Their article "Increased Caffeine Intake Is Associated with Reduced Risk of Basal Cell Carcinoma of the Skin" appears in the journal Cancer Research.
The authors studied caffeine consumption and the associated risks of basal cell carcinoma (BCC), squamous cell carcinoma, and melanoma. They used the Nurses' Health Study and the Health Professionals Follow-up Study.
They studied almost 113,000 men and women, and their coffee habits on a daily basis.
Basically, they found that those who drank three or more cups of coffee a day had a 20% lower risk of basal cell carcinoma (BCC) than those didn't drink coffee . They stated their results as "The amount of caffeine intake from all dietary sources was inversely associated with BCC risk. Compared with the lowest quintile, the highest quintile had the lowest risk (RR, 0.82 in women; 95% CI:,0.77–0.86 and RR, 0.87 in men; 95% CI, 0.81–0.94; Ptrend < 0.0001 in both)."
Page two concludes.