More than one million people will be diagnosed with skin cancer this year and you might be surprised to see how young many of them are.
"I've seen melanoma in a 16-year-old young woman and that's always very alarming," says Dr. Catherine Hoffman, a dermatologist.
Dr. Hoffman says you might assume girls are more likely to suffer sun damage, but she says teenage boys are most at-risk of skin cancer because they often go shirtless in the summer and are less likely to wear sunscreen.
Dr. Hoffman says in general, people aren't using enough sunscreen. The average person should lather on about a spoonful of sunscreen every day.