Andropause in Singapore: Symptoms, Diagnosis and Treatment

Andropause, sometimes called male menopause, describes the gradual decline in testosterone that many men experience from their late 30s onward. Unlike menopause, which happens over months as the ovaries stop producing oestrogen, andropause is a slow drift that can take a decade or more to become noticeable. By the time a man in Singapore walks into a clinic complaining of low energy, reduced sex drive or unexplained weight gain, the hormonal changes have often been building quietly for years.

The medical term for this condition is late-onset hypogonadism (LOH), and it is more accurately understood as a mismatch between what a man's body needs and what his testes are still producing. It is not a universal experience - some men in their 70s have testosterone levels comparable to men half their age - but a meaningful proportion of Singaporean men will develop symptomatic low testosterone as they get older, and the condition is frequently under-recognised because its symptoms overlap so heavily with normal ageing, stress and lifestyle-related fatigue.

What andropause actually feels like

The symptoms of andropause fall into three broad groups: sexual, physical and psychological. Not every man experiences all of them, and the severity varies considerably.

Sexual symptoms typically include reduced libido, fewer spontaneous morning erections, and sometimes 勃起不全. It is worth noting that testosterone deficiency is only one of many causes of erectile difficulty, and the two conditions do not always travel together.

Physical symptoms include persistent fatigue, reduced muscle mass and strength despite continued exercise, increased body fat (particularly around the abdomen), reduced bone density, hot flushes, and disrupted sleep. Some men also notice thinning body hair or a reduction in the frequency of shaving.

Psychological symptoms are frequently the most disruptive and the least likely to be attributed to a hormonal cause. These include low mood, irritability, poor concentration, reduced motivation, and a general sense of "flatness" that men often describe as just feeling like a different person. Because these symptoms mirror depression, anxiety and burnout, many men are treated for mood disorders for months or years before anyone checks their testosterone.

Diagnosis: symptoms plus blood tests, not one or the other

A crucial point that gets lost in online discussions is that andropause is never diagnosed on symptoms alone, nor on a single blood number alone. Singapore doctors follow the same principle used internationally: a man needs both consistent, bothersome symptoms and confirmed low testosterone on repeated blood testing before a diagnosis of late-onset hypogonadism is made and treatment considered.

Morning total testosterone. Testosterone follows a daily rhythm, peaking in the early morning and falling through the day. Blood should therefore be drawn between roughly 7am and 10am, ideally after an overnight fast, and on two separate occasions to rule out a one-off dip caused by illness, poor sleep or stress. Total testosterone below approximately 8-12 nmol/L (roughly 231-346 ng/dL, with exact clinic reference ranges varying slightly) is generally considered biochemically low, though the clinically relevant cut-off is debated and doctors weigh the number against symptoms rather than treating a lab value in isolation.

Sex hormone-binding globulin (SHBG) and free testosterone. Most testosterone in the blood is bound to SHBG and albumin, leaving only a small free fraction biologically active. Men who are obese, diabetic or have metabolic syndrome - all common in Singapore's population - often have lower SHBG, which can make total testosterone look falsely reassuring or falsely low. Calculating or directly measuring free testosterone gives a more accurate picture in these cases and is a standard part of the testosterone deficiency work-up here.

LH and FSH. Luteinising hormone and follicle-stimulating hormone are produced by the pituitary gland and tell the testes to make testosterone and sperm. Measuring them helps distinguish primary hypogonadism, where the testes themselves are failing and LH/FSH are elevated, from secondary hypogonadism, where the problem originates in the pituitary or hypothalamus and LH/FSH are low or inappropriately normal. This distinction matters because secondary causes sometimes point to a treatable underlying issue such as a pituitary tumour, obesity-related suppression, or medication effects, rather than the testes simply wearing out with age.

Prolactin. An elevated prolactin level can suppress the entire hypothalamic-pituitary-testicular axis and cause symptoms that mimic andropause almost exactly, including low libido and erectile dysfunction. Checking prolactin is a routine step to exclude this less common but important cause before committing to long-term testosterone therapy.

Beyond the hormone panel, doctors will typically also check a full blood count, fasting glucose or HbA1c, lipid profile, and prostate-specific antigen (PSA) in men over 40 or 50, since these results influence both the diagnosis and the safety of any treatment that follows. A health screening that covers these markers alongside the hormone panel gives a much fuller picture than testosterone alone.

Treatment options available in Singapore

Once a diagnosis is confirmed and other causes of secondary hypogonadism - substance use, certain medications, uncontrolled diabetes - have been addressed or excluded, testosterone replacement therapy (TRT) can be considered. Several HSA-registered formulations are available locally, each with its own trade-offs.

Formulation	How it works	Typical frequency	Considerations
Transdermal gel	Applied daily to skin, absorbed steadily	Once daily	Convenient, mimics natural rhythm, risk of transfer to others via skin contact
Intramuscular injections (short-acting)	Injected into muscle	Every 2-3 weeks	Effective, but levels can peak and trough noticeably
Intramuscular injections (long-acting)	Injected into muscle	Every 10-14 weeks	Fewer clinic visits, more stable levels once established
Oral testosterone	Taken as a capsule	Once or twice daily	Newer formulations avoid old liver concerns, but availability and cost vary

There is no single "best" option - the right choice depends on a man's lifestyle, needle-aversion, budget, and how his body responds. Doctors generally start with a lower dose, recheck bloods after 6-12 weeks, and adjust from there. Consultation fees at Hisential start from S$50 after GST, with treatment costs varying by formulation and dosage.

Monitoring once treatment starts

Testosterone therapy is not something to start and forget. Regular follow-up - covered in more depth in our article on TRT monitoring - checks that testosterone levels are in a healthy range, that haematocrit (a measure of red blood cell concentration) has not risen too high, and that PSA remains stable. Blood pressure, mood, and symptom improvement are also tracked at each visit.

What testosterone will not fix

This is perhaps the most important message for men considering treatment: testosterone replacement corrects a hormonal deficiency, but it is not a universal cure for ageing, stress or an unhealthy lifestyle. It will not undo years of poor sleep, heavy drinking, or a sedentary routine on its own. It may improve libido and energy, but if erectile dysfunction is caused by vascular disease, diabetes or anxiety rather than low testosterone, a man may still need a PDE5 inhibitor or other targeted treatment for 勃起不全 alongside hormone therapy.

Similarly, testosterone alone rarely resolves depression that has other roots, and men with significant mood symptoms often do best with a combined approach involving their doctor and, where appropriate, a mental health professional. Weight gain associated with andropause also benefits from a structured approach to diet and activity - testosterone can make it easier to build muscle and lose fat, but it does not replace the effort of a weight loss programme built around nutrition and exercise.

Men considering treatment should also be realistic about hair and skin changes. Testosterone therapy does not reverse hair loss that follows a genetic pattern, and in some men it can accelerate it. Skin changes such as acne can occasionally worsen during the early months of treatment as oil gland activity increases, though this usually settles.

Building a realistic treatment plan

The most effective approach to andropause treats it as one part of a broader picture of a man's health, not an isolated hormone problem. This usually means combining testosterone therapy, where indicated, with attention to sleep, weight, cardiovascular risk factors and mental wellbeing. Many men also benefit from addressing conditions that commonly cluster with low testosterone, including benign prostatic hyperplasia and metabolic syndrome, both of which are more common in the same age group.

Because andropause develops gradually and its symptoms are easy to dismiss, the first step is usually simply getting tested rather than guessing. A morning blood draw, reviewed by an SMC-registered doctor alongside your symptoms, is the only reliable way to know whether what you are experiencing is genuinely low testosterone or something else that deserves its own treatment path.

Common questions

At what age does andropause typically start?

There is no fixed age. Testosterone levels begin a gradual decline from around age 30, but symptomatic andropause most commonly becomes noticeable from the late 40s through the 60s. Some men never develop symptoms significant enough to need treatment.

Can andropause be confirmed with a single blood test?

No. Because testosterone fluctuates day to day and even hour to hour, Singapore clinics require at least two morning blood tests showing consistently low levels, taken alongside a review of symptoms, before diagnosing late-onset hypogonadism.

Is testosterone therapy safe long-term?

For men who are correctly diagnosed and monitored regularly, current evidence does not show a clear increase in prostate cancer risk at physiological doses. However, ongoing monitoring of PSA, haematocrit and cardiovascular risk factors is essential, which is why supervised treatment matters.

Will TRT help me lose weight?

Testosterone therapy can improve muscle mass and make fat loss somewhat easier, but it is not a weight loss treatment on its own. It works best combined with dietary changes and regular exercise.

What happens if I stop treatment?

Symptoms of low testosterone typically return once treatment is stopped, since TRT does not cure the underlying decline in production. Some men also experience temporary suppression of their own natural testosterone production, which a doctor can help manage.

Can younger men get andropause?

Genuine late-onset hypogonadism is uncommon before the late 30s, but younger men can develop low testosterone due to obesity, chronic illness, certain medications or testicular problems. The same diagnostic process applies regardless of age.

Lifestyle factors that mimic or worsen andropause

Before attributing every symptom to hormone decline, it is worth examining lifestyle contributors that are extremely common in Singapore's fast-paced work culture. Chronic sleep deprivation, high alcohol intake, and long periods of sedentary desk work can all suppress testosterone production independently of age. Obesity is particularly significant, because fat tissue converts testosterone into oestrogen through an enzyme called aromatase, creating a cycle where weight gain lowers testosterone, which in turn makes further weight gain more likely. This is one reason doctors often recommend addressing body composition alongside any hormonal work-up, since correcting it sometimes raises testosterone enough that formal replacement therapy becomes unnecessary.

Stress also plays an underappreciated role. Persistently elevated cortisol, the body's primary stress hormone, can interfere with the signalling pathway between the brain and testes, reducing testosterone output over time. Men working demanding jobs with irregular hours, frequent travel or high-pressure targets are a population worth watching closely for this reason, even in their 30s and 40s when classic andropause would not typically be expected.

Why untreated andropause matters beyond symptoms

Some men are inclined to dismiss andropause symptoms as simply part of getting older and choose to live with them rather than seek treatment. While this is a reasonable personal choice for mild symptoms, it is worth understanding the longer-term consequences of leaving significant testosterone deficiency unaddressed. Low testosterone is associated with reduced bone mineral density over time, increasing fracture risk in later decades. It is also linked with adverse changes in cholesterol and blood sugar metabolism, potentially compounding cardiovascular and diabetes risk that many Singaporean men already carry. Persistent low mood and low energy can also affect relationships, work performance and overall quality of life in ways that compound gradually rather than appearing suddenly.

This does not mean every man with slightly low testosterone needs treatment - the decision should always weigh the severity of symptoms against the practicalities and modest risks of therapy. But it does mean that dismissing symptoms outright without at least getting a proper blood work-up may mean missing a genuinely treatable and reversible cause of years of reduced wellbeing.

Working with your doctor over the long term

Andropause treatment is rarely a single decision made once. It typically involves an initial diagnostic phase, a treatment trial with close monitoring over the first three to six months, and then periodic long-term follow-up to ensure the chosen approach continues to suit your circumstances as they change. Doses that work well at 45 may need adjustment at 55, and health priorities - whether that's fertility, cardiovascular risk, bone health or simply quality of life - can shift over a decade of treatment.

Choosing a clinic and doctor you can return to consistently for this journey matters more than many men realise at the outset. Consistency in monitoring, a clear record of past blood results, and a doctor who knows your history make it far easier to catch problems early and fine-tune treatment as your needs evolve.