New York: In the ongoing saga of testosterone and male aging, a new report concludes that low levels of the sex hormone might raise men`s risk of dying from heart disease.Researchers followed more than 3,600 elderly men living on their own for about five years on average. Over that time, about six percent died due to heart disease, with men who had low levels of so-called free testosterone leading the pack.The results add to a confusing tangle of data. Some show low testosterone levels -- sometimes called low T -- are linked to earlier deaths, including those due to heart disease, while other data don`t.Pharmaceutical companies are also promoting testosterone therapy for problems like grumpiness, lack of energy and decreased libido, whose connection with the hormone is still unclear.The main problem in this area -- the question of causation versus correlation -- is one that also mars the new report, according to Dr. Frederick Wu, who wasn`t part of the study."Low T is associated with poor health," Wu, a hormone expert at the University of Manchester in the UK, told Reuters Health by email. "But it does not mean that low T is the cause of poor health or increased mortality."
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