The Sunscreen-and-Melanoma Link, One More Time for the People in the Back

Yes. People with darker skin get skin cancer less often but are frequently diagnosed later, when it's harder to treat — and melanoma can appear in less sun-exposed areas like the palms, soles and under the nails. Everyone, regardless of skin tone, should use sun protection and watch for changes.

Evidence indicates yes. In the landmark Australian Nambour trial, adults using sunscreen daily had fewer melanomas — with a statistically significant reduction in invasive melanoma — than those using it at their discretion. Regular broad-spectrum use, alongside shade and clothing, lowers skin-cancer risk.

Watch for the ABCDEs: Asymmetry, irregular Borders, uneven Color, Diameter over about 6 mm, and Evolving (changing) spots. Also note any 'ugly duckling' mole that looks different from your others, or a sore that won't heal. See a dermatologist promptly about anything new or changing.