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 skin color affect vitamin D levels?
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.
What skin type absorbs the most vitamin D?
The pigment melanin, which is more prevalent in people with darker skin, reduces your body’s ability to make vitamin D in response to sunlight exposure. Essentially, this means that people who have pale skin produce vitamin D more quickly than people with darker skin.
Studies have shown that individuals with darker skin pigmentation require longer or more intense ultraviolet radiation exposure to synthesize sufficient levels of vitamin D. In other words, if you have darker skin, you tend to make less vitamin D in the sun than people with lighter skin.
Does vitamin D darken skin?
What does seem to be the general consensus though, is that whilst it’s probably unlikely that vitamin D supplements darken the skin, being exposed to sunlight helps us to manufacture vitamin D, and in this process, we may also get a tan.
Does dark skin need more vitamin D?
Some people are at greater risk of vitamin D deficiency including: People with naturally very dark skin. This is because the pigment (melanin) in dark skin doesn’t allow the skin to absorb as much UV radiation.
How much vitamin D should I take brown skin?
4,000 iu per day on most days should be adequate, especially if you are frequently out in the sun. You will probably need to take up to 10,000 iu daily (in 2 or 3 high-dose capsules or tablets) throughout the Winter to eliminate the risk of respiratory infections.
Can lack of vitamin D cause skin pigmentation?
Vitamin D is an essential hormone synthesized in the skin and is responsible for skin pigmentation. Low levels of vitamin D have been observed in vitiligo patients and in patients with other autoimmune diseases. Therefore, the relationship between vitamin D and vitiligo needs to be investigated more thoroughly.