Testosterone treatment to cure sexual dysfunction 'raises risk of blood clots by 63%'

Men may have an increased risk of blood clots after they start taking testosterone to treat sexual dysfunction, a recent study suggests.

In the first six months after starting testosterone, men have a 63 percent higher risk of clots in the legs and lungs than they did before beginning treatment, the study found.

While the absolute risk of a clot, known as a venous thromboembolism, is low and diminishes over time, men should still discuss it with their doctors, said lead study author Dr. Carlos Martinez of the Institute for Epidemiology, Statistics and Informatics GmbH in Frankfurt, Germany.

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