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. This has been observed in UVR intervention studies  and more generally.
What skin color absorbs the most vitamin D?
While it’s well known that Black people have the highest rates of vitamin D deficiency the United States, the reasons why may be complex and warrant more study, says Meltzer. Melanin is the pigment that provides skin color, and individuals with darker skin have more of it than those with lighter skin.
Does dark skin affect vitamin D absorption?
Vitamin D deficiency is not common. 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.
Does dark skin reduce vitamin D production?
The lower 25(OH)D of blacks and other groups with dark skin results primarily from the fact that pigmentation reduces vitamin D production in the skin.
Does skin color affect vitamin D levels?
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.
Can you get vitamin D through clothes?
Blocking UVB rays can occur through clothing as well as through the use of sunscreen. In both cases, your level of vitamin D production will be diminished.
Does tanned skin absorb less vitamin D?
Tan skin may provide some protection against the sun’s harmful UV rays, but this increase in pigment blocks vitamin D synthesis and limits the skin’s ability to produce vitamin D, according researchers in Brazil.
How much vitamin D should I take brown skin?
ranging from 2,000 up to 10,000 i.u. daily. 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.
Why does lighter skin absorb more vitamin D?
Humans with light skin pigmentation living in low sunlight environments experience increased vitamin D synthesis compared to humans with dark skin pigmentation due to the ability to absorb more sunlight. Almost every part of the human body, including the skeleton, the immune system, and brain requires vitamin D.
Does your face produce vitamin D?
When your skin is exposed to sunlight, it makes vitamin D from cholesterol. The sun’s ultraviolet B (UVB) rays hit cholesterol in the skin cells, providing the energy for vitamin D synthesis to occur. Vitamin D has many roles in the body and is essential for optimal health (2).
How can I absorb more vitamin D?
Avocados, nuts, seeds, full-fat dairy products and eggs are nutritious sources of fat that help boost your vitamin D absorption. Studies indicate that having vitamin D with a large meal or source of fat can significantly increase absorption.
What skin tone allows a person to maintain the vitamin D level?
Which skin tone allows someone to maintain the recommended level of vitamin D. lighter skin tone. allows more IVB rays to pass through which increases vitamin D production.