlled trials have also demonstrated a relationship between vitamin D supplementation and strong bones.2*

Some studies support vitamin D’s role in regulating the immune system.3*

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.