December 2019 in “bioRxiv (Cold Spring Harbor Laboratory)” Redheaded people have higher levels of a vitamin D precursor, suggesting red hair may be an adaptation for better vitamin D synthesis in areas with less sunlight.
January 2019 in “Figshare” Redheaded people have higher levels of vitamin D precursor, suggesting their hair color may be an adaptation to low sunlight areas.
97 citations,
March 2009 in “Journal of steroid biochemistry and molecular biology/The Journal of steroid biochemistry and molecular biology” Balanced vitamin D levels are crucial to delay aging and prevent related diseases.
5 citations,
June 2020 in “Experimental dermatology” Redheaded people may have evolved to efficiently make vitamin D in areas with less sunlight.
July 2022 in “International Journal of Contemporary Pediatrics” Two siblings with a rare type of rickets and hair loss had low vitamin D levels, which is not typical for their condition.