About testosterone

Testosterone Levels by Age: The Inarguable Link

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testosterone levels and ageIt is universally agreed that testosterone is the primary male hormone that is responsible for many things including building lean muscle mass, providing thick bone density, the development of the sex organs, maintaining a high libido, among many others. Testosterone is ultimately what gives us men, all of our male features.

With age, testosterone production begins to decline and this is perfectly normal. All forms of testosterone are affected by age including free testosterone (the type that is not bound to anything usually subsides much more quickly). Many studies have revealed that total testosterone subsides by more than 30% in most healthy males aged between 30 and 70. Free testosterone levels take the brunt of the decline, because they can drop by more than 50%.

This drop in testosterone is commonly known as andropause, hypogonadism, or simply, low testosterone. Thanks to a leading professor, Dr. Apr. A. Vermeulen (who graduated and subsequently completed her PHD at UGhent), devised a highlighting the link between age, total testosterone, free testosterone, and SHBG levels. Her table highlights the decline in total testosterone levels accordingly with age. Moreover, the SHBG is shown to increase, the more a person ages, which in turn has a devastating impact on free testosterone levels.

Below you can see Dr. Apr. A. Vermeulen’s table that she devised in 1996:


Age # Subjects Total Test. Stand. Dev. Free Test. Stand. Dev. SHBG Stand. Dev.
25-34 45 617 170 12.3 2.8 35.5 8.8
35-44 22 668 212 10.3 1.2 40.1 7.9
45-54 23 606 213 9.1 2.2 44.6 8.2
55-64 43 562 195 8.3 2.1 45.5 8.8
65-74 47 524 197 6.9 2.3 48.7 14.2
75-84 48 471 169 6.0 2.3 51.0 22.7
85-100 21 376 134 5.4 2.3 65.9 22.8


What Does Low Testosterone Do?

what does testosterone doLow testosterone brings with it a whole host of unwanted changes in the body, sometimes including a complete re-compositioning of the figure, such as increased body fat, especially around the belly area, and a depleting muscle mass. These problems lead on to more serious ailments such as heart complications, liver and kidney disease, as well as cardiovascular complications. It is no great surprise that falling testosterone levels by age, or triggered by certain illnesses can increase the onset of diabetes, metabolic problems, and cardiovascular disease.

If that’s not enough, how about, low bone density, unpredictable mood swings, feelings of depression, and difficulties in achieving an erection?

Can I Counterbalance My Testosterone Levels by Age?

how do I counterbalanceThere are a number of steps that can be taken to try and alleviate low testosterone levels by age. Testosterone replacement therapy is a popular option that many men choose to undergo, because it is known to alleviate many of the symptoms associated with the condition. Men undergoing testosterone replacement therapy have reported experiencing improvements in the libido, more strength, improved muscle mass, enhanced bone density, and an all-round improved body composition. Other more serious ailments such as a poor cognitive function, cardiovascular disease, and metabolic complications can also be relieved.

Do Low Testosterone Levels by Age Affect Everyone?

does it affect everyoneAlthough every man will experience a testosterone fall during his life span, not all men experience abnormally low testosterone that requires treatment. Research has shown that only one in five men as she experience testosterone deficits that fall short of the “normal range”.

Unsurprisingly, a large percentage of males that fall within the lower end of the “normal range” can still experience many of the symptoms often associated with hypogonadism. These men are said to be perfect candidates for undergoing testosterone replacement therapy.

What Is the “Normal Range”?

what is the normal range of testosteroneNormal testosterone range is said to be between 270 ng/dL and 1080 ng/dL. As you can see, there is quite a gap between the lower end and the higher end of the “normal range” of testosterone. For instance, Subject A, can have three times as much testosterone as Subject B, and a physician looking at the results can still say they both have “normal” testosterone levels. Falling testosterone levels by age can also be a crucial reading when looking at current symptoms.

Unfortunately, low testosterone is mainly defined as anything falling between 270 ng/dL, and if you happen to fall above that threshold, you can experience low testosterone symptoms, and your doctor will still tell you that you’re levels are normal.

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Nick Evans is a fully qualified nutritionist and personal trainer. Nick is also currently undertaking a PhD in Food Science at a leading Scottish University. Nick has been a keen bodybuilder throughout his adulthood and is well-versed with health supplements, hence he feels he is in a good position to offer expert advice on testosterone boosters.