Linked from

The 33 pages that link to Vitamin D, each with the reason it gives.

• Multiple sclerosisRelated: Low levels are associated with increased risk, though their causal role is not fully settled.

• MelaninRelated: Skin pigmentation affects how much ultraviolet radiation reaches the processes that produce vitamin D.

• Lactose intoleranceRelated: Dairy avoidance can also reduce intake when fortified milk is a dietary source.

• UltravioletRelated: UVB initiates vitamin D production in human skin.

• SteroidRelated: Vitamin D is made from a cholesterol-related precursor after ultraviolet exposure.

• Seasonal affective disorderRelated: Low winter levels have been studied as a possible contributor, but their causal role remains unsettled.

• OsteomalaciaRelated: Deficiency is a common cause of inadequate mineral supply in osteomalacia.

• Cow's milkRelated: Many countries fortify cow's milk with vitamin D to support calcium absorption.

• HypocalcemiaRelated: Deficiency can reduce intestinal calcium absorption enough to lower blood calcium.

• RicketsRelated: Deficiency is the most common cause of rickets because it impairs mineral availability for growing bone.

• Ultraviolet indexRelated: UV exposure can support vitamin D production, creating a trade-off with skin damage.

• SterolRelated: Ultraviolet light converts a cholesterol-related skin precursor into vitamin D3.

• Parathyroid glandRelated: The hormone stimulates renal activation of vitamin D, increasing intestinal calcium absorption.

• Ultraviolet-BRelated: Ultraviolet-B initiates vitamin D production in skin by converting 7-dehydrocholesterol.

• Calcium gluconateRelated: Low vitamin D can contribute to deficiency that calcium supplementation alone may not correct.

• SunlightRelated: Ultraviolet B in sunlight enables vitamin D production in human skin.

• Adolf WindausRelated: Windaus’s sterol studies helped identify vitamin D’s chemical relationship to cholesterol.

• Itai-itai diseaseRelated: Kidney damage can disrupt vitamin D activation, worsening bone disease.

• Bone (anatomy)Related: Adequate vitamin D enables normal mineralization of bone.

• PogonaRelated: Its production and dietary availability matter for healthy Pogona bone development.