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Low Testosterone Symptoms in Men: 12 Signs, Real Causes and When to Get Tested

  • low testosterone
  • men's health
  • hormones

Low sex drive, constant tiredness, weaker erections, a growing belly: low testosterone is easy to blame on stress or age. A doctor explains the 12 signs, the real causes and when a blood test makes sense.

A battery glowing red at 10 percent charge, a metaphor for the low energy that low testosterone can cause

The most common low testosterone symptoms in men are a falling sex drive, weaker or fewer erections, constant tiredness, loss of muscle with a growing belly, low mood and thinning body or facial hair. One sign alone proves little; a pattern of several does. A simple morning blood test confirms it, and low testosterone is common and treatable.

If you have been feeling "not like yourself" for a while, you are not imagining it, and you are not alone.

Testosterone is the main male hormone. It drives sex drive, helps make sperm, and keeps your muscles, bones, energy and mood in shape. Many Hindi speakers know the problem as "testosterone ki kami". Doctors call it testosterone deficiency or male hypogonadism.

Below you will find the 12 signs, the real causes, the conditions that look like low testosterone but are not, what a normal level is, how testing works in India, and when to see a doctor. Low testosterone is one of several common sexual problems in men, and it is one of the easier ones to check. If you already know your level is low, our guide on how to raise testosterone safely covers the fixes in detail.

What are the symptoms of low testosterone in men?

The signs of low testosterone in men usually come as a cluster: less interest in sex, softer or fewer erections, tiredness that sleep does not fix, weaker muscles with a bigger belly, low mood and less body hair. Most men notice two or three together; one sign on its own rarely means low testosterone.

Here are the 12 signs doctors look for:

  1. Low sex drive (less interest in sex than you used to have)
  2. Erection problems (weaker erections, or trouble keeping them)
  3. Fewer morning erections
  4. Constant tiredness and low energy
  5. Loss of muscle and strength
  6. More belly fat
  7. Weaker bones
  8. Low mood or irritability
  9. Poor focus or memory
  10. Less body and facial hair
  11. Smaller or softer testicles
  12. Low sperm count

These signs develop slowly, over months or years, so many men blame them on work stress, age or "just getting older". That is why it helps to look at the whole picture instead of any single symptom. The sections below group the signs so they are easier to check against your own life.

Sexual signs

Low sex drive. This is often the first and clearest sign. Testosterone is the main hormone behind desire, so when it falls, you may simply stop thinking about sex, even if your relationship is good. Low desire has other causes too, from stress to age, and our guide on why sex drive drops with age explains what is normal.

Erection problems. Testosterone does not create an erection by itself (that is mainly about blood flow), but it supports the nerves and tissue that make erections work. Men with low levels often notice erections that are softer or fade sooner. One small Italian study of men with erection problems linked low testosterone with scarring (fibrosis) of the erection tissue in ageing men, though a study that small cannot prove cause. The AUA guideline also notes that low testosterone is a risk factor for heart and blood vessel disease, which affects erections too.

Fewer morning erections. Waking up with an erection is a sign that your nerves, blood flow and hormones are working. If these have become rare, it is worth mentioning to a doctor.

Low sperm count. Your testes need their own testosterone to make sperm. Some men only find out about low testosterone when they are tested because a pregnancy is not happening.

Smaller or softer testicles. When the testes make less testosterone over a long time, they can shrink a little or feel softer. Any testicle pain, lump or sudden change needs a doctor's check, whatever the cause.

Body signs

Car fuel gauge pointing to empty, a metaphor for the constant tiredness that low testosterone can cause

Constant tiredness. Not the tiredness after a long day, but a flat, drained feeling that sleep does not fix. Many men describe losing their drive to do things they used to enjoy.

Loss of muscle and strength. Testosterone helps build and keep muscle. You may find you are weaker in the gym, or losing muscle even though your routine has not changed.

More belly fat. Low testosterone makes it easier to gain fat, especially around the stomach. Belly fat in turn converts testosterone into oestrogen, which pushes testosterone down further. This loop is one of the most common patterns doctors see in Indian men in their 30s and 40s.

Weaker bones. Testosterone helps keep bones dense. Long-term low levels raise the risk of thin bones (osteoporosis) and fractures, which men rarely think about until one happens.

Less body and facial hair. A beard that grows more slowly, or thinning hair on the chest, legs or pubic area, can be a sign. This is different from a receding hairline, which is covered in the FAQ below.

Less common body signs include hot flushes (sudden waves of heat) or night sweats (usually when levels are very low) and breast tissue growth, called gynaecomastia. Breast swelling always deserves a doctor's visit.

Mood, mind and sleep signs

Low mood or irritability. Some men with low testosterone feel flat, short-tempered or low for weeks. This can look a lot like depression, and the two can overlap.

Poor focus or memory. Trouble concentrating at work or forgetting small things is often reported, although the research on testosterone and thinking is mixed.

Poor sleep is part of the picture too. It works both ways: low testosterone can disturb sleep, and bad sleep lowers testosterone. Keep in mind that tiredness, low mood and poor focus have many causes, so these three signs matter most when they come with the sexual signs above.

What causes low testosterone in men?

Age lowers testosterone slowly, but in many men the bigger drivers are extra belly fat, diabetes or prediabetes, poor sleep or sleep apnoea, heavy drinking, opioids and anabolic steroids from the gym. Less often, a pituitary problem, high prolactin or an old testicular injury is behind it.

This is the most useful part to understand. The same symptoms can come from very different causes, and the cause decides the fix. That is how Raaz MD approaches every case: find the root cause first, instead of handing everyone the same pills.

Age

Testosterone falls gradually from around your 30s or 40s. It is a slow decline, not a sudden "male menopause". A long-running American study (the Baltimore Longitudinal Study of Aging) found that the share of men with levels in the low range rose with each decade, which the table further down shows. If erections are your main worry, our guide to erection problems with age explains what is normal at your age and what is not.

Belly fat and weight

Extra fat, especially around the stomach, is one of the strongest and most fixable causes. Fat tissue turns testosterone into oestrogen and disturbs the signals from the brain that tell the testes to make it. Indian men tend to carry fat around the belly even at a "normal" weight, so a growing waistline matters more than the number on the scale. The good news: a 2024 review in Therapeutic Advances in Urology found that several randomised trials show testosterone and sexual function improve when overweight men lose weight through diet and exercise.

Diabetes and prediabetes

This is a major cause in India. A study of 900 Indian men with type 2 diabetes, published in the Indian Journal of Endocrinology and Metabolism, found hypogonadism in 20.7% of them, about 1 in 5. The same study found that half the men had symptoms but normal testosterone, which shows why a blood test matters.

Even prediabetes counts. A 2026 study from North India, in the same journal, tested 103 men aged 18 to 50 with prediabetes and found that 53.4% had low testosterone. If your sugar is borderline, read our guide on diabetes and low testosterone, which also covers the effect on erections.

Poor sleep and sleep apnoea

Testosterone rises during sleep, which is why levels are highest in the morning. In a small study published in JAMA, healthy young men who slept only 5 hours a night for one week had 10 to 15% lower daytime testosterone. Regularly sleeping less than 6 hours, working night shifts, or having sleep apnoea (loud snoring with pauses in breathing, common in overweight men) can all push levels down. If your partner says you snore and you wake up unrefreshed, mention it to your doctor.

Alcohol, opioids and gym steroids

Heavy, regular drinking damages the testes and the liver, and both lower testosterone. Our guide explains how alcohol lowers testosterone and affects erections, and how much is too much.

Long-term use of opioid painkillers also suppresses testosterone, and the AUA guideline advises checking levels in men who take them regularly.

Anabolic steroids deserve a special warning because gym culture in India makes them easy to get. When you inject or swallow testosterone-like drugs, your body stops making its own. After you stop, natural production can stay low for months, sometimes longer, leaving you with low testosterone, shrunken testicles and poor fertility. Unlabelled "boosters" sold at gyms and online sometimes contain hidden steroids too.

Gland problems and past testicular injury

Testosterone production is controlled by the pituitary gland in the brain. A pituitary problem, or a high level of the hormone prolactin, can lower testosterone. So can an old injury to the testes, mumps after puberty, undescended testes in childhood, chemotherapy or radiation, and some genetic conditions. These causes are less common, but they are why young men with symptoms deserve a proper check, not a brush-off.

Could it be something other than low testosterone?

Yes, often. An underactive thyroid, depression, anaemia, vitamin D or B12 deficiency, and erection problems caused by diabetes, high BP, cholesterol, smoking or gutkha can all cause the same tiredness, low desire or weak erections with a completely normal testosterone level.

This is why guessing, or buying a booster online, so often fails. Here are the common look-alikes:

  • Underactive thyroid (hypothyroidism): tiredness, weight gain, low mood and low desire. Our guide to thyroid problems that look like low testosterone explains how to tell them apart.
  • Depression and anxiety: low mood, poor sleep, low desire and erection trouble, all without any hormone problem.
  • Anaemia: low haemoglobin causes tiredness, breathlessness and poor stamina.
  • Vitamin D or B12 deficiency: both are very common in India and cause fatigue, aches and low energy. B12 deficiency is especially common in vegetarians.
  • Erection problems from blood vessel disease: diabetes, high blood pressure, high cholesterol, smoking and chewing tobacco like gutkha and khaini narrow the blood vessels that fill the penis. Testosterone can be normal, and the erection problem is still real.
  • Stress, poor sleep and relationship strain: enough on their own to flatten desire for weeks.
  • Some medicines: certain antidepressants, BP tablets and hair-loss drugs can lower desire or affect erections. Never stop a prescribed medicine on your own; ask the doctor who prescribed it.

Often it is two things at once, for example belly fat plus prediabetes plus poor sleep. Fixing only one piece rarely works.

Not sure which of these fits you? Tiredness, low desire and weak erections can come from low testosterone, thyroid, sugar or stress. Take the free 2-minute Men's Test. It is private, and it helps you see which root cause best matches your symptoms before you spend money on tests or tablets.

What testosterone level is normal, and does it drop with age?

Most doctors treat a morning total testosterone below about 300 ng/dL (10.4 nmol/L) as low. In healthy young men, the normal range is roughly 264 to 916 ng/dL. Levels fall slowly with age, and by 70 about 3 in 10 men have levels in the low range.

Use the table below as a general guide to reading your report, not as a diagnosis.

Your morning total testosteroneWhat it usually means
Below 300 ng/dL (10.4 nmol/L) on two separate morning testsLow. Along with symptoms, this supports a diagnosis of testosterone deficiency (AUA guideline)
Around 264 to 916 ng/dL (9.2 to 31.8 nmol/L)The harmonised normal range for healthy, non-obese men aged 19 to 39 (Travison and colleagues, Journal of Clinical Endocrinology and Metabolism, 2017)
Just above or just below 300 ng/dLBorderline. Your doctor may repeat the test, check free testosterone (especially if you are overweight) and weigh your symptoms

Labs use slightly different methods, so always compare your number with the reference range printed on your own report. Indian labs report in either ng/dL or nmol/L. To convert, divide ng/dL by 28.84 to get nmol/L, or multiply nmol/L by 28.84 to get ng/dL.

How common are low levels at different ages? The Baltimore study, which followed 890 men over many years, found this:

AgeMen with total testosterone in the low range
Over 60About 20% (1 in 5)
Over 70About 30% (3 in 10)
Over 80About 50% (1 in 2)

Source: Harman and colleagues, Journal of Clinical Endocrinology and Metabolism, 2001. General reference only.

You may see "normal testosterone by age" charts online with neat numbers for every decade. Be careful with them. Neither the American Urological Association nor the Endocrine Society publishes such a chart, and most of those figures have no clear source. What matters is your number, measured correctly, together with your symptoms.

How is low testosterone tested?

With a simple blood test for total testosterone, taken early in the morning when levels are highest. Because levels vary from day to day, doctors confirm a low result with a second morning test on a different day before diagnosing anything.

Doctor writing a prescription for a morning testosterone blood test, with a stethoscope on the desk

The American Urological Association guideline (published 2018, validity confirmed 2024) sets out the standard approach:

  1. Test in the morning. Give your sample early, ideally before about 10 am. An evening result can look falsely low.
  2. Test twice. A diagnosis needs two low early-morning results on separate days. One low number after a bad night or an illness is not enough.
  3. Match the number with symptoms. Low testosterone is diagnosed only when a low level comes with symptoms or signs, not from a number alone.

If your level is low, a doctor usually orders a few more tests to find out why:

  • LH (luteinising hormone): shows whether the problem is in the testes or in the brain's signal to them
  • Prolactin: a high level can point to a pituitary problem
  • Free testosterone: useful when total testosterone is borderline or you are overweight
  • Blood sugar or HbA1c: to check for diabetes or prediabetes
  • Thyroid tests (TSH): to rule out a look-alike
  • Haemoglobin and vitamin D: for tiredness, and as a baseline before any treatment

Testosterone tests are widely available at labs across India, and many offer home sample collection. Prices vary by city and lab, so compare a couple of reputable labs before you book. Avoid self-testing and self-treating from the report: a borderline number is easy to misread.

If you are not sure a lab test is the right first step, the free Men's Test takes about 2 minutes and is completely private. It does not replace the blood test, but it helps you understand which cause is most likely and what to check first.

Can an Indian diet, ayurveda or testosterone boosters fix low testosterone?

A balanced Indian diet with enough protein, zinc and vitamin D supports normal testosterone, and a few herbs show small effects in short trials. But no food, herb or booster tablet is proven to fix medically low testosterone, and unregulated products carry real risks.

This question matters more in India than almost anywhere. The drivers of low testosterone here often come from the plate and the desk: rice- and roti-heavy meals with little protein, sugary chai, long sitting hours, little sun and fast-rising rates of diabetes. The same men are also the most likely to be sold a "booster" before anyone has looked at a blood report.

What an Indian diet can realistically do

Spinach, tomatoes, capsicum, nuts, pumpkin seeds, lentils, garlic, ginger and fish on a wooden table, foods that support healthy testosterone

Food will not cure a hormone problem, but a poor diet adds belly fat, and belly fat lowers testosterone. A sensible Indian plate helps in three ways:

  • Enough protein: dal, rajma, chana, eggs, fish, chicken, paneer and curd. Many Indian vegetarian diets are low in protein, so it helps to add a protein source to every meal.
  • Enough zinc: pumpkin seeds, sesame (til), cashews, chickpeas, eggs and meat. Zinc deficiency is linked with lower testosterone, and fixing a real deficiency helps.
  • Less sugar and fried food: sweets, sugary chai, packaged snacks, samosas and refined flour add belly fat and push up blood sugar. Cutting these is often the single biggest diet change.

Vitamin D deserves a special mention. A review by AIIMS doctors in the Journal of Family Medicine and Primary Care found vitamin D deficiency in most Indians, with most studies reporting 80 to 90%. Low vitamin D is linked with lower testosterone in observational studies, although it is not clear that one causes the other. A vitamin D supplement helps if you are actually deficient, so get your level checked rather than taking high doses blindly.

Ashwagandha, fenugreek and shilajit: what the research shows

Many men try ayurvedic herbs first, so here is an honest read of the evidence.

  • Ashwagandha and fenugreek (methi): a 2021 systematic review of 32 trials in Advances in Nutrition found these two had the most positive results for testosterone. But only 9 of the 32 trials showed a significant rise, only 6 had a low risk of bias, and half were done in healthy men under 40, not men with true deficiency.
  • Ashwagandha in older men: one 8-week trial in overweight men aged 40 to 70 found a 14.7% greater rise in testosterone than placebo. However, the men did not feel any more energetic or sexually well than those on placebo.
  • Shilajit: a single small trial from Kolkata, in healthy men aged 45 to 55, found purified shilajit raised testosterone over 90 days. One small study is not enough to recommend it as treatment.

So herbs may nudge testosterone a little in some men. They are not a proven treatment for low testosterone, and they will not fix a cause like diabetes, belly fat or a pituitary problem.

Why online boosters and neem-hakim clinics are risky

Quality is the bigger worry. A study in the journal JAMA bought ayurvedic medicines online and found that about 1 in 5 contained lead, mercury or arsenic, both Indian-made and US-made products. Heavy metals can harm the kidneys, liver and nerves over time.

Some "herbal" boosters and roadside clinic medicines have also been found to contain hidden steroids or undeclared drugs. These can make you feel better for a few weeks, then switch off your own testosterone. Be cautious of any neem-hakim, unregistered clinic or product that promises a "100% cure", "permanent power" or results in days. A registered doctor, a proper blood test and a clear diagnosis are safer and, in the long run, cheaper.

How is low testosterone treated safely?

Treatment depends on the cause. Losing belly fat, better sleep, regular exercise and cutting alcohol help many men, while confirmed low testosterone may need testosterone therapy prescribed and monitored by a doctor. Never self-inject testosterone or use gym steroids.

The AUA guideline asks doctors to discuss lifestyle changes, such as weight loss and exercise, with every man who has low testosterone. In practice, that means:

  • Losing weight, especially from the belly, if you are overweight
  • Strength training and regular brisk walking
  • 7 to 8 hours of sleep, and a check for sleep apnoea if you snore
  • Controlling blood sugar, and cutting down on alcohol
  • Stopping any anabolic steroids, with a doctor's help

When testosterone is confirmed low and a medical cause is found, a doctor may prescribe testosterone therapy (gels, injections or other forms). It is started only on a doctor's prescription, after checking your blood count and, in men over 40, PSA for the prostate, with regular follow-up blood tests.

One important caution: testosterone therapy switches off sperm production. The AUA guideline says it should not be prescribed to men who are trying to conceive. If you are planning a child, tell your doctor first, because there are other options that do not switch off sperm production.

For the full step-by-step lifestyle plan, read our guide on how to raise testosterone safely.

When should you see a doctor about low testosterone?

See a doctor if two or more signs last longer than a few weeks, if your sex drive or erections drop suddenly, or if you are planning a child and have any of these symptoms. Low testosterone is common and treatable, and getting checked is a normal medical step.

Book a visit sooner if you notice any of these:

  • Breast swelling or tenderness
  • Testicle pain, a lump, or a testicle that is shrinking
  • Very low energy together with weight loss you cannot explain
  • Headaches or changes in your vision along with low desire (rarely, a sign of a pituitary problem)
  • Symptoms that started during or after using gym steroids or boosters
  • Diabetes, prediabetes or a large waistline, along with low desire or weak erections

Many men put this off for years, out of embarrassment or because a family doctor or a relative might find out. It can feel awkward to bring up, but doctors discuss hormones and sex every day. You can start with a general physician, an endocrinologist (hormone specialist) or a urologist. Online consultations make it possible to talk privately from home.

The key message: most causes of low testosterone, and most of its look-alikes, can be improved once they are found. Guessing is what keeps men stuck.

The bottom line: low testosterone rarely shows up as one dramatic symptom. It is usually a slow pattern: less desire, softer erections, less energy and a bigger belly. It is common, it is checkable with a simple morning blood test, and in many men the cause, whether weight, sugar, sleep, alcohol or steroids, can be improved once it is found.

The first step is finding your root cause. Take the free, private 2-minute Men's Test to see which cause fits your symptoms. From there, a Raaz MD doctor can review your answers in a consultation and build a personalised plan, delivered discreetly. Raaz MD has carried out 50,000+ doctor consultations, and "97% users saw results". You can also see the current Raaz MD plans and prices.

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Frequently asked questions

Does low testosterone cause hair loss?

Not the usual kind. Male pattern baldness, the receding hairline and thinning crown, comes from your genes and how sensitive your scalp is to DHT, a hormone made from testosterone. Low testosterone is more likely to thin body, pubic and facial hair, so a slower-growing beard is a more typical sign. If only your scalp hair is thinning and you have no other symptoms, see a dermatologist first.

Can young men in their 20s have low testosterone?

Yes. It is less common than after 40, but it happens, usually because of obesity, poor sleep, heavy drinking, anabolic steroids used at the gym, a pituitary problem or an old testicular injury or mumps infection. The signs are the same as in older men: low desire, tiredness and weaker erections. A young man with these symptoms deserves a proper blood test, not a "you are too young" brush-off.

Can low testosterone be cured or reversed?

It depends on the cause. When extra weight, poor sleep, alcohol or steroid use is driving it, levels often recover once that cause is fixed, and weight loss is one of the most reliable levers for overweight men. If the testes or the pituitary gland are the problem, testosterone therapy manages the condition but usually needs to continue long term. A doctor can tell you which situation applies to you.

Can low testosterone cause premature ejaculation?

Usually not. Low testosterone is linked more with low desire, weaker erections and sometimes taking longer to climax. One small study found men with premature ejaculation had normal total testosterone and slightly higher free testosterone than other men. PE more often comes from anxiety, thyroid problems, prostate inflammation or habits. If you have PE and weak erections together, the erection problem may be the real driver, so get both checked.

Does frequent sex or masturbation lower testosterone?

No. This is a common myth in India, often linked to old ideas about "losing strength" through semen. There is no good evidence that regular sex or masturbation causes low testosterone or harms your health. Small, short-lived ups and downs in hormone levels are normal and do not add up to deficiency. Our guide on whether frequent sex affects testosterone covers the myths and the facts.

Do testosterone booster tablets sold online work?

Mostly not in the way the label promises. A 2021 review of 32 trials found fenugreek and ashwagandha extracts raised testosterone modestly in some studies, but most trials were small and done in healthy young men, not men with true deficiency. Quality is a bigger worry: a JAMA study found about 1 in 5 ayurvedic medicines sold online contained lead, mercury or arsenic. Get tested before you buy anything.

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