The surprising health benefits of having orange hair
Key Points:
- A new study suggests the gene responsible for orange-red hair, linked to the pigment pheomelanin, may provide health benefits by protecting cells that produce the pigment.
- Pheomelanin production helps regulate cysteine levels in cells by converting excess cysteine into an inert pigment, preventing cysteine-induced cell damage.
- Researchers used zebra finches to demonstrate that blocking pheomelanin synthesis while increasing cysteine led to more severe cell damage, highlighting the pigment's protective role.
- This discovery explains why traits promoting pheomelanin, such as orange hair, persist despite their association with higher melanoma risk, as the pigment helps maintain cellular cysteine balance.
- The findings enhance understanding of melanoma risk and cysteine homeostasis, suggesting environmental factors affecting cysteine availability may influence cancer susceptibility.