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Testosterone Therapy May Raise Heart Attack Risk

Researchers say risk doubles after treatment starts for men under 65 with heart problems and all men over 65
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WebMD News from HealthDay

By Kathleen Doheny

HealthDay Reporter

WEDNESDAY, Jan. 29, 2014 (HealthDay News) -- Testosterone therapy -- widely advertised as a way to help men improve a low sex drive and reclaim diminished energy -- might raise the risk of heart attack, according to new research.

The increased risk was found in men younger than 65 with a history of heart disease, and in older men even if they didn't have a history of the disease. In both groups, heart attack risk doubled in the 90 days after the men began testosterone therapy, said researcher William Finkle, CEO of Consolidated Research, in Los Angeles.

"It was more or less the same increase in risk," Finkle said.

Testosterone therapy typically is given in gel, patch or injection form, and is widely promoted in television advertisements about "low T." Although the treatment risk to men over 65 has been documented in previous research, Finkle said, the new study is believed to be the first to look at men under 65.

The study, published online Jan. 29 in the journal PLoS One, was conducted by a research team that included experts from Consolidated Research, the U.S. National Cancer Institute and the University of California, Los Angeles.

It was triggered by a 2010 report in the New England Journal of Medicine, Finkle said. In that study, a clinical trial of testosterone gel in men over 65 was halted early after an increase in heart attacks and other heart problems occurred in the group using the testosterone supplements.

Finkle's team used data from Truven Health Analytics, which gathers nationwide information on patient care. The researchers looked at the medical records of nearly 56,000 men who had been prescribed testosterone therapy -- more than 48,000 of whom were under age 65.

"We identified the [timing of the] first prescription and followed them for 90 days," Finkle said. The risk for heart attack doubled in that 90-day period for men over 65 and those under 65 with a history of heart disease, the researchers found.

When they continued to follow the men for another 90 days, the researchers said, the risk declined to the level it was at the study's start for men who did not refill their initial prescription.

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