A study by researchers from the Harvard School of Public Health in the USA reports that men who drink coffee daily may reduce their risk of developing a lethal type of prostate cancer by up to 60%.

http://www.france24.com/en/20110517-coffee-cuts-risk-lethal-prostate-cancer-study,
http://www.nhs.uk/news/2011/05May/Pages/coffee-and-prostate-cancer-risk.aspx