Energetic Exercise May Sharply Cut Risk of Lethal Prostate Cancer

Energetic Exercise May Sharply Cut Risk of Lethal Prostate Cancer
In a recent study published in the Journal of the National Cancer Institute, a team of researchers followed thousands of midlife and older men for over 20 years and found that dynamic exercise and other healthy lifestyle behaviors  may reduce the likelihood of their developing a lethal type of prostate cancer by up to 68%. The majority of prostate cancers are not life-threatening. However, a minority of patients are diagnosed with aggressive prostate cancers that metastasize to the bone and other body organs, eventually leading to death. Several lifestyle factors have been associated with the risk of lethal prostate cancer, but little is known about their combined effect. In the study titled “Development and Application of a Lifestyle Score for Prevention of Lethal Prostate Cancer,” Stacey Kenfield, ScD, from the University of California, San Francisco, and a team of researchers at UCSF and Harvard, retrieved and analyzed data from records of two studies conducted in the United States: the Health Professionals Follow-Up Study that followed 42,701 men, age 40 to 75 years, from 1986 to 2010; and the Physicians' Health Study that followed 20,324 men, age 40 to 84, from 1982 to 2010. The team developed a score to examine the consequences of lifestyle behaviors based on the results of the health professionals study, then applied this score to the physicians' study. One point was given for each positive answer to queries concerning regular practice of intense exercise, high consumption of tomatoes, consumption of fatty fish, low consumption of processed meat, body mass index (BMI) below 30, and non-smoking status for at least 10 years. To lessen statistical error, all participants were required to be free of diagnosed cancer at study's start and a four
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