'Being physically active during leisure time may lower a person’s risk of certain cancers, according to a new study.
A high level of physical activity was associated with a 20% lower risk of myeloid leukemia, a 17% lower risk of myeloma, a 9% lower risk of non-Hodgkin lymphoma, and a 7% lower risk of cancer in general.
On the other hand, a high level of physical activity was also associated with a higher risk of malignant melanoma and prostate cancer.
Steven C. Moore, PhD, of the National Cancer Institute in Bethesda, Maryland, and his colleagues reported these findings in JAMA Internal Medicine. (Abstract: archinte.jamanetwork.com/ar... )
The researchers pooled data from 12 US and European study cohorts with self-reported physical activity (1987-2004). And they analyzed associations between physical activity and 26 types of cancer.
The study included 1.4 million participants, and 186,932 cancers were identified during a median of 11 years of follow-up.'
Overview from Hematology Times (free registration)
There was a strong inverse associations (a 20% or greater reduction in risk) for 7 cancer types and moderate inverse associations (a 10% to 20% reduction in risk) between the highest level of activity and 6 cancers and '...there were suggestive inverse associations between the highest level of activity and 3 cancers:
Non-Hodgkin lymphoma (HR=0.91 [95% CI, 0.83-1.00])'
CLL is one of the more common Non-Hodgkin Lymphomas.
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