Traverse City Record-Eagle

Body & Soul

September 14, 2013

Estrogen may play a role in 'male menopause'

The Associated Press

TV ads tout testosterone treatments for “low T,” but surprising new research shows a different hormone may play a role in less sex drive and more fat as men age. Estrogen — the female hormone — is needed by men, too, and the study gives the first clear evidence that too little of it can cause certain “male menopause” symptoms.

“A lot of things we think are due to testosterone deficiency are actually related to the estrogen deficiency that accompanies it,” said Dr. Joel Finkelstein of Massachusetts General Hospital. He led the U.S.-government funded study, which appears in Thursday’s New England Journal of Medicine.

Testosterone is the main male sex hormone. Men’s bodies convert some of it into estrogen, and levels of both decline with age. Until now, there was no way to tell which hormone was responsible for complaints of diminished libido, strength and energy.

Millions of men have been prescribed testosterone gel, patches or shots for these problems, but it’s not known how much they need or whether this hormone replacement therapy is good, bad or neutral, Finkelstein said. Doctors don’t usually prescribe estrogen to men; the way to remedy low estrogen is to give them testosterone and let the body convert it.

The study didn’t test hormones as therapy, but explored which ones had which effects. It involved 400 healthy male volunteers, ages 20 to 50, who were given monthly shots of a drug to temporarily reduce their testosterone production to pre-puberty levels. They were then given various doses of testosterone gel or a dummy gel to use. Half also were given another drug to prevent testosterone’s conversion into estrogen.

Designing the study this way allowed researchers to compare the effects of different levels of each hormone on things like strength and body composition.

Text Only

Facebook
Twitter Updates
Follow us on twitter
Associated Press Video
Bill Murray Continues To Be Just Bill Murray By Eating Some Free Bill Murray Ice Cream Deja vu: Another NYPD officer choke-holding a suspect Hillary Clinton Blamed Bill's Affair With Monica Lewinsky On Abuse He Suffered As A Child 'Fifty Shades of Grey': Watch the Super Sexy First Trailer Now! Reports: Ravens RB Ray Rice Suspended For 1st 2 Games Of The Season Chapter Two: Becoming a first-time director Air Algerie plane with 119 on board missing over Mali Diamond Stone, Malik Newman, Josh Jackson and others showcase talent Free Arturo - The World's Saddest Polar Bear A Look Back at Batman On Film Through The Years LeBron James -- Dropped $2k On Cupcake Apology ... Proceeds To Benefit Charity Snoop Dogg Says He Smoked Weed at the White House Raw: Fight Breaks Out in Ukraine Parliament Chris Pratt Interrupts Interview To French Braid Intern's Hair Shirtless Super Mario Balotelli Dances While Ironing - @TheBuzzeronFOX Whoa! Watch "Housewives" Star Do the Unthinkable LeBron apologizes to neighbors with cupcakes Justin Bieber In Calvin Klein Underwear Shoot Samsung Pre-Trolls The IPhone 6 With New Ad Jimmy Kimmel Introduces His Baby Girl