Exercise can lessen the chances of breast cancer spreading.
For women who have recovered from breast cancer, exercise appears to be the most important lifestyle choice to reduce the risk of death from a relapse.
Around a quarter of all women with breast cancer will eventually die when the cancer spreads to other parts of the body. But living more healthily can reduce the risk of this happening.
To find out what lifestyle changes might have the greatest benefit, Ellen Warner and Julie Hamer of Sunnybrook Health Sciences Centre in Toronto, Canada, analysed 67 studies that examined factors such as diet, exercise and weight, and their effect on the health of women who had been successfully treated for breast cancer.
It is hard to isolate why exercise confers such benefits, says Warner, but one possible explanation is that it suppresses inflammation that could otherwise damage cells and increase the risk of cancer spreading.
One potential problem with the study is that the women decided how much exercise to do, but those with undetected secondary cancers might have been too tired or in too much pain to exercise, skewing the apparent benefit of exercise on the death rate, says Anne McTiernan of the Fred Hutchinson Cancer Research Center in Seattle, Washington. “A randomised trial, with women assigned at random to an exercise or control group then followed over time, would be very helpful,” she says.
|Read Full Article: Exercise reduces death from breast cancer relapse by 40 per cent | New Scientist|