There is a piece of Physiological Literacy that should inspire optimism in every man who learns it. Indeed, it turns out that not only total testosterone, but even sperm production and quality remain largely unchanged in men during their eighth decade of life.
To illustrate this, we will use a diagram from a popular textbook of medical physiology. We need to note, however, that the diagram is partially incorrect. In fact, the levels of testosterone at birth are shown incorrectly.
However, the production of testosterone and sperm at 80 years of age is correctly shown as 100%. The diagram also shows a decline after 80, but this is a matter of discussion.
The diagram above is from a popular textbook. However, apparently, the evolution of male reproductive hormones during the lifetime is not taught appropriately at Harvard and in most of the other medical schools. Thus, popular on social media “Harvard scientist” Matthew Walker is completely illiterate in this matter.Matthew Walker, PhD, in a podcast:
“We know that testosterone in men plummets when sleep gets short. In fact, men, who are sleeping five hours or less will have a level of testosterone which is that of someone 10 years their senior.”
Rhonda Patrick, PhD:
“Wow.”
From a post on our educational and community blog:
UC Berkeley neuroscientist, who also worked in Harvard, Matthew Walker, PhD, believes that testosterone goes down with age. Rhonda Patrick, PhD, a popular online health educator for the masses, apparently agrees since her only reaction is “Wow”.
Illiterate PhD scientists depict a depressing gloomy picture of male aging. The reality is quite different and inspires optimism. This being said, health and vitality before and beyond 80 years of age is not a guarantee. Many men will decline physically and mentally, as we can see it in the example of the actor Shawn Connery.
One of our earlier comments on social networks on this topic:
Anthropology.
Behavioral and physical changes in a 86 years old Shawn Connery. In fact, testosterone and even sperm quality and production in healthy octogenarian men remain identical to the levels of 35-year-olds. A decline can be avoided. The “Optimal Phenotype” is the key.
So, what did Shawn Connery do wrong? Why did he decline? What should you do to preserve your natural biologic potential intact up to and beyond 80 years of age?
We are looking for answers to these and many other important questions. If you would like to support our work and to benefit from our current knowledge and future findings, we are inviting you to get in touch with us (see our Contact page).
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