Gray Hair May Signal Lower Skin Cancer Risk, Study Finds
New research suggests a link between greying hair and a reduced risk of cancer-favorable-studies-of-a-melanoma-vaccine-disclosed-video/” title=”New weapon in fight against …: Favorable studies of a melanoma vaccine disclosed | video”>melanoma, the most dangerous form of skin cancer. A study published in Nature Cell Biology in October 2025, found that the process of hair turning grey may be a natural defense mechanism against the disease.
Researchers at The University of Tokyo, led by assistant professor Yasuaki Mohri, examined melanocyte stem cells – the cells responsible for hair pigment – in rodents exposed to cancer-causing substances.They discovered that when these cells become damaged, they are either eliminated from the body, resulting in grey hair, or continue to divide. Continued cell division, however, could potentially lead to tumour formation.
“While grey hair develops, the risk of melanoma together decreases,” Mohri stated.He explained that this process “functions as a protective mechanism against melanoma,” effectively removing potentially cancerous cells from the hair follicle.
Despite this finding, experts caution against assuming grey hair equates to immunity from skin cancer. “When these cells are gone, you get grey hair, but other factors still influence melanoma risk,” explained Ife J. Rodney, dermatologist and director of eternal Dermatology + Aesthetics.
Gary Goldenberg, assistant clinical professor at mount Sinai, echoed this sentiment, stating, “Having grey hair doesn’t mean you’re immune.Many patients with silver strands still develop melanoma.”
Key risk factors for melanoma remain consistent, including sunburn, chronic sun exposure, light skin, family history, and the use of tanning beds. Doctors strongly emphasize the importance of sun protection. “Strict sun protection is key,” Rodney said, adding that further human research is necessary.
“Grey hair shouldn’t be used to predict your melanoma risk or change your behavior. Sunscreen is still essential,” she concluded.
