For people diagnosed with cancer, the risk of cancer death falls as physical activity rises, according to a new analysis of more than 70 existing studies. Researchers found the same holds true for everyone supporting the current World Health Organization recommendation of moderate physical activity to combat the risk of chronic disease. The WHO recommends two and a half hours of moderate exercise per week for some health benefit and five hours of moderate exercise per week for additional benefit.
Half as much time per week of vigorous physical activity, like running, may confer the same benefits. There are no specific recommendations for physical activity levels to combat cancer risk, although more activity has been tied to lower risk of death from breast, colorectal and prostate cancers, the authors note. “Our results might help to update the recommendation concerning the advisable…