Andropause: what really happens to men after 40

Less energy, a growing belly, a quieter desire — and ads everywhere talking about "low testosterone" and "male menopause". It's easy to believe it all comes down to one hormone that you need to boost right away. The real picture is more honest and, fortunately, more hopeful.

It's not "male menopause"

In women, menopause happens to everyone and fairly abruptly. Men have nothing like that. Testosterone declines gradually and differently for everyone, and in healthy men it barely falls until around 70.

The main reason it drops in midlife isn't age itself but how the body is living: extra fat around the waist, diabetes, short sleep and sleep apnea, chronic stress, some medicines. That's why, for most men aged 40–60, "low testosterone" is a functional and reversible state, not a permanent breakdown.

Testosterone is more often a thermometer than a cause

This is the most important point. Low testosterone usually shows that the body is struggling; it doesn't cause the struggle by itself. Raise the number without touching the cause, and you usually don't feel better.

Only sexual signs are reliably linked to low testosterone — fewer morning erections, a quieter desire. And even that link is loose. Fatigue, low mood, "brain fog" and muscle loss barely tell low testosterone apart from short sleep, depression, extra weight or the thyroid. "Check your testosterone" questionnaires work no better than a coin toss.

A ring or watch doesn't measure or calculate testosterone. Heart rate, heart rate variability and "readiness" depend on dozens of things — from sleep to last night's drink. Treat them as a recovery signal, not as a "hormone level".

What brings you back into shape the most

Your waist. The most powerful lever. Fat around the waist lowers testosterone by itself, and losing 5–10% of your weight raises it roughly in proportion. Measuring your waist matters more than watching the scales.

Sleep. Short sleep and sleep apnea lower testosterone — and that's reversible. Apnea is very common in men over 40 and is almost always undiagnosed. Loud snoring with pauses and daytime sleepiness are a reason to discuss a sleep study with a doctor.

Strength training. It improves body composition, mood and desire. It doesn't raise resting testosterone — train for strength and metabolism, not for a "spike".

Less heavy drinking. Moderate drinking doesn't lower testosterone; heavy and binge drinking do, and that too is reversible.

The good news: fixing your metabolism improves how you feel and your desire, even if the testosterone number moves only a little.

What to avoid

• "Testosterone boosters". Almost none have evidence of benefit. Tribulus, D-aspartic acid, boron and DHEA don't raise testosterone. Some of these products contain undeclared drugs.
• "Low T" clinics and online prescriptions. They often prescribe the hormone to men with normal levels and don't ask about the heart or children.
• Testosterone "for yourself". Hormone from outside works almost like a male contraceptive: it suppresses sperm production, sometimes for a long time. If you still want children, this matters even more. Testosterone is prescribed only for a confirmed deficiency — after two morning tests and a doctor's decision.

When to see a doctor

• New erection problems at 40–60 — often an early signal from the blood vessels and heart, not just hormones. More in the article "Desire and erections after 40".
• Enlarged breast tissue.
• Changes in the testicles: smaller, softer, or a new lump.
• New headaches, worse vision at the edges, nipple discharge.
• Severe low mood. Any thoughts of harming yourself — get help from a professional or a crisis line right away.

What to try this week

• Measure your waist: aim for less than half your height.
• Get up at the same time all seven days.
• An evening without alcohol.

This is general information, not a prescription. Tests and treatment are chosen by a doctor.