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Skin Cancer Prevention

Where Melanoma Hides: The Spots You're Not Checking

Scalp, soles, nails, between the toes: the zones that are easy to miss.

By the numbers

Invasive melanoma diagnoses rose ~46.6% over the decade 2016-2026 (Skin Cancer Foundation).

Five or more sunburns roughly doubles a person's lifetime risk of melanoma.
What the evidence actually says — Green AC et al., J Clin Oncol 2011;29(3):257-263 — Nambour sunscreen trial

Questions we get a lot

Can sunscreen prevent skin cancer?

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.

What are the early warning signs of melanoma?

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.

How often should I get a skin check?

Examine your own skin about monthly, and see a dermatologist for a professional check at least yearly — more often if you have many moles, fair skin, a history of sunburns or skin cancer, or a family history. Early detection makes melanoma highly treatable.

What people keep asking

r/SkincareScience: 'Does sunscreen actually lower skin cancer risk, or is that marketing?'

Sources & citations

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