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May 10, 2006

Exercise Linked to Reduced Skin Cancer Risk

Topics: Health Issues

Exercise is known to have many benefits, but now you can add a new one - it could help protect against skin cancer, at least it's true in mice. But since these conclusions are based on laboratory studies on mice, and it isn't known if exercise also lowers the risk of skin cancer in humans.

Nonetheless, the study offers insight into a possible link between exercise, UVB-induced apoptosis, and weight:

(...) In a new study, two groups of mice were exposed to ultraviolet B (UVB) light, which is known to cause skin cancer. The group that had a running wheel developed 32 percent fewer tumors. The tumors developed more slowly and were smaller than in the group that did not have gym access..

(...) Follow-up research not published in the journal indicates a possible reason for the difference. Exercise enhances a process called UVB-induced apoptosis, which means programmed cell death. This is a good thing: It kills sun-damaged cells.

(...) "While UVB is triggering the development of tumors, exercise is counteracting the effect by stimulating the death of the developing cancer cells," said study leader Allan Conney of Rutgers University.

(...) The new mouse study revealed another interesting result. The rodents that exercised more (also had reduced body fat), so the scientists now see a possible link between lower body fat and fewer tumors.

Read more ...

Posted by Richard at May 10, 2006 3:57 PM



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