A longitudinal (18 year) study published by The Endocrine Society and funded by the National Institute on Aging and the American Heart Association stated that men over 50 may not live as long if they have low testosterone. The study looked at death from any cause in nearly 800 men ages 50 to 91 years who were living in a southern California community and who participated in the Rancho Bernardo Study in the 1980s. At the beginning of the study, almost one-third of these men had suboptimal blood testosterone levels for men their age. The men with low testosterone levels had a 33 percent greater risk of death during the next 18 years than the men with higher testosterone. This difference was not explained by smoking, alcohol intake, level of physical activity, or by pre-existing diseases such as diabetes or heart disease.[12]
The new study is the second report linking the deficiency of this sex hormone with increased death from all causes over time, said study author Gail Laughlin, PhD.
The new study is the second report linking the deficiency of this sex hormone with increased death from all causes over time, said study author Gail Laughlin, PhD.

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