Individuals with darker skin pigmentation require significantly longer sun exposure to produce the same amount of vitamin D compared to those with lighter skin.

“African Americans with darker pigmentation, which protects them from the burning rays of the sun, it's a natural sunscreen, had to stay in the sun six times as long as someone with none of that natural sunscreen.”

“those who have more naturally occurring melanin have more built-in protection from UV radiation which means less UV conversion for vitamin D so darker skinned people are going to have um lower vitamin D levels”

“well because in order for your skin to make Vitamin D it requires UVB radiation from the sun to hit your skin and this induces um the the conversion of something called D7 dehydr cholesterol into the prev vitamin D well things that block UVB also block the ability of your skin to produce it from the Sun so if you're wearing sunscreen or if you have darker melanin content then you're more likely to not be able to make as much vitamin D from the Sun”

“for examp example African-Americans have to stay in the sun anywhere between 6 to 10 times longer than Caucasians with fair skin to make the same amount of vitamin D3 In Their Skin”