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Does testosterone therapy work

How Effective is Testosterone Treatment

Low T Experts discuss the effectiveness of TRT Testosterone Replacement Therapy

The Effectiveness of Testosterone Therapy according to Abraham Morgentaler MD - Testosterone Expert

An interview with Abraham Morgentaler, M.D.

It could be said that testosterone is what makes men, men. It gives them their characteristic deep voices, large muscles, and facial and body hair, distinguishing them from women. It stimulates the growth of the genitals at puberty, plays a role in sperm production, fuels libido, and contributes to normal erections. It also fosters the production of red blood cells, boosts mood, and aids cognition.

Over time, the testicular machinery that makes testosterone gradually becomes less effective, and testosterone levels start to fall, by about 1% a year, beginning in the 40s. As men get into their 50s, 60s, and beyond, they may start to have signs and symptoms of low testosterone such as lower sex drive and sense of vitality, erectile dysfunction, decreased energy, reduced muscle mass and bone density, and anemia. Taken together, these signs and symptoms are often called hypogonadism (hypo meaning low functioning and gonadism referring to the testicles). Researchers estimate that the condition affects anywhere from two to six million men in the United States. Yet it is an underdiagnosed problem, with only about 5% of those affected receiving treatment.

Studies have shown that TRT testosterone replacement therapy may offer a wide range of benefits for men with hypogonadism, including improved libido, mood, cognition, muscle mass, bone density, and red blood cell production. But little consensus exists on what constitutes low testosterone, when testosterone supplementation makes sense, or what risks patients face. Much of the current debate focuses on the long-held belief that testosterone may stimulate prostate cancer.

Dr. Abraham Morgentaler, an associate professor of surgery at Harvard Medical School and the director of Men’s Health Boston, specializes in treating prostate diseases and male sexual and reproductive difficulties. He has developed particular expertise in treating low testosterone levels. In this interview, Dr. Morgentaler shares his views on current controversies, the treatment strategies he uses with his own patients, and why he thinks experts should reconsider the possible link between testosterone-replacement therapy and prostate cancer.

Low T Symptoms and Diagnosis

What signs and symptoms of low testosterone prompt the average man to see a doctor?

As a urologist, I tend to see men because they have sexual complaints. The primary hallmark of low testosterone is low sexual desire or libido, but another can be erectile dysfunction, and any man who complains of erectile dysfunction should get his testosterone level checked. Men may experience other symptoms, such as more difficulty achieving an orgasm, less-intense orgasms, a smaller amount of fluid from ejaculation, and a feeling of numbness in the penis when they see or experience something that would normally be arousing.

The more of these symptoms there are, the more likely it is that a man has low testosterone. Many physicians tend to dismiss these soft symptoms as a normal part of aging, but they are often treatable and reversible by normalizing testosterone levels.

Aren't those the same symptoms that men have when they're treated for benign prostatic hyperplasia, or BPH?

Not exactly. There are a number of drugs that may lessen sex drive, including the BPH drugs finasteride (Proscar) and dutasteride (Avodart). Those drugs can also decrease the amount of the ejaculatory fluid, no question. But a reduction in orgasm intensity usually does not go along with treatment for BPH. Erectile dysfunction does not usually go along with it either, though certainly if somebody has less sex drive or less interest, it's more of a challenge to get a good erection.

How do you determine whether a man is a candidate for testosterone-replacement therapy?

There are two ways that we determine whether somebody has low testosterone. One is a blood test and the other is by characteristic symptoms and signs, and the correlation between those two methods is far from perfect. Generally men with the lowest testosterone have the most symptoms and men with highest testosterone have the least. But there are some men who have low levels of testosterone in their blood and have no symptoms. Read more about Hormone Blood Testing.

Looking purely at the biochemical numbers, The Endocrine Society* considers low testosterone to be a total testosterone level of less than 300 ng/dl, and I think that’s a reasonable guide. But no one quite agrees on a number. It’s not like diabetes, where if your fasting glucose is above a certain level, they’ll say, “Okay, you’ve got it.” With testosterone, that break point is not quite as clear.

Free Testosterone vs Total Testosterone

Is total testosterone the right thing to be measuring? Or should we be measuring something else?

Well, this is another area of confusion and great debate, but I don’t think it’s as confusing as it appears to be in the literature. When most doctors learned about testosterone in medical school, they learned about total testosterone, or all the testosterone in the body. But about half of the testosterone that’s circulating in the bloodstream is not available to the cells. It’s tightly bound to a carrier molecule called sex hormone–binding globulin, which we abbreviate as SHBG.

The biologically available part of total testosterone is called free testosterone, and it’s readily available to the cells. Almost every lab has a blood test to measure free testosterone. Even though it’s only a small fraction of the total, the free testosterone level is a pretty good indicator of low testosterone. It’s not perfect, but the correlation is greater than with total testosterone.

Endocrine Society Testosterone Therapy Recommendations Summarized

This professional organization recommends testosterone therapy for men who have both

  • low levels of testosterone in the blood (less than 300 ng/dl)
  • symptoms of low testosterone (Andropause or Hypogonadism).

Therapy is not recommended for men who have

  • prostate or breast cancer
  • a nodule on the prostate that can be felt during a DRE
  • a PSA greater than 3 ng/ml without further evaluation
  • a hematocrit greater than 50% or thick, viscous blood
  • untreated obstructive sleep apnea
  • severe lower urinary tract symptoms
  • class III or IV heart failure.

Factors Effecting Testosterone Levels

Do time of day, diet, or other factors affect testosterone levels?

For years, the recommendation has been to get a testosterone value early in the morning because levels start to drop after 10 or 11 a.m. But the data behind that recommendation were drawn from healthy young men. Two recent studies showed little change in blood testosterone levels in men 40 and older over the course of the day. One reported no change in average testosterone until after 2 p.m. Between 2 and 6 p.m., it went down by 13%, a modest amount, and probably not enough to influence diagnosis. Most guidelines still say it’s important to do the test in the morning, but for men 40 and above, it probably doesn’t matter much, as long as they get their blood drawn before 5 or 6 p.m.

There are some very interesting findings about diet. For example, it appears that individuals who have a diet low in protein have lower testosterone levels than men who consume more protein. But diet hasn’t been studied thoroughly enough to make any clear recommendations.

Natural Testosterone Levels

Exogenous vs. Endogenous Testosterone

In this article, testosterone-replacement therapy refers to the treatment of hypogonadism with exogenous testosterone — testosterone that is manufactured outside the body. Depending on the formulation, treatment can cause skin irritation, breast enlargement and tenderness, sleep apnea, acne, reduced sperm count, increased red blood cell count, and other side effects.

Preliminary research has shown that HCG Human Chorionic Gonaditropin and clomiphene citrate (Clomid), a drug generally prescribed to stimulate ovulation in women struggling with infertility, can foster the production of natural testosterone, termed endogenous testosterone, in men. In a recent prospective study, 36 hypogonadal men took a daily dose of clomiphene citrate for at least three months. Within four to six weeks, all of the men had heightened levels of testosterone; none reported any side effects during the year they were followed.

Because clomiphene citrate is not approved by the FDA for use in men, little information exists about the long-term effects of taking it (including the risk of developing prostate cancer) or whether it is more effective at boosting testosterone than exogenous formulations. But unlike exogenous testosterone, clomiphene citrate preserves — and possibly enhances — sperm production. That makes drugs like clomiphene citrate one of only a few choices for men with low testosterone who want to father children.

Testosterone Drug Formulations

What forms of testosterone-replacement therapy are available for sale?

The oldest form is a steroid injection, which we still use because it's inexpensive and because we reliably get good testosterone levels in nearly everybody. The disadvantage is that a man needs to come in every few weeks to get a shot. A roller-coaster effect can also occur as blood testosterone levels peak and then return to baseline. [See “Exogenous vs. endogenous testosterone,” above.]

Topical therapies help maintain a more uniform level of blood testosterone. The first form of topical therapy was a patch, but it has a very high rate of skin irritation. In one study, as many as 40% of men who used the patch developed a red area on their skin. That limits its use.

The most commonly used testosterone preparation in the United States - and the one I start almost everyone off with - is a topical gel. There are two brands: AndroGel and Testim. The gel comes in miniature tubes or in a special dispenser, and you rub it on your shoulders or upper arms once a day. Based on my experience, it tends to be absorbed to good levels in about 80% to 85% of men, but that leaves a substantial number who don’t absorb enough for it to have a positive effect. [For specifics on various formulations, see table below.]

Are there any drawbacks to using gels? How long does it take for them to work?

Men who start using the gels have to come back in to have their testosterone levels measured again to make sure they’re absorbing the right amount. Our target is the mid to upper range of normal, which usually means around 500 to 600 ng/dl. The concentration of testosterone in the blood actually goes up quite quickly, within a few doses. I usually measure it after two weeks, though symptoms may not change for a month or two.

Types of Testosterone Treatment Compared

Comparison of forms of testosterone therapy

Generic (brand)
Regimen Advantages Disadvantages
Testosterone enanthate (Delatestryl) and testosterone cypionate (Depo-testosterone) injections 200 mg every 2–4 weeks (testosterone enanthate); 100 or 200 mg every 2–4 weeks (testosterone cypionate) Relatively inexpensive Peaks and valleys in blood testosterone levels; frequent office visits for injections
Scrotal testosterone patch (Testoderm) One 6-mg patch/day May be less irritating to skin than nonscrotal patches Scrotum must be shaved in order for patch to adhere to skin
Nonscrotal testosterone patch (Testoderm TTS and Androderm) One or two patches/day, depending on strength (2.5–5 mg/patch) Ease of application; mimics normal daily rise and fall of testosterone May need two patches a day; can cause skin irritation
Testosterone gels (AndroGel and Testim) 5–10 mg/day Ease of application; generally well tolerated by skin Not all patients absorb it well; potential to transfer to others through skin-to-skin contact soon after application; relatively expensive
Methyltestosterone (Testred) and fluoxymesterone (Halotestin) pills Not recommended None Can cause liver toxicity
Buccal testosterone (Striant) 30-mg tablet twice a day; applied to gums More effective at raising testosterone levels than skin patches May cause gum or mouth irritation, pain, and tenderness; bitter taste
Injectable testosterone undecanoate (Nebido/Aveed) 1,000 mg to start; 1,000 mg at 6 weeks; 1,000 mg every 12 weeks thereafter Needs to be administered only four times a year Under FDA review and not currently available in the United States

What about Testosterone pills?

There are pills in the United States for testosterone supplementation, but their use is strongly discouraged because they cause significant liver toxicity. A safe oral formulation called testosterone undecanoate is available in Canada and in Europe, but not in the United States. What’s quite exciting is that an injectable version of testosterone undecanoate (Nebido) was submitted to the FDA for approval in August 2007. (It's already approved in many other countries.) It lasts for 12 weeks, so a patient could come in and get a shot about four times a year. [Editor’s note: In December 2009, the brand name of the drug in the United States was changed to Aveed. As of January 2011, it was still awaiting FDA approval.]

Testosterone's impact on brain, bone, and muscle

Cherrier MM, Asthana MD, Plymate S, et al. Testosterone Supplementation Improves Spatial and Verbal Memory in Healthy Older Men. Neurology 2001;57:80–88. PMID: 11445632.

Isidori AM, Giannetta E, Greco EA, et al. Effects of Testosterone on Body Composition, Bone Metabolism and Serum Lipid Profile in Middle-aged Men: A Meta-analysis. Clinical Endocrinology 2005;63:280–93. PMID:16117815.

Liu PY, Swerdloff RS, Veldhuis JD. Clinical Review 171: The Rationale, Efficacy and Safety of Androgen Therapy in Older Men: Future Research and Current Practice Recommendations. Journal of Clinical Endocrinology and Metabolism 2004; 89:4789–96. PMID: 15472164.

Moffat SD, Zonderman AB, Metter EJ, et al. Longitudinal Assessment of Serum Free Testosterone Concentration Predicts Memory Performance and Cognitive Status in Elderly Men. Journal of Clinical Endocrinology and Metabolism 2002;87:5001–7. PMID: 12414864.

Wang C, Cunningham G, Dobs A, et al. Long-term Testosterone Gel (AndroGel) Treatment Maintains Beneficial Effects on Sexual Function and Mood, Lean and Fat Mass, and Bone Mineral Density in Hypogonadal Men. Journal of Clinical Endocrinology and Metabolism 2004;89:2085–98. PMID: 15126525.

Testosterone and Sex Drive

Other than improvement in sexual symptoms and a boost in libido, what are some of the potential benefits of testosterone-replacement therapy?

Some studies have looked at testosterone therapy and cognition. Although the findings weren't definitive, there was some evidence of cognitive improvement. Other studies have shown that it improves mood and alleviates depression. Testosterone therapy has also been shown to be effective in the treatment of osteoporosis and in increasing muscle bulk and strength. [See Testosterone’s impact on brain, bone, and muscle, above.]

Risks and TRT Precautions

What risks do you consider when prescribing testosterone-replacement therapy?

When patients ask about risks, I remind them that they already have testosterone in their system and that the goal of testosterone treatment is to restore its concentration back to what it was 10 or 15 years previously. And the molecule itself that we give is identical to the one that their bodies make naturally, so in theory, everything should be hunky-dory. But in practice, there are always some curveballs.

For example, testosterone can increase the hematocrit, the percentage of red blood cells in the bloodstream. If the hematocrit goes up too high, we worry about the blood becoming too viscous or thick, possibly predisposing someone to stroke or clotting events. Although, frankly, in a review that I wrote in the New England Journal of Medicine* where we reviewed as much of this as we could, we found no cases of stroke or severe clotting related to testosterone therapy. Nevertheless, the risk exists, so we want to be careful about giving testosterone to men who already have a high hematocrit, such as those with chronic obstructive pulmonary disease, or those who have a red-blood-cell disorder.

Although it's rare to see swelling caused by fluid retention, physicians need to be careful when prescribing testosterone to men with compromised kidney or liver function, or some degree of congestive heart failure. It can also increase the oiliness of the skin, so that some men get acne or pimples, but that’s quite uncommon, as are sleep apnea and gynecomastia (breast enlargement).

*Source: New England Journal of Medicine 2004;350:482–92. PMID: 14749457.

What about the risk of developing prostate cancer?

I think that the biggest hurdle for most physicians prescribing testosterone is the fear that they're going to promote prostate cancer. [See “Incongruous findings,” below.] That’s because more than six decades ago, it was shown that if you lowered testosterone in men whose prostate cancer had metastasized, their condition improved. (It became a standard therapy that we still use today for men with advanced prostate cancer. We call it androgen deprivation or androgen-suppressive therapy.) The thinking became that if lowering testosterone makes prostate cancer disappear, at least for a while, then raising it must make prostate cancer grow. But even though it’s been a widely held belief for six decades, no one has found any additional evidence to support the theory.

Haven't there been any studies that follow men who go on testosterone-replacement therapy to see what their rate of cancer is compared with that in men who are not on it?

As with a number of treatments or medicines that have been around for a long, long time, it hasn't been scrutinized like a new drug would be. And although they’ve been discussed, there aren’t any large-scale, randomized controlled clinical trials of testosterone-replacement therapy under way. [See “A male equivalent to the Women’s Health Initiative?” below.]

There have been a number of smaller studies on men receiving testosterone-replacement therapy, and if you look at the results cumulatively, the rate of prostate cancer in these men was about 1% per year. If you look at men who show up for prostate cancer screening, same sort of age population, the rate tends to be about the same. You have to be cautious in comparing studies and combining the results, but there’s no signal in these results that testosterone-replacement therapy creates an unexpectedly high rate of prostate cancer.

We also have epidemiologic studies, like the Physicians' Health Study, the Baltimore Longitudinal Study of Aging, and the Massachusetts Male Aging Study, that include tens of thousands of men who are followed for 5, 10, 15, or even 20 years. At the end of the study period, the researchers see who developed prostate cancer and who didn’t. They can then look at blood samples taken at the start of the study to see if, for example, the group that got prostate cancer had a higher level of testosterone over all. About 500,000 men have been entered in some 20 trials of this type around the world. Not one of those studies has shown a definitive correlation between prostate cancer and total testosterone. Three or four have shown weak associations, but none of those have been confirmed in subsequent studies.

Another point I'd like to make for people worried about a link between high testosterone and prostate cancer is that it just doesn’t make sense. Prostate cancer becomes more prevalent in men as they age, and that’s also when their testosterone levels decline. We almost never see it in men in their peak testosterone years, in their 20s for instance. We know from autopsy studies that 8% of men in their 20s already have tiny prostate cancers, so if testosterone really made prostate cancer grow so rapidly — we used to talk about it like it was pouring gasoline on a fire — we should see some appreciable rate of prostate cancer in men in their 20s. We don’t. So, I’m no longer worried that giving testosterone to men will make their hidden cancer grow, because I’m convinced that it doesn’t happen.

Can testosterone worsen BPH?

The evidence shows that testosterone treatment does not change the strength or rate of urine flow, does not change the ability to empty the bladder, and does not change other symptoms such as frequency or urgency of urination, as assessed by the American Urological Association Symptom Score or the International Prostate Symptom Score. I’ve had a couple of patients over the years who had some worsening of urinary symptoms with testosterone, but that’s rare, even with long-term use.

Incongruous Testosterone Medical Findings

Studies have come to conflicting conclusions about whether high levels of testosterone increase the risk of developing prostate cancer. A sampling of studies that have helped drive the controversy follows.

Increases in cancer risk

Parsons JK, Carter HB, Platz EA, et al. Serum Testosterone and the Risk of Prostate Cancer: Potential Implications for Testosterone Therapy. Cancer Epidemiology, Biomarkers, and Prevention 2005;14:2257–60. PMID: 16172240.

Shaneyfelt T, Husein R, Bubley G, et al. Hormonal Predictors of Prostate Cancer: A Meta-Analysis. Journal of Clinical Oncology 2000;18:847–53. PMID: 10673527.

No effect or decreases in cancer risk

Eaton NE, Reeves GK, Appleby PB, et al. Endogenous Sex Hormones and Prostate Cancer: A Quantitative Review of Prospective Studies. British Journal of Cancer 1999;80:930–34. PMID: 10362098.

Mohr BA, Feldman HA, Kalish LA, et al. Are Serum Hormones Associated with the Risk of Prostate Cancer? Prospective Results from the Massachusetts Male Aging Study. Urology 2001;57:930–35. PMID: 11337297.

Morgentaler A. Testosterone and Prostate Cancer: An Historical Perspective on a Modern Myth. European Urology 2006;50:935–39. PMID: 16875775.

Mixed findings

Slater S, Oliver RT. Testosterone: Its Role in the Development of Prostate Cancer and Potential Risks from Use as Hormone Replacement Therapy. Drugs and Aging 2000;17:431–39. PMID: 11200304.

What's your strategy for the concomitant administration of erectile dysfunction drugs?

My preference is to start men on testosterone, for a couple of reasons. First, if a man has successful return of his own erections, it’s like a home run for him. He doesn’t have to take a pill in anticipation of having sex. He can have sex whenever he wants. Second, the benefits of testosterone-replacement therapy often go way beyond erectile dysfunction. That may be what brought the patient into the office originally, but then he comes back saying how much better he feels in general, how much more energetic and motivated he is, how his drives on the golf course seem to be going farther, and how his mood is better.

But if somebody fails testosterone therapy, meaning that their erections aren't any better, I’ve said, Well, let’s stop the testosterone and try one of the PDE5, or phosphodiesterase type 5, inhibitors — sildenafil (Viagra), tadalafil (Cialis), and vardenafil (Levitra). A lot of patients then say, Well, actually, I'd like to stay on the testosterone. True, it's not helping my erections, but I’m more turned on, and I'm getting these other benefits. So we often continue the testosterone and add a PDE5 inhibitor.

There's a significant failure rate of the PDE5 inhibitors for erectile dysfunction, something on the order of 25% to 50%, depending on the underlying condition. It turns out that a third of those men will have adequate erections with testosterone-replacement therapy alone and another third will have adequate erections with the pills and testosterone combined. There's still a third who don’t respond, but normalizing their testosterone level has definitely rescued many men who had failed on PDE5 inhibitors.

Testosterone for Women

A male equivalent to the Women's Health Initiative?

In 2002, the federally sponsored Women's Health Initiative (WHI) stopped its hormone replacement therapy (HRT) trial (estrogen plus progestin), which included more than 16,000 women, three years early because those taking the pills had an increased risk of developing breast cancer and blood clots, and an increased risk of suffering a stroke or heart attack than those taking a placebo. The findings ran counter to the long-held belief that HRT could preserve health — and trim heart-disease risk in women.

Unlike previous studies of HRT, which had been observational in nature, the WHI was a double-blind, randomized controlled trial. The gold standard of scientific inquiry, these trials can conclusively test theories and assess cause and effect.

To date, no large, double-blind, randomized controlled studies of a link between testosterone treatment and prostate cancer have been completed. In its 2004 report, the Institute of Medicine (IOM) committee studying the need for clinical trials of testosterone-replacement therapy noted that only 31 placebo-controlled studies had been done in older men, with the largest one enrolling just 108 participants. Most of these studies lasted only six months.

The IOM report estimated that a study of whether there is an increased risk of prostate cancer in men on testosterone therapy might require following 5,000 men for three to five years. Before launching such an endeavor, the report recommended more firmly establishing the effectiveness of testosterone-replacement therapy, saying that studies of long-term risks and benefits should be conducted only after short-term efficacy has been proven. That means the male equivalent of the WHI remains far off.

Testosterone Monitoring and Testing

What's your thinking on performing a prostate biopsy before prescribing testosterone therapy?

I started doing prostate biopsies before putting men on testosterone therapy because the fear had always been that a hidden cancer might grow due to increased testosterone. It was also believed that low testosterone was protective. Well, we found prostate cancer in one of the first men with low testosterone we biopsied, even though his PSA level and digital rectal exam (DRE) were normal. As we did more of these, we found more and more cases, about one out of seven, despite normal DRE and normal PSA. When we had data for 77 men and the cancer rate was about the same, 14%, the Journal of the American Medical Association published our findings. At the time, that rate of prostate cancer in men with normal PSA was several times higher than anything published previously, and it approximated the risk of men who had an elevated PSA or an abnormal DRE. That was in 1996.

In a subsequent study of 345 men with normal PSA and low testosterone, we found the cancer rate was similar: 15%. And we had a large enough group to look at the impact of testosterone on cancer risk. For men whose total testosterone or free testosterone value was in the lowest third, the odds of having a positive biopsy were double the odds in the rest of the men. That’s the first evidence that low testosterone may be an independent predictor for the development of prostate cancer.

That would argue for doing a routine prostate biopsy on anyone considering testosterone-replacement therapy.

It's not universally accepted, but that’s what I do. Several recent studies have shown that low testosterone is associated with higher Gleason scores, with advanced-stage prostate cancer, and, even worse, with shorter survival times. [See “Low testosterone, PSA, and prostate cancer,” below.]

What recommendations do you have for monitoring once testosterone therapy begins?

The general recommendation is that men 50 and older who are candidates for testosterone therapy should have a DRE and a PSA test. If either is abnormal, the man should be evaluated further for prostate cancer, which is what we do with everybody whether they have low testosterone or not. That means a biopsy. But if all of those results are normal, then we can initiate testosterone therapy. The monitoring that needs to happen for men who begin testosterone therapy is really very simple: DRE, PSA, and a blood test for hematocrit or hemoglobin, once or twice in the first year and then yearly after that, which is pretty much what we recommend for most men over age 50 anyway.

Low testosterone, PSA, and prostate cancer

Morgentaler A, Rhoden EL. Prevalence of Prostate Cancer Among Hypogonadal Men with Prostate-Specific Antigen Levels of 4.0 ng/dL or less. Urology 2006;68:1263–67. PMID: 17169647.

Morgentaler A, Bruning CO 3rd, DeWolf WC. Occult Prostate Cancer in Men with Low Serum Testosterone Levels. Journal of the American Medical Association 1996;276:1904–6. PMID: 8968017.

Massengill JC, Sun L, Moul JW, et al. Pretreatment Total Testosterone Level Predicts Pathological Stage in Patient with Localized Prostate Cancer Treated with Radical Prostatectomy. Journal of Urology 2003;169:1670–5. PMID: 12686805.

Isom-Batz G, Bianco FJ Jr, Kattan MW, et al. Testosterone as a Predictor of Pathological Stage in Clinically Localized Prostate Cancer. Journal of Urology 2005;173:1935–37. PMID: 15879785.

Future directions

What changes do you see taking place on the testosterone front over the next five years?

I think that the importance of testosterone for cardiovascular health is going to be increasingly recognized. In the past, because men die of heart attacks more often than women and men have more testosterone, the fear has been that testosterone causes heart problems. But every single study of whether testosterone is bad for the heart has been negative, and what people haven’t pointed out in most of those negative studies is that there may be a beneficial effect.

I think we'll also find out in five years that there very well may be general health benefits of having normal testosterone compared to low testosterone. There are growing data for all-cause mortality that men who have low testosterone die earlier than those who have normal testosterone. A study by the Veterans Administration reported about a year ago showed low testosterone levels were associated with a dramatically increased mortality rate. It’s hard to know why that is, but I think we’ll be focused on that in the coming years.

Testosterone and Health

I think that low testosterone is under-recognized, its effects are greatly underappreciated, and its diagnosis isn’t readily understood. This is an area that has tremendous research potential in the coming years.*

*Note: Dr. Morgentaler presents a compelling argument in favor of testosterone-replacement therapy for men with hypogonadism. However, his views are not universally accepted, and evidence on both sides of the debate is limited.

Originally published March 2009; last reviewed February 18, 2011.

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Testosterone Replacement Therapy has potential medical benefits and risks as men age. The before and after effects of using testosterone are significant in men suffering from Andropause or low levels of the androgen hormone.

If you are an older man considering testosterone therapy, know that it can help you look younger, feel younger, boost sex drive and help you lead a more vigorous life as you age. However, TRT Testosterone Replacement is not for everyone and you must know the side effects and potential health risks before you make your decision to use Testosterone.

Testosterone Therapy or Low T Treatment has a lot of misconceptions about what the therapy can do for aging and middle age men. As men get older and androgen levels fall, sex drive, lean muscle, bone strength, energy and vitality decline and testosterone therapy seems to be a genuine anti-aging prescription for renewed life. The health benefits of testosterone therapy for male age-related declines in androgen levels are clear for men facing health issues caused by aging.

What is the Testosterone Hormone?

The Male Sex Hormone is Responsible for Male Characteristics

The influence of testosterone is all-encompassing and essential in a man's life. Testosterone is a hormone produced primarily in the testicles. Proper Testosterone levels help maintain men's:

What happens to Natural Testosterone Levels when Men Age?

Androgen Levels in Men Decline Steadily as they get Older

Testosterone levels generally peak during adolescence and early adulthood. As you get older, your testosterone level gradually declines, typically about 1 percent a year after age 30 or 40. It is important to determine in older men if a low testosterone level is simply due to the decline of normal aging (Andropause, the male menopause), or if it is due to a disease (hypogonadism).

Andropause or Hypogonadism is an endocrine or urological disease in which the body is unable to produce normal amounts of testosterone due to a problem with the testicles or with the pituitary gland that controls the testicles. Testosterone replacement therapy can improve the signs and symptoms of low testosterone in these men. Doctors may prescribe testosterone as injections, pellets, patches or gels. The types of hypogonadism are Primary and Secondary depending upon the source of the androgen decline, pituitary failure or dysfunction and testicular dysfunction. Many times both of these can also be a cause of impotence or Erectile Dysfunction in men. In cases of ED a variety of medications known as prostaglandins and vasodilators may be used together with testosterone hormone medication to alleviate symptoms of ED - Treat Erectile Dysfunction in Men

Do Declining Testosterone Levels cause the signs and symptoms of aging?

Many Anti-Aging Medicine Doctors and Male HRT Specialists believe man age because hormones like testosterone, DHEA and Human Growth Hormone Decline. Middle aged men experience many signs and symptoms as they age including hot flashes, night sweats, rapid weight gain, muscle loss, and loss of sexual ability and desire. Some negative age-related changes in men that can occur as a result of lower than normal testosterone levels and may include: Changes in sexual function. This may include reduced sexual desire, weak or infrequent erections, fewer morning or spontaneous erections during sleep, and infertility. Sleep disturbance and changes in sleep patterns. Sometimes low testosterone causes insomnia or other sleep pattern disturbances.

Clear Physical Changes due to Androgen Deficiency in Middle Aged Men. Physical changes that become apparent as androgen levels decline include increased body fat, reduced muscle bulk and strength known as catabolic effects, and decreased bone density. Swollen or tender breasts (gynecomastia), elevated PSA levels and body hair loss are also common. You may have less energy than you used to. Emotional changes. Low testosterone may contribute to a decrease in motivation or self-confidence. You may feel sad or depressed, or have trouble concentrating or remembering things. Some of these signs and symptoms can be caused by various underlying factors, including medication side effects, obstructive sleep apnea, thyroid problems, diabetes and depression. It's also possible that these conditions may be the cause of low testosterone levels, and treatment of these problems may cause testosterone levels to rise. A Testosterone Blood Test is the only way to diagnose a man's low testosterone level - find out more about Testosterone Lab Test. A lab test for testosterone will measure the serum concentrations of total testosterone, free testosterone, dihydrotestosterone, estradiol, and (SHBG) sex hormone–binding globulin which reduces bio-available or free testosterone, were measured in a man's blood serum.

Testosterone Effects Before and After Treatment

Before and After Testosterone Treatment. Naturally produced or endogenous Testosterone concentrations in men decrease with increasing age. Many symptoms and health conditions similar to those that are caused by low testosterone levels in men with pituitary or testicular dysfunction become common after the age of 40, and even more common with increasing age, especially after the age of 50. Such low T symptoms include decreases in sexual function, desire and frequency, mood swings, weight gain, oteoporosis, loss of energy, and mobility. These age-related hormonal symptoms strongly suggest that the lower testosterone levels in older men may contribute to these health conditions and require androgen replacement to alleviate or reverse symptoms. To gain effective before and after testosterone treatment results, Post Cycle Therapy or PCT is an important component of TRT.

After a treatment cycle with testosterone or if a steroid hormone cycle is ending, auxilliary hormone medications and compounds may need to be prescribed to maintain steady androgen levels, prevent testicular atrophy and keep muscle and loss from returning. HCG (Human Chorionic Gonaditropin) anti-estrogens and estrogen blocking modulators assist in helping keep your natural testosterone production functioning. Testosterone Before and After Results

Is it Low T or Low HGH

Human Growth Hormone works with Testosterone to maintain Men's Hormone and Sexual health.

Sometimes, men feel exhausted all the time and stressed at work leaving them extremely fatigued. In addition to low androgen levels, a deficiency in Human Growth Hormone can also lead to very low energy levels, low libido, weight gain and flabby muscles. It is important to balance testosterone along with HGH, estrogen and cortisol levels to ensure treatment is comprehensive to restore optimal health. Read more about how Human Growth Hormone plays a role in hormone health - Human Growth Hormone Therapy.

Is it Low T or a Low Thyroid Condition

Symptoms of Low T sometimes mimic those of hypothyroidism or underactive thyroid and the difference can be subtle. Some men may nee both testosterone replacement and thyroid therapy. For example, middle-aged men with low androgen levels, especially over the age of 40, feel very lethargic and gain weight very quickly. With thyroid conditions in men, getting up in the morning is very difficult and it can take hours to begin to feel awake. Falling asleep during work or at a meal is very common with underactive thyroid, but is also a common symptom of Low Testosterone Hormone levels. The medication prescribed for thyroid symptoms is different than for that for Andropause symptoms. For this reason, a complete hormone panel is usually recommended to see which hormones may be deficient and tailor an individualized Age Management Program for men with hormonal imbalance and particularly for men over the age of 50 with low T levels.

Low Testosterone Levels in Older Men due to Andropause - Male Menopause is a treatable and reversible male health condition. You needn't let Low T impact your self-esteem, your work life or your romantic relationships. You don't need to suffer, Male Hormone Replacement Therapy using bio-identical testosterone can help. Harvard Medical Studies have shown that testosterone-replacement therapy may offer a wide range of benefits for men with hypogonadism, including improved libido, mood, cognition, muscle mass, bone density, and red blood cell production. If you are among the millions of men experiencing symptoms of low testosterone, get tested and treated today.

Low T and Severe Erectile Dysfunction

Many middle-aged men with low testosterone levels have Severe ED Symptoms that require a combination of highly effective ED Treatments to boost androgen levels and simultaneously increase blood flow to the penis. Read more about ED Treatment Solutions for men with severe Erectile Dysfunction symtoms.. Among the new, advanced ED Treatments are the P-Shot, Trimix Penile Injections for ED, Gainswave ED Therapy (GAINSWave ED Shockwave Therapy, and the P-Shot for ED. Read more about TriMix for Sale Online.

Is Andropause the same as Menopause?

Andropause in Men is different from the menopause that women experience. In menopause, the production of female hormones drops suddenly and related symptoms can appear suddenly including hot flashes, loss of libido and rapid weight gain. In men, there is a more gradual decline in the male sex hormone levels and so Andropausal symptoms, as well as those of ED or erectile dysfunction, also appear more gradually. Men with low testosterone levels are not always aware that hormonal imbalance is affecting their health. Women also produce testosterone, although in much smaller quantities than men. During menopause low testosterone levels can cause female sexual dysfunction and women may also benefit from testosterone therapy. Read more about Testosterone Therapy for Women.

Testosterone Medical Studies Confirming Benefits

Medical Center Studies of Testosterone Before and After Treatment Results. A year's worth of testosterone treatment in older men may help improve sexual function, mood, depressive symptoms, mobility and possibly walking distance. Anti-Aging Medicine Physicians have suggested that hormone replacement using natural testosterone seems to improve drive, vigor and vitality in aging men even in men over 60 to 70 years of age.

New medical testosterone findings demonstrated positive treatments effects from placebo-controlled, multicenter Testosterone Trials measuring Sexual Function, Physical Function and Vitality. These clinical trials were conducted to assess whether testosterone benefits older men who have low testosterone levels due to age-related decline. The trials goal was to establish a clear benefit of taking testosterone before assessing long-term risks. The Testosterone Trials involving testosterone anabolic-androgenic steroid therapy were supported by a grant from the National Institute on Aging, with additional funding from the National Heart, Lung, and Blood Institute, National Institute of Neurological Disorders and Stroke, and National Institute of Child Health and Human Development, and AbbVie, the maker of Androgel® Topical Testosterone gel. Actavis Watson Laboratories, makers of Cypionate Testosterone injections, Merck, Amgen and Eli Lilly, the makers of Axiron Topical Gel also granted support for the androgen health trials.

What types of Testosterone can I buy?

Testosterone for Older Mencomes in 4 main type of esters or long-acting steroid injectables - Cypionate, Depo-Testosterone, Propionate, Undecanoate, Enanthate Injections.

Testosterone Cypionate

Testosterone Enanthate

Testosterone Propionate

Depo-Testosterone Injections

Pharmacy Times Testosterone Review

While Health Benefits of TRT are shown for Aging Men, Caution has been advised for Men with Prostate Health Conditions

In an article published in Feb, 2015, Testosterone May Prove an Unlikely Ally in Fight Against Prostate Cancer. Although testosterone is often considered to be a catalyst of prostate cancer, a recent study suggests that the hormone may be able to subdue advanced prostate cancer and break down resistance to testosterone-blocking drugs used to treat the disease.

The study, published on January 7, 2015, in Science Translational Medicine, examined 16 men with metastatic prostate cancer who had been receiving testosterone-lowering treatment to which their cancers were growing resistant. The men were given three 28-day cycles of an intramuscular testosterone injection and 2 weeks of etoposide, a chemotherapy drug. Of the 14 men who completed the trial, 7 were found to have a 30% to 99% reduction in their prostate specific antigen (PSA) levels, which indicated that their cancers were stabilizing or becoming less severe. Four of those 7 men remained on testosterone therapy for 12 to 24 months, during which they continued to experience reduced PSA levels. In addition, of the 10 men whose metastatic cancers were measured with imaging scans, 5 experienced a reduction in tumor size greater than 50%, with 1 man's cancer disappearing entirely. While the study's authors find these results promising, they note that further research is needed to support their theory that testosterone therapy can reverse prostate cancer treatment resistance.

Importantly, The FDA continues to warn men with certain health problems such as prostate and coronary disease about the risks of using androgen products including testosterone steroids.

Testosterone Safety

With these androgen therapy trials and clinical studies in mind, Testosterone Replacement is not for everyone and the same is true of Human growth Hormone Replacement Therapy. The FDA has an important warning for men with coronary disease or a history of cardiovascular disease, prostate problems, or cancer. Always consult with a licensed medical professional before taking any hormone product, including bio-identical hormones such as testosteron, HCG, or genuine injectable Human Growth Hormone (Somatropin).

The Urology and Endocrine physicians at Optimal Hormone Therapy are Mayo-Clinic® and Cenegenics® trained nationally recognized experts in the field of hormone replacement therapy. If you think you may be suffering from low Testosterone or Human Growth Hormone levels, schedule an appointment to have a complete and thorough analysis of your health. Once completed we will decide together with you which type of treatment is right for you.

Our endocrinologists and urologists offer the best Testosterone medications and HGH prescription drugs available for sale including Pfizer Genotropin and Miniquick HGH pen, Sandoz Omnitrope, Merck Serono Saizen and Click.Easy, Norditropin Flexpro and Nordiflex from Novo Nordisk. The lowest price on injectable testosterones from Pfizer, West-Ward, Actavis Watson, Endo Pharma and Sun Pharma including Depo-Testosterone Cypionate, Enanthate Injections, Propionate Testosterone and Tri-Blend Multi-Test preparations to treat Andropause, hypogonadism, menopoause (female sexual dysfunction) and erectile dysfunction. Find ED Therapy Doctors & Urologists who prescribe Trimix, Caverject®, Low Intensity Shockwave Penile Treatment such as Gainswave® and other erectile medications.

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