Medicine
A good number of new patients to my practice are older men whose previous physicians have retired. More and more often, I've noticed while reviewing records from previous physicals that they have had their testosterone levels checked - usually without any documented rationale for doing so. In two Pro-Con editorials in the February 15th issue of American Family Physician, Drs. Joel Heidelbaugh and Adriane Fugh-Berman debate the merits and potential unintended consequences of screening for testosterone deficiency in older men. Dr. Heidelbaugh points out that observational studies have associated low serum testosterone levels with cardiovascular disease, cancer, impaired glucose tolerance, and metabolic syndrome. He further argues that symptoms of testosterone deficiency may be erroneously attributed to normal aging:
Although screening targets asymptomatic men, testosterone deficiency is unique because symptoms are not always well defined. This warrants casting a wider net to identify a treatable condition. Symptoms such as depression, fatigue, and inability to perform vigorous activity are related to low testosterone levels, whereas there is an inverse relationship between the number of sexual symptoms and testosterone levels.
These questions demonstrate how pharmaceutical companies use nonspecific symptoms to foster disease states and then convince physicians that these conditions are real. In this case, the disease state is marketed to consumers as Low T, and to physicians as late-onset hypogonadism.
Of observed associations between low testosterone levels and chronic diseases, Dr. Fugh-Berman counters that "association does not prove causation, and there is no reliable evidence that testosterone treatment improves any chronic disease."
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Medicine
Debating testosterone screening and therapy in older men
A good number of new patients to my practice are older men whose previous physicians have retired. More and more often, I've noticed while reviewing records from previous physicals that they have had their testosterone levels checked - usually without any documented rationale for doing so. In two Pro-Con editorials in the February 15th issue of American Family Physician, Drs. Joel Heidelbaugh and Adriane Fugh-Berman debate the merits and potential unintended consequences of screening for testosterone deficiency in older men. Dr. Heidelbaugh points out that observational studies have associated low serum testosterone levels with cardiovascular disease, cancer, impaired glucose tolerance, and metabolic syndrome. He further argues that symptoms of testosterone deficiency may be erroneously attributed to normal aging:
Although screening targets asymptomatic men, testosterone deficiency is unique because symptoms are not always well defined. This warrants casting a wider net to identify a treatable condition. Symptoms such as depression, fatigue, and inability to perform vigorous activity are related to low testosterone levels, whereas there is an inverse relationship between the number of sexual symptoms and testosterone levels.
On the other hand, Dr. Fugh-Berman raises concerns about overly aggressive marketing of testosterone supplements by pharmaceutical companies, such as online symptom surveys that seem designed to elicit "yes" answers from most older men.
These questions demonstrate how pharmaceutical companies use nonspecific symptoms to foster disease states and then convince physicians that these conditions are real. In this case, the disease state is marketed to consumers as Low T, and to physicians as late-onset hypogonadism.
Last September, an advisory committee to the U.S. Food and Drug Administration considered the potential cardiovascular risks for testosterone therapy and voted to exclude men with age-related testosterone declines from indications for testosterone use and to support performing additional studies to clarify cardiovascular harms. Whether clinical practice will evolve to reflect a similar level of caution is unclear. A 2013 analysis of a health insurance database showed that 25% of men prescribed a testosterone supplement never had a testosterone level checked, while other men with apparently normal levels nonetheless received therapy. At a minimum, family physicians who prescribe testosterone supplements should heed the Choosing Wisely recommendation to avoid these unsupported practices.
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This post first appeared on the AFP Community Blog.
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This post first appeared on the AFP Community Blog.
- Psa Screening: What Is The Value?
Two studies published in the New England Journal of Medicine on line on March 18, 2009 regarding the use of prostate-specific antigen (PSA) screening for prostate cancer have been getting a lot of coverage in the popular media, including NPR and the New...
- Is Vitamin D Supplementation Good For Anything?
For as long as I can remember, throughout medical training and clinical practice, the message from my mentors and colleagues about vitamin D supplements was the same: the sooner patients started taking them, the better to prevent osteoporosis and fractures...
- Vitamin D Screening: Few Pros, Many Cons
The U.S. Preventive Services Task Force recently announced its intent to review the evidence and issue recommendations about screening for vitamin D deficiency, after finding insufficient evidence to recommend routine supplementation for the prevention...
- Concerns About Calcium Supplements
Until recently, the idea that calcium-containing supplements, which more than half of older adults in the U.S. consume regularly, could be harmful would have seemed absurd. Primary care clinicians have long recommended calcium supplements to reduce the...
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Vitamin D seems to be all the rage in medicine these days. A family physician colleague commented to me last week that the laboratory test for vitamin D deficiency is becoming the most frequently ordered test in his practice. This clinical bandwagon is...