Via AFP:

US federal regulators said Friday they were investigating products containing testosterone after recent studies suggested a higher risk of strokes and heart attacks in men being treated with the hormone.

The Food and Drug Administration stressed, however, that it has "not concluded that FDA-approved testosterone treatment increases the risk of stroke, heart attack or death."

"FDA is providing this alert while it continues to evaluate the information from these studies and other available data," it said in a safety alert, referring to two related studies.

Patients undergoing testoster...