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Decreased exposure of the skin to sunlight is a common cause of vitamin D deficiency. [1] People with a darker skin pigment with increased amounts of melanin may have decreased production of vitamin D. [3] Melanin absorbs ultraviolet B radiation from the sun and reduces vitamin D production. [3] Sunscreen can also reduce vitamin D production. [3]
This condition can be caused by vitamin D, calcium or phosphorus deficiency. [86] Vitamin D deficiency remains the main cause of rickets among young infants in most countries because breast milk is low in vitamin D, and darker skin, social customs, and climatic conditions can contribute to inadequate sun exposure.
Vitamin D is nicknamed “the sunshine vitamin” because your body makes the nutrient when sunlight touches your bare skin. However, genetic and environmental factors, such as having dark skin or ...
In addition, lighter skin is able to generate more vitamin D (cholecalciferol) than darker skin, so it would have represented a health benefit in reduced sunlight if there were limited sources of vitamin D. [13] Hence the leading hypothesis for the evolution of human skin color proposes that:
Folks with dark skin (your body may make less vitamin D from the sun); People carrying a lot of bodyweight or who have had gastric bypass surgery; Those who wear a head covering, ...
It can decrease anxiety, increase feelings of wellbeing, and really affect your sleep.” The darker your skin is, the less vitamin D your skin makes – so it becomes even more of a priority.
Northern latitudes have selection for lighter skin that allows UV rays to produce vitamin D from 7-dehydrocholesterol. Conversely, latitudes near the equator have selection for darker skin that can block the majority of UV radiation to protect from toxic levels of vitamin D, as well as skin cancer. [35]
If you rarely eat these foods, you may have a higher risk of vitamin D deficiency. Have dark skin. People with darker skin pigmentation produce less vitamin D naturally in response to sunlight. If ...