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The team, based at Brigham and Women’s Hospital and Harvard Medical School in Boston, presented their study at the American Assn. for Cancer Research International Conference on Frontiers in Cancer Prevention Research.
Examining data from the Nurses’ Health Study, which followed 72,921 people between 1984 and 2008, and the Health Professionals Follow-Up Study, which followed 39,976 people between 1986 and 2008, they found 25,480 skin cancer cases. Basal cell carcinomas represented 22,786 of the cases, squamous cell carcinomas 1,953 and melanomas 741.
Women who drank more than three cups of coffee had a 20% reduction in risk for basal cell carcinoma. Men who drank that much coffee had a 9% reduction in risk of the slow-growing cancer. People who drank the most coffee had the lowest risk. The team did not identify reduced risk for squamous cell carcinoma.
Co-author Fengju Song, a postdoctoral fellow in dermatology, said that the discovery could help prevent cancers in the future.
“Daily dietary factors with even small protective effects may have great public health impact,” Song said in a statement. “Our study indicates that coffee consumption may be an important option to help prevent basal cell carcinoma.”
Unlike melanomas, which grow rapidly and can be deadly, basal cell carcinomas rarely spread to other organs. They are the most common form of skin cancer in the United States, with about a million new cases arising each year. The Skin Cancer Foundation and the American Cancer Society offer more information about basal cell carcinomas.
Researchers will have to do more work to identify the mechanism behind the reduced cancer risk, Song said.
Many thanks to The Chicago Tribune for the coffee and cancer story.