Most skin cancers are preventable. To help protect yourself, follow these skin cancer prevention tips offered by MayoClinic: * Avoid the sun during the middle of the day. For many people in North America, the sun’s rays are strongest between about 10 a.m. and 4 p.m. Schedule outdoor activities for other times of the day, even in winter or when the sky is cloudy. You absorb UV radiation year-r...