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.

Although it is too premature to conclude that FDA-approved testosterone treatment increases the risk of stroke, heart attack or death, this underscores the importance of prudent use of testosterone replacement. Testosterone replacement can still be helpful, especially in men who are truly suffering from hypogonadism (a condition marked by low sex hormone). However its adverse effects cannot be neglected. It is best to consult a physician who is well versed with testosterone therapy, its adverse effects and means of monitoring the therapy, before embarking on such replacement.