Taureau
Administrator
I've lost my mojo!
Fact: Primitive man lived for only about 18 years, if he was lucky.
Fact: Men in the late 1700s lived for about 35 years.
Fact: A century later, in the late 1800s, men lived around 42 years.
Fact: Today, the average American male can expect to live well into his late seventies.
Fact: That's a lot more time in which to get laid!
As the population of the United States and other industrialized nations becomes older and older, the science and the medicine surrounding aging is improving. We're making all sorts of new discoveries regarding what may cause aging, as well as how to stave off the effects of aging for as long as possible.
One of the apparent effects of aging in men is the gradual loss of the production of testosterone. Typically, the average human male will see about a 1% decrease per year in T levels starting at about age 40.(1) Although this decline seems slow, and not all men will end up hypogonadal as they age, the prevalence of testosterone deficiency in older men isn't insignificant. At least 20% of men over the age of 60 have serum testosterone levels below the lower limit of normal (300-1,100 ng/dl).
Over the past 20 years, there's been considerable interest in evaluating whether testosterone replacement therapy or male "hormone replacement therapy" (HRT) is beneficial for certain men in preventing or lessening some aspects of the aging process. Male HRT has become en vogue in recent months with the launch of new topical testosterone preparations, such as patches and gels. Some pharmaceutical industry analysts believe that the male HRT market could be a $2 billion per year industry in the US alone within the next few years. Yes, that's right: a two, and nine zeroes!
It would be easy to author a book regarding all of the wonders of testosterone throughout the human life span. However, the focus of this article is going to be on testosterone (or hormone) replacement for men who have age-related or idiopathic hypogonadism and what they can and should do to ameliorate this condition. I will only deal with male hormonal issues and won't discuss the aspect or role that human growth hormone may play in staving off the aging process.
The Quest for the Fountain of Youth Continues
As many of you may already know, I offer personal telephone consultations. Lately, about 40% of my consults have been men in their late thirties to mid-fifties who suffer from age-related declines in testosterone levels and are looking for a "magic bullet" to make them feel young and full of piss again.
If you're a person who falls into this category, I have some bad news for you: there's no magic bullet (pill, injection, or suppository). It's doubtful that anything can transform you into a modern day Ponce de Leon (he didn't find the fountain of youth, either, just Florida). Face it, you're on a slippery slope, and I believe that if you're lucky enough to live a long life, you'll inevitably experience moderate to severely diminished capacity, regardless of any current therapy. So you need to be realistic. There are therapies that can help you and give back some of the gusto that you had when you were younger. But, as you continue to age, even these therapies will probably become less and less effective.
The endocrine system (and, perhaps, testosterone in particular) has been deemed the "pacemaker" of male aging.(2) As T levels decrease, men experience things such as a decreased feeling of well-being, decreased virility, increased visceral fat, osteopenia, atherosclerosis, and impaired cognitive function. In fact, some studies have shown that a decrease in testosterone levels might even be associated with a decrease in visuospatial functioning and a deterioration of verbal skills.(3)
There are also direct relationships between lowered testosterone levels and impaired memory, inability to concentrate, periodic sweating, reduction of muscle mass and power, bone aches, and last—but certainly not least—sexual dysfunction.(4) You may even get the uncontrollable urge to watch "The View" or "Oprah." Quite obviously, none of these effects are desirable. We want to eliminate the effects entirely for as long as possible, or we want to lessen them as much as possible for as long as we can.
Since many things in the male human body are responsible for the secretion of testosterone by the testes, the question beckons: what are the causes of testosterone reduction as we age? Is it due to the testes themselves not being able to make testosterone in sufficient quantities, or is some other pre-testicular decline at the pituitary occurring?
In one study conducted at Veterans Administration Hospital in Seattle, Washington, 29 young (ages 22-35) and 26 elderly (ages 65-84) healthy men were studied. All of the men had a single, random blood sample drawn, and 14 of the men in each group underwent frequent blood sampling for 24 hours. Both mean 24-hour serum total and free testosterone levels were reduced in elderly men compared to young men, while estradiol and sex hormone-binding globulin levels were similar for both age groups. Also, luteinizing hormone (LH), a hormone that can indirectly cause the testes to secrete testosterone, was similar in both groups in regard to amount and pulse frequency of secretion.
Upon giving members in both groups 50 mg of oral clomiphene citrate (Clomid) for seven days, total testosterone levels in the young men increased by an average of 100%, and free testosterone levels increased by an average of 304%. However, in the elderly group, these values increased by only 32% and 8%, respectively.
This study suggested that major age-related changes occur in the hypothalamic pituitary testicular axis (HPTA) on the level of the testes and are manifested by a decreased responsiveness to luteinizing hormone.(5) So, it's probable that the age-related decline of serum testosterone levels are due to decreased activity in the testes.
How can the side effects of age-related male hypogonadism be reversed? Seems pretty simple, huh? Just give these men shots of testosterone, right? Not so fast. There's a lot more to it than just cranking Grandpa with an amp or two of Sustanon-250 per week.
In younger men who have unexplainable reductions in serum testosterone (idiopathic disease), Clomid may be an effective standalone therapy because the problem may not be at the testicular level. The correlation between testicular function and decreased serum levels of testosterone is generally only made in older men.
One area that I (along with many others) have been in error regards the relationship between testosterone and prostatic hypertrophy and cancer. I don't doubt that the gonzo amounts of androgens that bodybuilders ingest will eventually lead to them having prostate glands the size of potatoes. The question is whether or not replacement therapy levels (considerably less than what a bodybuilder would use) have a similar effect. The answer seems to be no, it won't cause prostate problems.
In a study conducted in Poland that was published in 1998, 30 men (average age 61.1 years) with low testosterone levels were given intramuscular injections (200 mg) of testosterone enanthate every two weeks for 1.5-6.0 years, with the average duration being 3.35 years. This study demonstrated an increase in bone density, libido, potency, and positive mood parameters and a decrease in total cholesterol and LDL cholesterol associated with testosterone enanthate use. In other words, by the end of the study, every Polish woman in town was walking funny.
Interestingly enough, those patients with coronary artery disease demonstrated a decrease in angina pectoris and nitrate (medication) requirement. But what was really interesting from a prostate point of view was that even though the average serum prostate-specific antigen (PSA) level more than doubled from 0.65 ng/dl to 1.35 ng/dl, there were no clinically manifested adverse effects on the prostate.(6) It's probable, though, that if the testosterone dose given was greatly increased, there would be prostate issues.
In another study conducted at the University of Iowa and published in 1999, testosterone therapy given to men for up to two years showed only mild increases in PSA over control values.(1) Thus, I'll go on record here as saying that the prostate issue, with regard to hormone replacement therapy, is probably really a non-issue for most men, at least when speaking about testosterone as replacement therapy.
Fact: Primitive man lived for only about 18 years, if he was lucky.
Fact: Men in the late 1700s lived for about 35 years.
Fact: A century later, in the late 1800s, men lived around 42 years.
Fact: Today, the average American male can expect to live well into his late seventies.
Fact: That's a lot more time in which to get laid!
As the population of the United States and other industrialized nations becomes older and older, the science and the medicine surrounding aging is improving. We're making all sorts of new discoveries regarding what may cause aging, as well as how to stave off the effects of aging for as long as possible.
One of the apparent effects of aging in men is the gradual loss of the production of testosterone. Typically, the average human male will see about a 1% decrease per year in T levels starting at about age 40.(1) Although this decline seems slow, and not all men will end up hypogonadal as they age, the prevalence of testosterone deficiency in older men isn't insignificant. At least 20% of men over the age of 60 have serum testosterone levels below the lower limit of normal (300-1,100 ng/dl).
Over the past 20 years, there's been considerable interest in evaluating whether testosterone replacement therapy or male "hormone replacement therapy" (HRT) is beneficial for certain men in preventing or lessening some aspects of the aging process. Male HRT has become en vogue in recent months with the launch of new topical testosterone preparations, such as patches and gels. Some pharmaceutical industry analysts believe that the male HRT market could be a $2 billion per year industry in the US alone within the next few years. Yes, that's right: a two, and nine zeroes!
It would be easy to author a book regarding all of the wonders of testosterone throughout the human life span. However, the focus of this article is going to be on testosterone (or hormone) replacement for men who have age-related or idiopathic hypogonadism and what they can and should do to ameliorate this condition. I will only deal with male hormonal issues and won't discuss the aspect or role that human growth hormone may play in staving off the aging process.
The Quest for the Fountain of Youth Continues
As many of you may already know, I offer personal telephone consultations. Lately, about 40% of my consults have been men in their late thirties to mid-fifties who suffer from age-related declines in testosterone levels and are looking for a "magic bullet" to make them feel young and full of piss again.
If you're a person who falls into this category, I have some bad news for you: there's no magic bullet (pill, injection, or suppository). It's doubtful that anything can transform you into a modern day Ponce de Leon (he didn't find the fountain of youth, either, just Florida). Face it, you're on a slippery slope, and I believe that if you're lucky enough to live a long life, you'll inevitably experience moderate to severely diminished capacity, regardless of any current therapy. So you need to be realistic. There are therapies that can help you and give back some of the gusto that you had when you were younger. But, as you continue to age, even these therapies will probably become less and less effective.
The endocrine system (and, perhaps, testosterone in particular) has been deemed the "pacemaker" of male aging.(2) As T levels decrease, men experience things such as a decreased feeling of well-being, decreased virility, increased visceral fat, osteopenia, atherosclerosis, and impaired cognitive function. In fact, some studies have shown that a decrease in testosterone levels might even be associated with a decrease in visuospatial functioning and a deterioration of verbal skills.(3)
There are also direct relationships between lowered testosterone levels and impaired memory, inability to concentrate, periodic sweating, reduction of muscle mass and power, bone aches, and last—but certainly not least—sexual dysfunction.(4) You may even get the uncontrollable urge to watch "The View" or "Oprah." Quite obviously, none of these effects are desirable. We want to eliminate the effects entirely for as long as possible, or we want to lessen them as much as possible for as long as we can.
Since many things in the male human body are responsible for the secretion of testosterone by the testes, the question beckons: what are the causes of testosterone reduction as we age? Is it due to the testes themselves not being able to make testosterone in sufficient quantities, or is some other pre-testicular decline at the pituitary occurring?
In one study conducted at Veterans Administration Hospital in Seattle, Washington, 29 young (ages 22-35) and 26 elderly (ages 65-84) healthy men were studied. All of the men had a single, random blood sample drawn, and 14 of the men in each group underwent frequent blood sampling for 24 hours. Both mean 24-hour serum total and free testosterone levels were reduced in elderly men compared to young men, while estradiol and sex hormone-binding globulin levels were similar for both age groups. Also, luteinizing hormone (LH), a hormone that can indirectly cause the testes to secrete testosterone, was similar in both groups in regard to amount and pulse frequency of secretion.
Upon giving members in both groups 50 mg of oral clomiphene citrate (Clomid) for seven days, total testosterone levels in the young men increased by an average of 100%, and free testosterone levels increased by an average of 304%. However, in the elderly group, these values increased by only 32% and 8%, respectively.
This study suggested that major age-related changes occur in the hypothalamic pituitary testicular axis (HPTA) on the level of the testes and are manifested by a decreased responsiveness to luteinizing hormone.(5) So, it's probable that the age-related decline of serum testosterone levels are due to decreased activity in the testes.
How can the side effects of age-related male hypogonadism be reversed? Seems pretty simple, huh? Just give these men shots of testosterone, right? Not so fast. There's a lot more to it than just cranking Grandpa with an amp or two of Sustanon-250 per week.
In younger men who have unexplainable reductions in serum testosterone (idiopathic disease), Clomid may be an effective standalone therapy because the problem may not be at the testicular level. The correlation between testicular function and decreased serum levels of testosterone is generally only made in older men.
One area that I (along with many others) have been in error regards the relationship between testosterone and prostatic hypertrophy and cancer. I don't doubt that the gonzo amounts of androgens that bodybuilders ingest will eventually lead to them having prostate glands the size of potatoes. The question is whether or not replacement therapy levels (considerably less than what a bodybuilder would use) have a similar effect. The answer seems to be no, it won't cause prostate problems.
In a study conducted in Poland that was published in 1998, 30 men (average age 61.1 years) with low testosterone levels were given intramuscular injections (200 mg) of testosterone enanthate every two weeks for 1.5-6.0 years, with the average duration being 3.35 years. This study demonstrated an increase in bone density, libido, potency, and positive mood parameters and a decrease in total cholesterol and LDL cholesterol associated with testosterone enanthate use. In other words, by the end of the study, every Polish woman in town was walking funny.
Interestingly enough, those patients with coronary artery disease demonstrated a decrease in angina pectoris and nitrate (medication) requirement. But what was really interesting from a prostate point of view was that even though the average serum prostate-specific antigen (PSA) level more than doubled from 0.65 ng/dl to 1.35 ng/dl, there were no clinically manifested adverse effects on the prostate.(6) It's probable, though, that if the testosterone dose given was greatly increased, there would be prostate issues.
In another study conducted at the University of Iowa and published in 1999, testosterone therapy given to men for up to two years showed only mild increases in PSA over control values.(1) Thus, I'll go on record here as saying that the prostate issue, with regard to hormone replacement therapy, is probably really a non-issue for most men, at least when speaking about testosterone as replacement therapy.