Epidemiological studies involving diet and prostate cancer have concentrated on the role of fat and the role of carotene. The fat hypothesis is that a high intake of total fat, animal fat or animal products will increase the risk of prostate cancer. Studies involving this hypothesis have produced inconsistent results. The carotene hypothesis stated that a high intake of carotene would decrease the risk for prostate cancer. Results from these studies have not provided evidence for an association between carotene intake and prostate cancer risk.
Skin cancer is the fastest growing cancer in the United States.
Skin cancer does not cause many deaths, not like the three main cancers in the U.S. - lung, breast and colorectal cancers. The major cause of skin cancer is excess exposure to the sun, in the form of ultraviolet light. It is believed that skin cancer occurs more frequently among white people than black people because the greater pigmentation of dark skin protects them against the sun s radiation. Death from skin cancer is mainly from melanoma. Basal cell carcinoma and squamous cell carcinoma are very dose dependent and time of exposure dependent.