Caffeine plus exercise may help fight sunlight-caused skin cancer

It also prevents inflammation related to other obesity-linked cancers,says study.

Written by Agencies | Washington | Published: April 4, 2012 12:47 pm

Caffeine consumption coupled with some exercises may be able to ward off skin cancer caused by sun exposure and also prevent inflammation related to other obesity-linked cancers,suggests a new study.

“We found that this combination treatment can decrease sunlight-caused skin cancer formation in a mouse model,” said Yao-Ping Lu,Ph.D.,associate research professor of chemical biology and director of skin cancer prevention at the Rutgers Ernest Mario School of Pharmacy in Piscataway,N.J.

“I believe we may extrapolate these findings to humans and anticipate that we would benefit from these combination treatments as well,” Lu added.

The researchers evaluated the effects of caffeine and exercise on mice at high risk for developing skin cancer. Results showed that mice that took a dose of caffeine and exercised with a running wheel experienced 62 per cent fewer skin tumours. The volume of tumours also decreased by 85 per cent compared with the mice that did not consume caffeine or exercise.

Positive effects were found with either caffeine or exercise alone,but to a lesser extent. Researchers observed a 27 per cent reduction in tumours in caffeine-only mice and a 61 per cent reduction in tumour size. In the exercise-only mice,researchers found that tumour activity decreased by 35 per cent and tumour volume decreased by 70 per cent.

The researchers also found that exercise and caffeine reduced weight and inflammation. They fed mice a high-fat diet of omega-6 fatty acid-rich foods and measured the volume of the parametrial fat pad (the largest fat pad in a mouse) after two weeks of exercise and/or caffeine treatment.

Mice that had caffeine and exercised had a fat pad weight decrease of 63 per cent. Caffeine-only mice had a 30 per cent decrease,and exercise-only mice had a 56 per cent decrease. Development and size of cancer decreased as well.

The link,Lu believes,is inflammation,which dropped as much as 92 per cent in mice that exercised and consumed caffeine.

Lu presented the findings at the AACR Annual Meeting 2012,held March 31-April 4.

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