A new paper from the Yale School of Public Health shows a correlation that suggests that drinking four or more cups of coffee each day can reduce your risk of melanoma: http://jnci.oxfordjournals.org/content/107/2/dju421.full.pdf+html.
Another study in the New England Journal of Medicine a few years ago showed that drinking coffee reduces your chances of death! http://www.nejm.org/doi/pdf/10.1056/NEJMoa1112010.
Daily Dermatology 