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Scientists have long known there is a link between exercise and health.  Even the connection between exercise and breast cancer has been well established. Early studies showed that women who exercised like mad were able to reduce their risk of breast cancer. This was because they exercised to the point where their estrogen production was slowed or stopped, reducing the possibility of estrogen imbalance in the body. This information was not too useful for most women who had neither time nor inclination to exercise like professional athletes. But now there is good news for everyone. Recent studies have shown that even moderate exercise has a profound effect on breast cancer prevention and prognosis, and a positive effect against death for all causes.

Exercise reduces risk of death from all causes

A study from the University of Copenhagen in Denmark studied inflammation as a key player in the development of degenerative diseases such as breast cancer, colon cancer, cardiovascular disease and diabetes.  Given that regular exercise offers protection against all causes of mortality through its ability to protect against insulin resistance, the scientists suggested that exercise may exert some of its beneficial effects by inducing anti-inflammatory cytokines, which they have labeled myokines ... These scientists suggest that skeletal muscle qualifies to be an endocrine organ, and myokines may be involved in promoting beneficial effects against all degenerative diseases associated with inflammation, including cancer.