Men and Andropause: Part 3

By Mike Clark, Education Director and CEO of NBH Lifetime Health

Hypogonadism (low testosterone) and Heart Trouble

Low testosterone levels have also been implicated in playing a role in the development of chronic diseases such as atherosclerosis and cardiovascular heart disease. One study found that, in assessing a group of men and postmenopausal women over 50 years of age for levels of various hormones as they might relate to health conditions, plasma estradiol levels were highest in hypertensive men and testosterone levels were lowest in men with coronary heart disease. The researchers conclude that perhaps, “Decreased testosterone and/or increased estradiol may have an adverse effect on lipid profile in elderly men.”

Another study conducted among a male population likewise reported that low testosterone may be a risk factor for coronary heart disease, which may relate to lipoprotein metabolism by endogenous testosterone. Results showed that mean plasma testosterone levels among patients with coronary heart disease were significantly—about 40%—lower than in healthy subjects. Moreover, there was a negative association between plasma testosterone levels and plasma triglyceride levels and lipoprotein (a), which translated into higher blood lipid levels relative to lower testosterone levels. Contrarily, a positive association between plasma testosterone levels and high-density lipoprotein cholesterol and high-density lipoprotein 3 cholesterol meant that higher testosterone levels equaled higher “good” cholesterol levels.

The Natural Aging Factor

It is well documented in research that sex hormones such as testosterone are vital components in the sexual development of pubescent males, as well as contributing to the increase of their muscle and bone mass as they transform from boys into men. Meanwhile, dwindling testosterone levels as a result of metabolic aging trigger the opposite kind of effects, including the loss of body hair and progression of male pattern baldness, loss of muscle and bone mass, and increased fat.

Low testosterone levels aren’t just the prospect of a small segment of the male population but rather, they tend to affect the male population as a whole. Natural aging causes a gradual decline in male hormones, so that by age 70, men have less than a quarter of their optimal testosterone levels. Some figures reveal that free testosterone levels start to fall at the age of 25. While men with normal testosterone levels sometimes exhibit some of the symptoms, which may very well stem from other causes besides hypogonadism, the fact that androgen therapy usually alleviates these symptoms suggests a hormonal deficiency as the root cause of such deterioration in health.

Many study results show a positive role in maintaining adequate testosterone levels in aging males. In terms of overall body composition, for example, research has demonstrated a measurable increase in lean body mass and in mid-arm circumference and the decrease in waist-to-hip ratio in elderly men, after they received androgen replacement therapy to treat their low testosterone levels.

Environmental toxins may affect testosterone

There’s evidence that chemicals in the environment known as endocrine disrupters may be causing a decrease in testosterone. Endocrine disrupters interfere with the normal functioning of the endocrine system. Scientists in Britain have done research in rats on the estrogen-mimicking chemical HPTE, which is a metabolite of the commonly used pesticide methoxychlor. These scientists have shown that HPTE causes a decrease in, testosterone production from Leydig cells. Other compounds, such as those found in plastic bottles that hold everything from bottled water to laundry detergent, are man-made mimics of estrogen. This may be one of the reasons why we are seeing more young males with low levels of testosterone.

NBH Lifetime Health Lab Tests

It is recommended that all males over the age of 35 be tested for their levels of  free testosterone, total testosterone, estradiol and DHEA. We also suggest the standard tests for cholesterol as well as tests for the major heart factors including homocysteine, fibrinogen, and CRP.

I would like to thank Dr. Edward Rosick for some of the scientific material contained herein.

Men and Andropause: Part 2

By Mike Clark, Education Director and CEO of NBH Lifetime Health

Testosterone-the Key to Andropause

In women, estrogen and progesterone are the two key hormones that decline during menopause. In men, it is the hormone testosterone that falls most in production as a man ages, and it’s thought that this fall is the single most important cause of andropause. Testosterone levels peak in a man at approximately age 25 to 30 and then begin a gradual decline. Some men have low testosterone by age 30.

One reason that aging men are not diagnosed as being testosterone deficient is that blood test laboratory reference ranges are age-adjusted to reflect the anticipated reduction in testosterone production. So, when a doctor looks at an aging man’s free testosterone blood test result, he often sees it fitting neatly into the standard reference range for a “normal” aging man. The problem is that normal aging men are expected to have lower testosterone levels, which are far from optimal (youthful) ranges. The optimal testosterone level for most aging males are those of a healthy 21-to-30 year old.

Testosterone is vitally important for its anabolic properties, including effects on cholesterol levels, protein breakdown, muscle mass and bone density, and its androgenic effects, including the development and maintenance of male secondary sex characteristics (deep voice, increase in facial and body hair, muscle

How Testosterone Changes in Aging Men

One change found in aging is in the ratio of free testosterone to testosterone bound to SHBG. In many aging men, especially those who are obese, free testosterone levels drop significantly as the levels of SHBG increase and “bind up” whatever free testosterone is left. As if this news isn’t bad enough, there are also steep declines (40% to 75%) in other steroid hormones, including dehydroepiandrosterone (DHEA) and DHEA-sulfate (DHEA-S) seen in men as they age from 20 to 80.

Testosterone Strengthens Muscles and Bones

One of the most destructive effects of aging is the loss of muscle and bone mass. While the loss of bone mass, or osteoporosis, is now widely recognized as a significant factor in robbing elderly women of their ability to walk, osteoporosis is also a significant health concern for older men. In addition, the loss of muscle tissue, or sarcopenia, is now finally being recognized as a major debilitator of both men and women. In men, both sarcopenia and osteoporosis can be linked to the decline in testosterone and other steroid hormones.

Adequate levels of testosterone are also needed for optimal brain functioning. Multiple studies have confirmed that men who maintain optimal testosterone levels as they age have significantly fewer symptoms of senility compared to men with low levels of testosterone. In a hallmark study published in 2002, 407 men aged 50-to-91 were followed for 10 years and were given multiple tests to determine their testosterone levels and cognitive functioning.

The authors concluded: “Higher FTI [free testosterone levels] was associated with better scores on visual and verbal memory, visuospatial functioning and visuomotor scanning and a reduced rate of longitudinal decline in visual memory.” Furthermore, those randomized, placebo-controlled studies showed that testosterone supplementation improved verbal memory, working memory and visuospatial performance in elderly men.

Declining Testosterone Levels

Declining testosterone levels can lead to the development of numerous symptoms such as a decrease in virility, libido and sexual activity, general sense of well-being, as well as fatigue, depression and sleep disturbances. In addition to problems such as sexual dysfunction or general malaise, low testosterone also translates into decreased muscle mass and strength, as well as a decrease in bone mass and an increase in abdominal fat. Studies show that the latter two pay a role in degenerative diseases such as osteoporosis, cardiovascular disease and diabetes. Moreover, depleted testosterone levels are being linked to the incidence of various lipid disorders and heart disease.

Less Bone, More Fat

While osteoporosis hasn’t always been considered a disease that afflicts males, the rising incidence of bone mass degeneration among aging men points a finger to some age-related cause. As androgen receptors are expressed in osteoblasts (bone-forming cells) researchers now believe that androgens have some direct effect on bone formation and resorption.

Declining Testosterone, Fat Mass and Heart Risk

A growing body of research now suggests that an age-related increase in fat mass, or obesity, can be attributed to a fall in free testosterone and growth hormone levels. Moreover, studies report a connection between abdominal obesity and increased cardiovascular mortality and Type II diabetes mellitus. Recent findings from the University Hospital in Ghent, Belgium illustrate that age is related to a drop in free testosterone levels and free insulin-like growth factor-1, while contributing to an increase in body mass index and fat mass.

One recent study consisting of 372 males aged >20-85, revealed that body mass index and age were independent factors in determining testosterone levels. These decreased by about one quarter when researchers compared the young controls to men in the elderly group, while free testosterone levels fell by almost half with age. Likewise, fat-free mass decreased by 18.9%. In a subgroup of 57 men aged 70-80 years, the lower that testosterone levels dropped, the higher the percentage of body and abdominal fat, as well as plasma insulin levels.

Low Testosterone and Increased Risk of Diabetes and Adipose Fat.

Other findings indicate that low testosterone levels predisposed men to adipose fat which, in turn, seemed to raise their risk of diabetes mellitus. Researchers at the University of Washington’s Department of Medicine set out to examine the effects of age-related decreasing serum testosterone levels on intra-abdominal fat in a group of 110 second-generation healthy Japanese-American men. Measurements were taken first to establish baseline levels of glucose, body mass index, visceral adiposity, subcutaneous fat, fasting insulin and C-peptide levels, and overall testosterone levels (which were within the normal range relative to the men’s age).

When the researchers performed follow-up measurements 7.5 years later, their results indicated that intra-abdominal fat had increased by an average of 8.0 centimeters squared. More importantly, though, they found that the change in intra-abdominal fat correlated to baseline total testosterone levels, but they were not significantly related to other measurements such as body mass index, total fat or subcutaneous fat. The study authors concluded that, in their sample, “lower baseline total testosterone independently predicts an increase in intra-abdominal fat. This would suggest that by predisposing to an increase in visceral adiposity, low levels of testosterone may increase the risk of type II diabetes mellitus.”

Low testosterone Levels, Excess Abdominal Fat and Heart Disease

Similarly, another study that analyzed some of the health effects of excess abdominal fat, also referred to as android obesity, reported that individuals exhibiting upper body excess fat distribution tend to have lower levels of plasma testosterone and growth hormone levels, suggesting what the authors describe as “complex hormonal abnormalities”.

Abdominal obesity lends itself to an apple-shaped figure and has been related to a heightened risk of conditions such as cancer, diabetes and heart disease. These researchers believe that, “Visceral fat tissue, through its portal drainage, could be an important source for free fatty acids that may exert complex metabolic effects: involvement in hepatic lipogenesis, increase in hepatic neoglucogenic flux, reduction in insulin metabolic clearance and involvement in peripheral insulin resistance through a competition mechanism described by Randle.”

They conclude that abdominal obesity may be related to diabetes by means of an enhanced fatty acid made available from fat tissues (visceral and subcutaneous) in individuals who are genetically predisposed to type II diabetes. Research has also pointed to the possibility of a link between abdominal obesity and hypercorticism, or elevated cortisol levels. A reason for this, suggest scientists, might be that excess cortisol opposes testosterone and growth hormone production, both of which are regulators of body fat. Moreover, low testosterone levels also seem to encourage cortisol levels to rise and elicit their many aging effects, including immune dysfunction, brain cell injury, arterial wall damage and other assaults.

…continue to Part 3 for “Hypogonadism and Heart Trouble” and “The Natural Aging Factor”

Men and Andropause: Part 1

By Mike Clark, Education Director and CEO of NBH Lifetime Health

In a recent article regarding andropause, the author stated that “any man that is feeling the signs of andropause, should definitely see a doctor and get help.”

The author further states: “Although with age, a decline in testosterone levels will occur in virtually all men, there is no way of predicting who will experience andropause symptoms of sufficient severity to seek medical help. Neither is it predictable at what age symptoms will occur in a particular individual. The author does not identify the “signs of andropause” nor does he explain when the symptoms are severe enough to seek medical help.

The purpose of this article is to define andropause and to identify the symptoms of andropause. It will also be recommended that all men, whatever their age, should have lab tests done by a competent physician trained in bioidentical hormones if they have any signs of testosterone deficiency. Further, this article will explain why all men who have “suboptimal levels of free testosterone” should consider restoring these levels to more optimal levels for prevention reasons and for quality of life reasons.

Andropause-the Male Menopause

Menopause, the time in a woman’s life of distinct hormonal changes, can be very stressful to women, both on an emotional and physical level. During this time, many women suffer from mood swings, hot flashes, body aches and other effects of declining estrogen and progesterone levels. All women endure changes caused by declining hormone levels.

However, just because a man may not feel the dramatic changes a woman often undergoes doesn’t mean that he does not experience hormonal changes. As men reach their 40s (and sometimes much earlier), most will start noticing physical and emotional changes. Abdominal fat often takes the place of formally hard muscle, even with regular physical exercise. Eight hours of uninterrupted sleep are less frequent as nocturnal visits to the bathroom to urinate increase in frequency. The thick head of hair that once covered the head becomes gray and thinner. Every night sex may turn into once a week to every-other-week sex as both interest and ability to perform decrease. Drive and ambition may also begin to fade along with libido and lean muscle mass and strength.

Many physicians state that these changes in men are an inevitable part of “normal” aging. The idea that there is such a thing as andropause is still thought of as a myth by most mainstream medical doctors. They state that since men don’t have a physical signpost (such as the cessation of menstruation seen in women), andropause does not exist. However, even though women have a clear-cut physical demarcation in their lives, other changes of menopause take place over several years. In the case of andropause, it is thought that the majority of physical, mental and emotional changes take place over 10-to-15 years.

These changes, which include declines in libido, sexual function, muscle mass and strength, increase in prostate size leading to benign prostatic hypertrophy, along with fatigue and depression, begin around age 40 for most men. It has been estimated by some researchers that today as many as 25 million American men between 40 and 55 are experiencing signs and symptoms of andropause. It has been our experience that most men over the age of 40, and many men younger than the age of 40, have low levels of free testosterone.

…read Part 2 for “Testosterone: The Key to Andropause”