27 (Xinhuanet) -- Researchers in Britain found men in the upper 25 percent of natural testosterone levels have a 41 percent lower risk of dying from heart attack, stroke and other cardiovascular conditions, cancer and all other causes, compared to men with the lowest levels.
"Low testosterone seems to predict increased risk of total mortality in cardiovascular disease as well as cancer," said Dr.
Kay-Tee Khaw,professor of clinical gerontology at the University of Cambridge School of Clinical Medicine in Britain, as quoted by media reports Tuesday.
The researchers tracked 11,606 British men ages 40 to 79 who had no known cancer or cardiovascular disease at the start of the study.
They joined the study from 1993 to 1997 and were followed until 2003.
Among these men, 825 died during the study period.
The researchers measured their testosterone levels using frozen blood samples provided earlier, and compared their levels to a group of men still alive at the end of the study period.Khaw said the relationship between testosterone levels and cardiovascular disease mortality was comparable in magnitude to well-established risk factors like high blood pressure and cholesterol levels.Khaw said the findings suggest that men with low levels of testosterone might be able to cut their risk of death with testosterone supplementation, but did not recommend doing this without more research backing up these results.(Agencies)
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