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July 17, 2013

Exercise, Cancer, And Telomeres

Exercise, Cancer, and Telomeres

Next to nutrition exercise is our best medicine. Most of us are aware of its health benefits on the cardiovascular, musculoskeletal, and metabolic systems. But exercise has two other benefits that are being studied more and more. This includes the benefits of exercise on cancer and its benefits on telomere health. So that is what we going to tackle today – exercise, cancer, and telomeres. Exercise protects against cancer and protects telomeres. Short telomeres are associated with higher risks of cancer.

Exercise Strengthens the Immune System

A critical step in the development of cancer involves the malfunctioning of the immune system which is designed to eliminate foreign invaders in the body including bacteria, viruses, and abnormal cells – cancer cells.

T-cells represent some of the body’s immune protectors against infections and cancer.

A recent study showed that cancer survivors who exercised for 12 weeks after completing chemotherapy developed more effective T-cells against cancer and infections.

T-cells become senescent (old) following chemotherapy, but exercise seems to protect against this. In essence, exercise improves the number of functional T-cells following chemotherapy. Though chemotherapy destroys cancerous cells it also weakens the immune system – one reason why cancer survivors many times are at risk for other cancers. Exercise reduces the risks for second cancers and that may be related to enhance T-cell function.

Exercise and Telomeres

Recent studies from the University of California – San Francisco (UCSF) show that psychological stress shortens telomeres – the very biologic markers of aging. Short telomeres are associated with a wide range of chronic diseases. Short telomeres are associated with higher levels of inflammation and exercise provides anti-inflammatory benefits.

Based on one of UCSF’s studies it appears that exercise diminishes perceived stress thus diminishing its impact on telomere shortening. A second UCSF study showed that non-exercising women with a history of childhood abuse were more likely to have shorter telomeres. In fact, there was no link between childhood abuse and telomere length in women who exercised regularly.

The reasons why exercise protects telomeres isn’t entirely clear, but some of its protective effects are likely to be related to the anti-inflammatory properties associated with exercise.

See related articles.

Minimizing Side Effects of Cancer Treatment With Exercise

Exercise And Cancer

Telomeres: A Key To Longevity






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Dr. Joe Jacko

Dr. Joe is board certified in internal medicine and sports medicine with additional training in hormone replacement therapy and regenerative medicine. He has trained or practiced at leading institutions including the Hughston Clinic, Cooper Clinic, Steadman-Hawkins Clinic of the Carolinas, and Cenegenics. He currently practices in Columbus, Ohio at Grandview Primary Care. Read more about Dr. Joe Jacko

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