erectile dysfunction

Erectile dysfunction drugs and skin cancer — should you worry?

A study published in JAMA Internal Medicine this week found that men who used the erection-enhancing drug sildenafil (Viagra) were 84% more likely to develop melanoma, the most dangerous form of skin cancer, over a period of 10 years. That finding makes for an attention-grabbing headline. But it doesn’t tell the real story—that the study found an association (not cause and effect), that this hasn’t been seen in other studies of men, and that, even if it holds true, the absolute increase is small, from 4.3 cases of melanoma for every 1,000 men who didn’t take Viagra to 8.6 of every 1,000 men who took it. The take-home message is that it’s important to worry about melanoma—which is largely caused by getting too much sun—but not yet about Viagra and melanoma.