In February 2019 researchers from the USA published the results of their study to assess the relationship between coffee, tea and caffeine consumption and risk of non-melanoma skin cancer. A total of 63,257 individuals, aged 45-74 years, were involved in the study. Results showed that coffee drinking was associated with a reduced risk of non-melanoma skin cancer in a dose-dependent manner. Compared with non-drinkers, daily drinkers of black tea also had a reduced risk of non-melanoma skin cancer. Caffeine intake also reduced the risk of non-melanoma skin cancer in a dose dependent manner, ie individuals with a caffeine intake of over 400 mg/day had the lowest risk.
Oh CC et al. Coffee, tea, caffeine, and risk of non-melanoma skin cancer in a Chinese population: The Singapore Chinese Health Study. J Am Acad Dermatol. 2019 Feb 4. [Epub ahead of print]