Benefits of Exercise on Prostate Cancer Risk May Vary by Race02/11/13
MONDAY, Feb. 11 (HealthDay News) -- Among white men, exercise
may cut the risk of developing prostate cancer, and it may also
lower the odds of aggressive disease in those who already have the
cancer, a new study indicates.
However, those benefits were not seen in black men, Dr. Lionel
Banez, of the Durham Veterans Affairs Medical Center in North
Carolina, and colleagues reported in the Feb. 11 online edition of
For the study, the researchers asked 164 white men and 143 black
men undergoing a prostate biopsy about their exercise habits. White
men who were moderately or highly active were 53 percent less
likely to be diagnosed with prostate cancer than those who were
mildly active or inactive.
But the investigators found no association between exercise
levels and prostate cancer risk in black men, they noted in a
journal news release.
And of the men who were diagnosed with prostate cancer, those
who exercised were 13 percent less likely to have an aggressive
form of disease that was likely to grow quickly and spread.
However, when the researchers looked at this finding based on race,
it remained significant in whites but not in blacks.
Previous research has shown that black men are more likely than
white men to develop prostate cancer and to die from the disease,
the study authors noted.
These new findings that black men may not benefit from exercise
the way white men do could help explain why blacks are at greater
risk for prostate cancer and aggressive prostate cancer, Banez
Further research is needed to learn why exercise might help
protect white men but not black men, he pointed out in the news
release. And although the study found an association between
prostate cancer and exercise in white men, it did not prove a
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