A bald scalp helps the body produce more vitamin D
While often viewed as a cosmetic frustration, a bare scalp may have evolved as a clever biological solar panel to prevent nutrient deficiencies.
Male pattern baldness is most prevalent in Spain, where nearly 45% of men eventually lose their hair. While modern culture focuses on the vanity of the hairline, evolutionary biologists suggest the trait may have been a survival advantage for early humans migrating to northern latitudes. A hairless scalp provides a large, unobstructed surface area for the sun to trigger vitamin D production, which is crucial for bone health in regions with weak sunlight.
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