Does skin pigmentation affect vitamin D synthesis?

Vitamin D synthesis is highly dependent on the concentration of melanin in the skin as melanin absorbs and scatters UVR-B, resulting in a less efficient conversion of 7-dehydrocholesterol to previtamin D3[3]. Therefore, dark-skinned individuals will experience slower vitamin D synthesis than light-skinned ones.

Does skin pigmentation affect vitamin D?

Skin pigmentation, i.e., melanin, absorbs the UVR that initiates vitamin D synthesis, and hence decreases the vitamin D that is made for a given exposure compared to less pigmented skin.

Does dark skin affect vitamin D absorption?

Among Americans of color, the vitamin D deficiency rate jumps to 70%. Pigment in persons with darker skin blocks sunlight absorption, a key process for vitamin D production.

Does darker skin produce less vitamin D?

Melanin is the pigment that provides skin color, and individuals with darker skin have more of it than those with lighter skin. Having more melanin reduces your ability to synthesize vitamin D from the sun, resulting in lower 25-hydroxyvitamin D levels, according to the ODS.

Does melanin interfere with vitamin D production?

Melanin has photoprotective action and protects the skin from harmful effects of ultraviolet radiations. High melanin level inhibits the production of vitamin D in the skin. Vitamin D is a prohormone that helps in the absorption of calcium from the gut.

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Does lighter skin synthesize vitamin D?

Vitamin D synthesis is highly dependent on the concentration of melanin in the skin as melanin absorbs and scatters UVR-B, resulting in a less efficient conversion of 7-dehydrocholesterol to previtamin D3[3]. Therefore, dark-skinned individuals will experience slower vitamin D synthesis than light-skinned ones.

Does lighter skin produce more vitamin D?

Circulating vitamin D concentrations differ by skin color: Individuals with darker skin produce less vitamin D with the same amount of sunlight exposure than individuals with lighter skin color [10,12].

Does melanin protect against UV?

The sun’s ultraviolet light can cause major damage to the skin. The outer layer of the skin has cells that contain the pigment melanin. Melanin protects skin from the sun’s ultraviolet rays. These can burn the skin and reduce its elasticity, leading to premature aging.

How much vitamin D should I take brown skin?

People with darker skin can benefit from consuming 1,000–2,000 IU (25–50 mcg) of vitamin D daily, especially during winter months ( 32 ).