A new study in mice suggests that exercise and caffeine might reduce the risk of skin cancer. Investigators exposed mice to ultraviolet B radiation, the wavelength in sunlight that triggers skin cancer in humans. The animals that were allowed to exercise and also received caffeine in their water had the fewest skin cancers. The reduction of 62 percent was substantial. Tumor size and activity were also reduced. The scientists believe that both exercise and caffeine are helpful in reducing inflammation that may trigger and feed cancer growth.
[American Association for Cancer Research (AACR) Annual Meeting 2012]