Tina Miller, 46, always worshipped the sun. "I used to go to tanning salons, and planned my vacations where I could lie out on the beach," she says.
But three years ago, she was diagnosed with melanoma, the deadliest form of skin cancer.
"I never thought it would happen to me." But it did -- and will to nearly 74,000 Americans this year, according to the American Cancer Society.
And "once you've had one skin cancer, you're at risk for developing more," says Janet C. Lin, MD, a dermatologist at...