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Hormone therapy no cure-all for 'low T' in aging men - Medical Xpress

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AHA news: hormone therapy no cure-all for 'Low T' in aging men
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Testosterone therapy ads promise to help aging men recapture their vitality, decrease body fat and enhance libido. But hormone treatments—while medically necessary for some men—aren't meant to be a fountain of youth, and experts warn more research is needed to determine if such therapy could boost heart disease risks.

Testosterone levels naturally decline in most men as they age. This decline is generally mild, and symptoms often are nonspecific, such as low energy, reduced muscle mass and reduced vigor. Roughly 20% of men over the age of 60 have experienced a drop in , though this gradual decline can begin as early as the mid-30s.

While that can be frustrating, experts say it's not a clinical indication of a need for testosterone , nor is there any evidence that therapy is effective for treating those symptoms. The Food and Drug Administration has limited approval of testosterone therapy to the treatment of organic hypogonadism, a dramatic drop in testosterone caused by disease or injury of the hypothalamus, pituitary gland or the testes.

"If testosterone therapy is used appropriately in men with organic hypogonadism, then there is no controversy," said Dr. Shehzad Basaria, associate director of Men's Health: Aging and Metabolism at Brigham and Women's Hospital in Boston. The condition causes specific symptoms such as decreased sexual desire, breast enlargement, testicular atrophy and hot flashes.

But "in middle-aged and aging men who have a slightly lower testosterone level and nonspecific symptoms due to aging or obesity, testosterone therapy is not indicated. Similarly, testosterone is not a rejuvenation drug," said Basaria, an associate professor of medicine at Harvard Medical School. "The majority of patients seen in our clinics have symptoms such as fatigue, weight gain, muscle loss or feeling sad. These symptoms are common and nonspecific, and testosterone therapy is generally not indicated in such clinical scenarios."

Over the past two decades, intense direct-to-consumer marketing of hormone therapy for aging men, much of it via television ads, has more than doubled its off-label use. It's a trend experts warn is medically unwarranted and potentially harmful.

The American College of Physicians, which issued new guidelines in January, recommends against prescribing testosterone therapy to boost energy, vitality or physical function, but supports its use for men experiencing sexual dysfunction. The recommendation calls for discussing potential benefits and risks with the patient and discontinuing treatment after one year if there is no improvement.

"I think one of the biggest concerns about testosterone therapy is whether it is really needed," said Dr. Robert Eckel, professor of medicine and an endocrinologist at the University of Colorado School of Medicine in Aurora, Colorado. "Erectile dysfunction is a common problem as men age, but there can be other reasons for this, such as vascular disease or nerve damage, which is more common in patients with diabetes. It is not necessarily an indication for treatment with testosterone therapy. The patient must be properly evaluated."

The FDA warns against prescribing for age-related hormonal decreases or anything other than a medical diagnosis of hypogonadism. Since 2015, it has required testosterone product labels to warn of a possible increased risk of heart attacks and stroke.

But research about that association so far is unclear, Basaria said.

"Some studies have reported higher cardiovascular risk with use but there are an equal number of studies showing that it does not increase cardiovascular risk," he said. "This discrepancy exists because no study published to date has been powered to assess cardiovascular events as the primary outcome."

Eckel, president of medicine and science for the American Diabetes Association and a past president of the American Heart Association, agreed. "The cardiovascular disease outcome story is not convincing one way or another. I think to make a strong statement here would be a mistake."


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American College of Physicians issues guideline for testosterone treatment in adult men

American Heart Association News covers heart and brain health. Not all views expressed in this story reflect the official position of the American Heart Association. Copyright is owned or held by the American Heart Association, Inc., and all rights are reserved. If you have questions or comments about this story, please email editor@heart.org.

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