What are the symptoms of high testosterone?

Genuinely high natural testosterone is uncommon in men and rarely causes problems. When men do show "high testosterone" signs, the cause is almost always anabolic steroids or prescribed testosterone, not their own biology.

This is one of the most misunderstood questions in men's health. Many men worry their testosterone is "too high", yet naturally high levels seldom produce symptoms and almost never need treating. Part of the confusion is that men conflate feeling driven, irritable or wired with "high T", when the real cause is often stress, stimulants, poor sleep or anxiety. The picture only changes with hormones taken from outside the body, which can push levels several times higher than anything you would make on your own. The symptoms people pin on high testosterone are really the symptoms of that excess:

• Acne and oily skin
• Irritability, aggression or mood swings
• Trouble sleeping
• Thicker blood, measured as a raised haematocrit; doctors usually act once it climbs above about 54 per cent, because it raises clot risk
• Shrinking testicles and a low sperm count, specifically when external steroids switch off natural production
• Faster hair loss in men genetically prone to it

It is also worth knowing what high testosterone is not. A high reading on a single test can simply reflect timing, since testosterone peaks in the morning, or a lab using a wide reference range. One number rarely means anything on its own. High testosterone is far more common, and far more clinically relevant, in women, where it is a hallmark of PCOS. In men, rare conditions such as certain tumours or adrenal problems can raise androgens, but they are unusual and arrive with other clues.

What to do: if you suspect high testosterone, a blood test for total and free testosterone plus haematocrit settles it quickly, ideally repeated on a separate morning. And if you are on TRT and noticing acne, thick blood or shrinking testicles, that is not a sign of too much vitality; it is a dose-and-monitoring conversation with your prescriber. See is TRT safe long term.