| Testosterone Information |
Edward Lichten, M.D.,PC |
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OVERVIEW:
Is there a Male 'Menopause?'
"Although women authors including Gail Sheehy and Susan Rako, M.D. have described this deficient testosterone state in men, almost no one talks about it and almost no one does anything about it," states Dr. Lichten. "When I experienced the 'hot flashes' at 48 years of age
tnat would wake me with night shirts soaking wet, no one suggested to me to measure my hormones. They said male 'menopause' was an illusion!"
"And I found not only relief from night sweats,
"I do not think that I am the only 50+ year old male Background Information: Testosterone is recognized as the hormone of puberty: it makes muscles for boys and turns them into sexually functional men. But as men age, testosterone's effect regulates muscle development and skin and penile turgor. The decreases in testosterone experienced with time can have profound effects on a man's health. The normal range of testosterone is reported as 350- 1200ng/dl. Studies in the 1940's showed the average testosterone level to be at 700 ng/dl, 300 ng/dl higher than for men today. In the past, a drop in testosterone levels to 250 ng/dl was rarely reported before men were 80 years of age. Yet today, it is not an uncommon value for middle aged men! Testosterone levels are highest in the early twenties. The decrease in serum levels is now occurring at an even earlier age. Up to 50% of all men at 40 now have testosterone levels below what was considered the normal range of 450 ng/dl. Recent studies imply that the pesticides and preservatives in foods and the hormone pellets to fatten up cattle, pork and chicken act as "hormonal disruptors." Based on the low sperm counts, infertility, obesity and low serum testosterone seen in younger men, I fear this is true.
Physiology:
Detecting Insufficient Testosterone Levels: With 80 percent of the baby boomers showing decreased levels of testosterone by 50 years of age, testosterone deficiency is a major unrecognized health problem.
Self Diagnostic Quiz
The Laboratory Test: Detecting the Problem
Testing is easily accomplished, once the decision is made. The blood test measures the serum levels of testosterone and the 'free' testosterone as well. Deficiency is denoted by a
testosterone serum level below 350 ng/dl. The blood sample should be draw in the morning because there may be significant variation depending on stress at work, exercise, or other hormonal therapy (such as DHEA, thyroid, growth hormone].
Free testosterone measurements are reported differently by different
laboratories
Lastly, measurements of FSH (follicle stimulating hormone) and LH (luteining hormone) are elevated in
more men than ever considered: I find them elevated in 50% of the men with complaints of "andropause." Normal values are less than 5; often much less.
Ongoing Research
Research in our facility is now focusing on the increased role estrogens have in the aging male. Elevated levels of estrogens are associated with central obesity, gynecomastia and increased cardiovascular mortality. The physiology of estrogen in the aging male may be treatable with new drug therapies that lower estrogen and sex hormone binding globulin. In the future, physicians may be able to maintain a man's virility well into his 90's by modifying his hormone balance!
The Prostate Examination:
Before starting testosterone replacement, the man needs to have a PSA (prostate specific antigen) blood test. Values that are raised are followed by a PSA II test that may identify prostatic hypertrophy. Testosterone replacement is absolutely contraindicated in men with prostate cancer
until cleared by a urologist..
Men should repeat this prostate and PSA testing every six months or as directed by their physician.
Treatment Alternatives:
Since in healthy young men, testosterone is secreted all day long with a peak in early morning, the ideal replacement would follow this pattern. There are two common delivery mechanisms for testosterone: oral and parenteral. Parenteral refers to through the skin or injections.
The pharmaceutical companies tried to avoid this liver-toxicity issue by inventing the testosterone patch. One company, Alza Corporation, produced a scrotal patch called Testoderm®.
The individual applied the patch to a shaved scrotum and it delivered 2.5-4 mg of testosterone. It is somewhat awkward and uncomfortable.
The best delivery system, used most often since the 1940's has been intramuscular injections of testosterone. There are five injectable testosterone approved in the United States: Aqueous Testosterone: very short acting (1-2 days)
Testosterone Cyprionate: short acting (2-4 days)
Testosterone Proprionate: short acting (2-4 days)
Testosterone Enthanate: longer acting (3-5 days)
Deca-Durabolin: longer acting, offering superior muscle pain relief (4-5 days)
Physicians once mixed two or three of these to get a longer and mixed effect. With the short acting testosterones, some men will feel a rush due to the unnaturally high levels for a few days. Occasionally, they may become more aggressive and experience fluctuations in mood, energy and sexual function. But reduction of the dose and education are usually sufficient to modify his behavior.
Some compounding pharmacists will make testosterone gel in 3-10% solutions. This works similarly to the patch, but is applied twice daily. More rapid absorption occurs over thin skin (scrotum, face) while slower absorption occurs over the abdomen. This is aqueous testosterone-- do not use methyl -testosterone as it has liver toxicity effects.
However, we feel the best long-term delivery system for high daily levels of testosterone is the
mixture of testosterone with a medium to slow absorption to 7-10 days. Studies in the United States, Europe and the Far East show that
testosterone pellets can maintain a
stable hormonal level for up to 35 days. Although there is individual variation
per patient, this delivery system has been the easiest for men to accept when
long term replacement is indicated. This is the method previously most often used in our office.
However, the increased price now to $60 per 75mg pellet makes it infrequently
used. The increased aromatization to estradiol and the increase in Sex Hormone
Binding Globulin negate many of the benefits. With the release in 2011 of Nebido,
a 3-month testosterone pellet, we expect the sales of Testopel from Slate
pharmaceutical to fall precipitously.
Additional Steps to Be Taken:
Risks of Low Testosterone: heart disease and myocardial infarction
Ongoing Research
Conclusion:
references:
Edward Lichten, M.D., F.A.C.S. Textbook of Bio-Identical Hormones.
Foundation for Anti-aging Research, LLC. 2007. pages 207-268
Malcolm Carruthers, M.D. Male Menopause: Restoring Vitality and Virility. HarperCollins Publishing. London, England. 1996, p.132
Eugene Shippen, M.D. Testosterone Syndrome: The Critical Factor for Energy, Health, & Sexuality-- Reversing the Male Menopause. M. Evans & Co., New York, 1998.
updated: June 26, 2009 |
Are you Testosterone Deficient? Tom's video interview St. Louis A list of questions to help you understand how testosterone deficiency affects you. And to urge you to get appropriate laboratory testing. 1 and 2 or any 4 answered as 'yes' is Testosterone deficient!
Medical References
1 in 7 men with low Testosterone harbor
Prostate Cancer .
Morgentaler A,Rhoden EL |
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