Evolutionary BiologybioRxivPreprint
Increased calcidiol level in redhaired people: Could redheadedness be an adaptation to temperate climate?
J. Flegr, K. Sykorova, V. Fiala…·S. Kankova
The paper investigates calcidiol and folic acid levels in redhaired and non-redhaired individuals, finding higher calcidiol in redhaired people and suggesting a physiological adaptation to low UV-B radiation.
DOI 10.1101/2019.12.30.890889