Ignacio Escallon, an avid cyclist, knew something was wrong when he felt unusually tired.

With the calendar hitting May and summer quickly approaching, that means sales of sunscreen will be ratcheting up with beach weather hitting its peak season.

While it may help prevent sunburns, sunscreen with an SPF below 15 provides no protection from skin cancer or wrinkles. SPF 30 filters out about 97% of harmful UVB rays, SPF 50 blocks about 98%, and SPF 100 can protect you from 99%. Sunscreen tipsWear SPF 30 or higher sunscreen every day. Sun protection for babies and childrenProtecting the skin as a child and teenager can significantly reduce the risk of skin cancer and premature skin aging as an adult. The Food and Drug Administration advises that babies younger than 6 months do not wear sunscreen, but rather stay out of the sun altogether or wear with clothing with UPF (Ultraviolet Protection Factor) built in.

Overall cases of melanoma increased from 2001 to 2015, the study said, especially among people 40 and older. Researchers analyzed data from nearly 1 million cases of invasive melanoma for the study, published Wednesday in the medical journal JAMA Dermatology. Melanoma is the fifth most common cancer in the United States, and linked to more than 9,000 deaths a year in the United States, the study said. The study said young adult women appeared to have twice the risk of melanoma as young adult men. Despite the rising number of melanoma cases overall, there are positives, the study noted, including new therapies over the last several years that have improved survival outcomes for patients with spreading melanoma.