Large Study Finds Testosterone Therapy Safe for Heart in Men with Low Levels, But Risks Remain

Prescription testosterone does not increase heart attack or stroke risk in men with low testosterone and symptoms, but it should only be used to treat diagnosed hormone deficiencies.
The treatment provides little benefit for healthy aging and should not be used without medical cause.
Testosterone therapy may increase risks of irregular heartbeat, blood clots, and kidney problems, though rare.
The long-term effects of testosterone therapy are still unknown, and more research is needed. Close medical monitoring of patients is required.
About 60% of men in the study stopped treatment before the end, highlighting the need for more data on long-term safety and effectiveness.