Increasing Number of Redheads in the World: What Science Says

A study from Harvard University, published on April 25, 2026, in the journal Nature, reveals a significant increase in the global population of redheads, with nearly 479 genetic variants evolving over the last 10,000 years. Researchers found that over 60% of these modifications are linked to current human characteristics, and some variants are associated with diseases such as type 2 diabetes and celiac disease. The study also highlights complex gene evolutions in response to environmental changes.