Decreased testosterone production is most often diagnosed during a man’s aging years. This is known as andropause, viropause, or “male menopause”.
Despite it being a huge quality of life and health issue for aging men, the word “andropause” is not used very much. It lands in the bottom 30% of words looked up on the dictionary source merriamwebster.com:

Here is how Merriam-Webster defines andropause:
Testosterone production is generally the highest in the mid-20’s. Over age 30, levels gradually decline with age, at -1% per year.
And what is a normal testosterone level? That’s covered here, so be sure to enter your email address below and sign up to know when a new article is written!
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What’s a Normal Testosterone Level?
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