Sunday, February 12, 2012

Skin Cancer

Skin cancer is the most common form of cancer in humans, and it affects millions of people worldwide every year. This cancer is caused by excessive exposure to sunlight, radiation, carcinogens, and aging. There are three types: basal cell carcinoma, melanoma and squamous cell carcinoma. All three pose a serious risk to health, but melanoma is the most dangerous. Skin cancer is relatively easy to