Posted: Jul 13, 2016 12:16 am
http://www.bbc.co.uk/news/health-36762630
B.B.C. Article
People can carry a "silent" red hair gene that raises their risk of sun-related skin cancer, experts warn.
The Sanger Institute team estimate one in every four UK people is a carrier.
The gene's effect is comparable to two decades of sun exposure in terms of cancerous changes, they say.
While people with two copies of the gene will have ginger hair, freckles and pale skin and probably know to take extra care in the sun, those with one copy may not realise they are at risk.
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