Andropause: what is male menopause and is it real?

He’s not lazy. He’s not depressed — at least not without reason. He’s not “just getting older.” He’s experiencing a shift in his hormonal landscape that most men are never warned about, rarely tested for, and almost never properly treated.

Andropause — sometimes called male menopause — is the gradual decline of testosterone and other key hormones in men, typically beginning in the mid-thirties and becoming more pronounced through the forties, fifties, and beyond. Unlike female menopause, which involves a relatively rapid hormonal transition over a few years, andropause is a slow, insidious process. Testosterone levels drop by roughly one to two percent per year after the age of 30. By the time most men notice the symptoms, the decline has often been underway for a decade.

In South Africa, as elsewhere, andropause is vastly underdiagnosed. Men are culturally conditioned to push through fatigue, attribute mood changes to stress, and accept a declining body as the inevitable cost of ageing. What they are rarely told is that much of what they’re experiencing is hormonal — and that hormonal decline is not something you simply have to accept.

What happens to testosterone as men age

Testosterone is the primary male sex hormone, produced mainly in the testes under instruction from the hypothalamus and pituitary gland — a system called the HPG axis. It governs muscle mass, bone density, fat distribution, red blood cell production, mood, motivation, libido, cognitive function, and cardiovascular health. When it declines, the effects are felt across virtually every system in the body.

But testosterone alone doesn’t tell the full story. Andropause involves a broader hormonal shift: rising oestrogen through increased aromatase activity in fat tissue, declining DHEA, disrupted cortisol rhythms, reduced growth hormone, and falling thyroid function. It is a systemic hormonal reorganisation — not simply a drop in one number on a blood test.

Andropause is not a myth or a marketing concept. It is a measurable, progressive hormonal shift that affects quality of life, metabolic health, cardiovascular risk, and mental wellbeing in men from their mid-thirties onward.

The symptoms of andropause

Because testosterone affects so many systems simultaneously, the symptom picture of andropause is wide-ranging. Men often present with several of these symptoms at once — and frequently attribute them to work stress, ageing, or lifestyle factors rather than considering a hormonal root cause.

What makes andropause particularly challenging to identify is that these symptoms develop slowly and are easily rationalised. A man in his mid-forties who feels tired, unmotivated, and less sharp than he used to be is unlikely to think “hormones.” He is more likely to think “I’m just busy” or “I’m getting older.” This is precisely why andropause goes unaddressed for years — sometimes decades — in most men.

What causes testosterone to decline faster than it should

Some degree of testosterone decline with age is biologically normal. But in many men, the decline is steeper and earlier than it needs to be — driven by factors that are largely modifiable. Functional medicine focuses on identifying and addressing these accelerants, not simply replacing the hormone.

Chronic stress and cortisol excess

The same pregnenolone steal that depletes progesterone in women operates in men too. Under chronic stress, the body prioritises cortisol production over testosterone and DHEA. High cortisol directly suppresses the HPG axis, reducing the pituitary signals that instruct the testes to produce testosterone. Men under prolonged occupational, financial, or relational stress typically have significantly lower testosterone than their biological age would predict.

Excess body fat and aromatisation

Adipose tissue — particularly visceral abdominal fat — contains aromatase, the enzyme that converts testosterone into oestradiol, a form of oestrogen. The more excess fat a man carries, the more testosterone is converted to oestrogen. This creates a compounding cycle: low testosterone promotes fat storage around the abdomen, which increases aromatisation, which further lowers testosterone. Rising oestrogen in men also contributes to breast tissue development, water retention, and mood instability.

Poor sleep quality

The majority of daily testosterone production occurs during deep sleep — specifically during REM and slow-wave sleep cycles. Men who are chronically sleep-deprived, who suffer from obstructive sleep apnoea, or who have disrupted sleep architecture due to stress or shift work show significantly lower testosterone levels than well-rested men of the same age. One week of sleeping five hours per night has been shown to reduce testosterone by up to 15 percent in young healthy men. The effect in older men is compounded by already-declining production.

Insulin resistance and blood sugar dysregulation

Insulin resistance is strongly associated with low testosterone in men. High insulin suppresses SHBG, which initially appears to free up more testosterone — but chronically high insulin also impairs Leydig cell function in the testes, reducing testosterone synthesis directly. The combination of central obesity, insulin resistance, and low testosterone — sometimes called metabolic hypogonadism — is increasingly common in South African men over 40 and represents one of the most treatable forms of andropause.

Environmental oestrogens and endocrine disruptors

Xenoestrogens — synthetic compounds that mimic oestrogen — are not only a women’s issue. BPA from plastics, pesticide residues, synthetic fragrances, and oestrogenic compounds in conventionally raised meat all contribute to oestrogen load in men, further suppressing testosterone signalling and accelerating aromatisation. Men with high xenoestrogen exposure tend to show earlier and more severe andropause symptoms.

Alcohol and medication load

Alcohol is directly toxic to Leydig cells — the testosterone-producing cells in the testes. Even moderate regular alcohol consumption measurably reduces testosterone output. Several commonly prescribed medications also affect testosterone: statins (which block cholesterol, the precursor to all steroid hormones), certain antihypertensives, opioids, and corticosteroids all impair the HPG axis to varying degrees.

In functional medicine, we ask not just “how low is your testosterone?” but “why is it declining, and what is driving the decline?” The answer to that question determines the intervention.

How andropause is properly assessed

Standard GP bloodwork for suspected andropause typically measures total testosterone — and often stops there. This is insufficient. Total testosterone tells you how much is in circulation, but not how much is biologically active, how it is being metabolised, or what other hormonal factors are contributing to the clinical picture.

A comprehensive functional hormone assessment for men should include total and free testosterone, SHBG, oestradiol, LH and FSH (to assess HPG axis function), DHEA-S, prolactin, a full thyroid panel, fasting insulin and glucose, a full blood count including haematocrit, PSA where age-appropriate, cortisol rhythm, and liver function markers. This panel gives a full map of the hormonal terrain — and reveals which drivers are most relevant for that individual.

For a deeper look at how male hormones shift across the lifespan — from adolescence through andropause — the Ask Dr Olz guide to male hormonal imbalances across the lifespan provides a comprehensive clinical overview worth reading alongside your own assessment results.

A functional medicine approach to andropause

The functional medicine approach to andropause is investigative and layered. It does not begin with a testosterone prescription. It begins with identifying what is driving the decline and addressing those drivers first — because in many men, lifestyle and metabolic interventions alone produce significant improvements in testosterone within three to six months.

A well-designed andropause protocol typically includes sleep optimisation as the first priority, given its direct impact on testosterone production. This is followed by targeted stress management and HPA axis support — adaptogens like ashwagandha have good evidence for both reducing cortisol and supporting testosterone in men under chronic stress. Body composition improvement through resistance training and dietary intervention reduces aromatase activity and improves insulin sensitivity simultaneously. Nutritional support with zinc, magnesium, vitamin D, and boron provides the raw materials for testosterone synthesis.

Where testosterone replacement therapy is indicated — typically in men with genuinely low total and free testosterone, confirmed across multiple tests, with a clear symptom burden — a functional medicine approach uses bioidentical testosterone and monitors the full hormonal panel throughout treatment, not just total T levels. This includes regular monitoring of haematocrit, oestradiol, and PSA, and attention to maintaining testicular function and fertility where relevant.

The bottom line

Andropause is real, it is measurable, and — critically — it is not something men simply have to accept as the price of getting older. The fatigue, the mood changes, the body composition shifts, the declining drive: these are not character flaws or inevitable deteriorations. They are signals from a hormonal system that is under load and deserving of proper investigation.

The first step is understanding where your hormones actually stand. Take the free hormone assessment quiz to identify your hormonal imbalance pattern — and get clarity on whether andropause is driving what you’re experiencing.

Men’s hormone health is not a niche topic or a vanity concern. Testosterone decline affects heart health, bone density, mental health, and longevity. It deserves the same clinical attention as any other hormonal condition.