Say "hormonal imbalance" and most people think of women: periods, pregnancy, the menopause. Men have hormones too, and they drift out of balance just as easily. The difference is that in men it often goes unrecognised for years, because nobody thinks to look.
Part of the problem is that the subject has no obvious home. It sits somewhere between general health, mental health and lifestyle, so men bounce between explanations without getting an answer. Below I'll go through what a hormonal imbalance actually means in a man, what usually causes it, what it feels like, and how we find out what's going on.
What a hormonal imbalance actually is
Put simply, one or more of your hormones has moved outside the range your body needs to work normally. Low testosterone is the one everyone has heard of. But testosterone is part of a network that also includes oestrogen, cortisol, thyroid hormones, prolactin, growth hormone, insulin and several others, and they all affect each other. When one goes wrong, the others often follow.
In practice, when a man is told he has a hormonal imbalance, it's usually one of these:
- Low testosterone (hypogonadism). The most discussed.
- High oestrogen, often relative to testosterone. Talked about less, but common.
- Thyroid problems (under or overactive). Easy to miss, because the symptoms overlap with almost everything else.
Cortisol problems, raised prolactin and growth hormone deficiency all happen too. They're just much less common in the men we see.
The most common causes
It's rarely one thing. Most men I see have two or three of the following stacking up on each other.
Ageing
On average, a man's testosterone falls by roughly 1-2 percent a year from about 30. Plenty of men stay comfortably in the normal range and never notice. Others drift into clinically low territory in their 40s, 50s or later, and that's when symptoms start.
Age also changes how well the body responds to the hormones it has. A 55-year-old with a "normal" level can still have symptoms that a 30-year-old with the same number wouldn't, because his body is using that testosterone differently.
Chronic stress
Stress that never lets up keeps cortisol high, and high cortisol suppresses testosterone production via the hypothalamic-pituitary-gonadal axis (the chain of signals from brain to testes). Men who've been under pressure for years often have measurably low testosterone on top of the obvious signs of stress.
I think this is one of the most underrated causes we deal with. A stressful month won't do it. A stressful decade can.
Poor sleep
Most of your testosterone is made while you sleep, particularly in deep and REM sleep. Regularly getting less than seven hours, or sleep that's constantly broken, lowers testosterone over time. Sleep apnoea is especially damaging, and it often goes undiagnosed.
Excess body fat
Body fat (adipose tissue) contains an enzyme called aromatase, which turns testosterone into oestrogen. So men carrying a lot of extra weight, especially round the middle, often end up with lower testosterone and higher oestrogen than they should have. It becomes a loop. Low testosterone makes weight harder to shift, more weight means more aromatase, and more aromatase pulls testosterone down further.
Alcohol
Heavy drinking suppresses testosterone directly and wrecks the sleep that would otherwise help you recover. You don't need to be a heavy drinker for it to matter, though. Two or three drinks most evenings, kept up for long enough, has a measurable effect.
Certain medications
Some everyday prescriptions affect testosterone or other hormones. Opioids are the big one; they're strongly suppressive. Some antidepressants, blood pressure tablets and corticosteroids can have an effect as well. Previous anabolic steroid use can also leave natural production suppressed long after the last cycle. If your symptoms started after you began a long-term medication, raise it with the doctor who prescribed it.
Underlying medical conditions
Plenty of medical conditions can throw hormones out. The ones we see most are type 2 diabetes and pre-diabetes, thyroid disease, testicular damage or dysfunction, and long-term illness, particularly anything that causes a lot of inflammation. Pituitary problems are rare but important not to miss, and some genetic conditions, Klinefelter syndrome for example, cause it too.
That's why a proper workup looks well beyond testosterone. If a man's testosterone is low because his thyroid is failing, he needs his thyroid treated. A testosterone prescription would be treating the wrong thing.
Environmental and dietary factors
Average testosterone levels in men have been falling for decades, even after you allow for age. Why is still argued over. Some researchers blame environmental chemicals such as plasticisers, endocrine disruptors and microplastics. Others point to diet, or to how we live now: less activity, more chronic stress, more processed food and less time outdoors.
Whatever the explanation, the trend itself is real. On average, a 40-year-old man now has measurably lower testosterone than his father did at the same age.
The symptoms
The symptoms are frustratingly vague, which is a big reason they get missed. Most men put them down to being tired, stressed, older or out of shape. Exactly which ones you get depends on which hormones are out, but these are the ones that come up most:
- Persistent fatigue, even after rest
- Brain fog, difficulty concentrating, poor memory
- Mood changes: low mood, irritability, reduced motivation
- Reduced libido, weaker erections, fewer morning erections
- Weight gain, particularly around the middle
- Difficulty building or maintaining muscle
- Poor sleep quality
- Hot flushes or trouble regulating temperature
- Increased breast tissue (gynaecomastia)
- Hair loss (beyond what you'd expect from your genetics)
- Reduced strength and exercise performance
If three or more of these have crept in over the past year or two, and nothing big has changed in your life to explain them, it's worth getting your hormones looked at.
How a proper investigation works
One testosterone reading isn't an investigation. A good comprehensive blood test should include:
- Total testosterone: the main measure of how much you produce
- Free testosterone: the biologically active portion
- SHBG: a binding protein that affects how much testosterone is free
- Oestrogen (oestradiol): when it's too high it can cause significant symptoms, even with normal testosterone
- LH and FSH: pituitary signals that tell us whether the problem is in the testes (primary) or the brain (secondary hypogonadism)
- Prolactin: high levels suppress libido and testosterone
- Thyroid function (TSH, T3, T4): thyroid problems can look exactly like low testosterone
- Cortisol: chronic stress and adrenal function
- PSA: prostate marker, a baseline before any TRT
- Full blood count, liver, kidney, lipids: general health markers
- Vitamin D, B12, ferritin: deficiencies that affect energy and hormone production
You need them side by side to get a useful answer. I regularly see men who've been told their "testosterone is normal" when their oestrogen was high, their SHBG was tying up most of their testosterone, or their thyroid was the real problem all along.
Then there's interpretation. Reference ranges are wide, and a level near the bottom of "normal" can be fine for one man and too low for another, depending on his age, symptoms and history. Results have to be read against the person in front of you, not just against the range printed on the report.
Treatment options
What we do depends entirely on what the tests show. "Hormonal imbalance" covers lots of different problems, so there's no single treatment for it.
If lifestyle is the main driver, the things that work best are rarely exciting: better sleep, less alcohol, losing weight if you need to, more resistance training and getting chronic stress under control. In some men that alone brings levels back to normal.
If hypogonadism is confirmed (your body isn't making enough testosterone), TRT is the standard treatment. If fertility matters to you, tell us early. HCG is sometimes added to help preserve testicular function and fertility, though how useful it is depends on the cause.
If high oestrogen is the issue, treatment depends on why. Sometimes lifestyle changes are enough. Occasionally a medication called an aromatase inhibitor is appropriate, usually alongside TRT.
If your thyroid isn't working properly, treating it often clears up the symptoms that looked like low testosterone too. Giving testosterone to someone with an undiagnosed thyroid problem means treating the wrong condition.
If prolactin is significantly raised, that needs looking into in its own right. It can have specific causes that need specific treatment.
Every one of these comes back to the same rule. Get the diagnosis right first, then treat what you've found.
Where this leaves you
Hormonal imbalances in men are common and treatable. They're also missed for years, because the symptoms are vague and men tend to just get on with it. If something has shifted and you've got a handful of the symptoms above, a proper hormone test is the most useful thing you can do next.
Once you have real numbers, you can actually decide something. That might mean lifestyle changes, targeted treatment, personalised TRT if it's appropriate, or simply finding out your hormones are fine and the cause lies elsewhere. Any of those beats another few years of guessing.
Want to know where your levels sit?
Arc TRT offers home finger-prick testing and enhanced clinical panels, with results reviewed by a UK doctor. Over 3,000 men tested and counting.
This article is for general information and does not replace personalised medical advice. Speak to a qualified clinician about your individual circumstances.
Keep reading
For the complete picture, see our full guide to TRT in the UK, covering eligibility, blood test thresholds, NHS and private routes, costs and monitoring. If you are still working out whether any of this applies to you, start with the symptoms of low testosterone.
