Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started
My Medicine

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

50+: Live Better, Longer

Font Size

Testosterone Decline: Not Inevitable With Age?

Researchers Find Age Does Not Affect Testosterone in Healthy Men
WebMD Health News
Reviewed by Laura J. Martin, MD

June 7, 2011 -- Testosterone decline is not inevitable with age, according to Australian scientists. Older men in excellent health can maintain their hormone levels, they say.

''What we found was, when you consider all the possible influences, age had no effect on testosterone levels in these very healthy men," says researcher David Handelsman, MD, PhD, director of the ANZAC Research Institute at the University of Sydney.

''By itself, age does not cause a lower testosterone in healthy men," he tells WebMD. "It's more likely that lowering of testosterone is a consequence of illnesses men acquire as they get older, like cardiovascular disease and obesity."

Handelsman presented his findings at The Endocrine Society's annual meeting in Boston.

However, a U.S.-based expert says the men in the study were ''super selected." They represent only a small portion of the aging male population.

The Healthy Man Study

Handelsman and his team looked at 325 men, all over age 40 and ranging from 40 to 97. They were enrolled in the Healthy Man Study in Australia.

All self-reported excellent health. They had no symptoms. The men's average body mass index (BMI) was 26; BMI below 25 is deemed healthy.

Those who took medications that affect testosterone were excluded.

The researchers took nine separate blood samples over a period of three months. They evaluated testosterone levels. Previous studies have looked at a single time point, Handelsman says.

"Their levels did not change over the three months," he says. More importantly, when the researchers looked at the entire sample of 325 men, even with the large age range, levels did not differ.

"Age alone does not make you testosterone deficient," Handelsman says.

If a man is found to have testosterone decline, he says, he and his doctor should look for underlying health problems that could be contributing.

The study was funded by the Medical Benefits Fund Foundation in Sydney. It is part of the private health insurer Bupa. Handelsman says Bupa had no input in the study.

Expert Disagrees

"He found men at one end of the spectrum," says Irwin Goldstein, MD, director of San Diego Sexual Medicine at Alvarado Hospital, San Diego. He reviewed the study findings for WebMD but was not involved in the study.

Today on WebMD

Eating for a longer, healthier life.
woman biking
How to stay vital in your 50s and beyond.
womans finger tied with string
Learn how we remember, and why we forget.
man reviewing building plans
Do you know how to stay healthy as you age?
fast healthy snack ideas
how healthy is your mouth
dog on couch
doctor holding syringe
champagne toast
Two women wearing white leotards back to back
Man feeding woman
two senior women laughing