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Welcome to The T-Trial


JULY 22, 2011 - Fountain Of Youth For Men? Controversy Over Use Of Testosterone (read more...)

NIA announces participants sought for NIH-supported 12-site Testosterone Therapy study (read more...)




The National Institutes of Health (NIH) has launched a clinical research trial to determine if testosterone treatment of men aged 65 and older will help their walking, vitality, sexual function, memory, blood count, and cardiovascular risk. This trial, called The Testosterone Trial, or TTrial, will be conducted in 800 men in 12 cities across the United States.

Why is The Testosterone Trial being Conducted?

As men age their blood testosterone levels fall, and also they find it more difficult to walk, have less energy, have less interest in sex, have greater difficulty remembering, and tend to be anemic, as well as greater risk of cardiovascular disease. It is possible that low blood testosterone is a cause of these problems. The purpose of The Testosterone Trial is to determine if testosterone treatment of men who are 65 years and older – and who have a low blood testosterone and one or more of these problems – will improve them.

What Will Happen in The Testosterone Trial?

Men who are age 65 and older and have low blood testosterone may be eligible for this trial if they also have one or more of the following: difficulty walking a quarter of a mile, less interest in sex, or less vitality than they used to have.

Men who are interested will be tested by blood tests and questionnaires to see if they qualify. Men who qualify will be assigned to use either testosterone gel or placebo gel daily for one year. During this year men will be tested by questionnaires and blood tests to determine if their walking, interest in sex, energy, memory and blood count are getting better.

How Can I Learn More about The Testosterone Trial?

If you are interested in learning more about The Testosterone Trial, click on “Is This Trial for Me?” to the left.

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