The prevalence of melanoma, the deadliest form of skin cancer, is growing in the US.
The trend is a bit perplexing. Scientists have a thorough understanding of how ultraviolet radiation from the sun damages the skin and acts as a carcinogen—and, more importantly, we have an affordable, easy-to-obtain solution. Modern sunscreens that protect against both ultraviolet-A (longer UV rays that cause the skin to produce more melanin, aging the cells in the process) and ultraviolet-B (shorter UV rays that primarily cause genetic damage to skin cells) rays has been around since the 1970s (paywall). We have the knowledge and means to protect ourselves from the sun—so why are rates of melanoma still going up in the US?