More than any other season, the fall seems to have the most birthdays, doesn’t it? A September-born friend of mine jokes about being a “Christmas Party Baby”, but it turns out that there is more to it than a slap, tickle, and one too many cups of holiday cheer.
“Testosterone levels and sperm counts are highest in late fall and early winter… the peak times for human births in the Northern Hemisphere is around August or September – 9 months after the high testosterone levels of the preceeding fall.” (Heroes, Rogues, and Lovers: Testosterone and Behavior).
According to Jed Diamond in The Irritable Male Syndrome, testosterone levels cycle throughout the year: “Studies conducted in the US, France, Australia found that men secrete their highest levels of sex hormones in October and their lowest levels in April.”
The irritable male syndrome is characterized by a “state of hypersensitivity, anxiety, frustration, and anger that occurs in males and is associated with biochemical changes, hormonal fluctuations, stress, and a loss of male identity.” Diamond claims that there is a seasonal aspect to the irritable male syndrome that makes men “more irritable when days shorten and there is less light. The decline in testosterone between October and April may contribute to this irritability.”
When I read these two books a few years ago, I was left wondering why it’s taken us so long to start examining men like we do women. As I research further, I have found that male hormonal swings may be more powerful and more prevalent than female hormonal fluctuations, and yet women have been pinned as the changeable, screaming, crying, mood-and sometimes axe-swinging slaves to their monthly hormone changes.
Not only does a man’s testosterone level change throughout the year, it is constantly changing all day and every day – when men go to sleep, testosterone is on the rise hour by hour until its peak upon waking in the morning (if you don’t believe me, gentlemen, think about what you wake up with every day). By the afternoon, the hormone levels off, begins its decline, and by late afternoon, testosterone is at its lowest level – when men are said to be at their highest point of irritability.
Did you know?
- Testosterone rises in men when they win a competition and falls when they lose (this seems to be the case whether the competition is direct or observed);
- Testosterone tends to decrease talking and socializing – unless sports or sex are present;
- Men higher in testosterone tend to be dissatisfied in marriage;
- Men lower in testosterone tend to have more convincing smiles.
We’re only starting to recognize the complexity of men and the role of testosterone is fascinating, to me at least, in the way it motivates male thinking and behaviour; I think it’s important that people understand this and give a guy the benefit of the doubt because believe it or not, there are some things that men cannot necessarily control.
So fellas, before I end this week’s post, I want to tell you that because your testosterone is rising to peak right now and at any moment you could be at your most virile, I want to remind you to keep yourselves protected to prevent any surprises next fall.
Recommended reading: Effects of Testosterone On The Body