Maybe your wife sent you this article. Maybe you found it yourself at eleven at night, after another evening on the couch wondering where your drive went.
Either way, the story usually sounds similar. The energy you used to have by default now takes coffee and willpower. The gym stopped paying off the way it used to, and the belly showed up anyway. Your interest in sex has dropped, and you have mostly chalked it up to stress, work, or turning forty-five.
Men in New Port Richey tell me some version of this all the time, usually a year or two after they first noticed it. Sometimes the cause is low testosterone. Just as often, the culprit is something that lowers testosterone and can be fixed without a prescription. In this article I will walk you through the signs of low testosterone in men, how to get tested properly, and what to do next.
What Low Testosterone Actually Is
The short answer
The most common signs of low testosterone in men are a lower sex drive, weaker erections, fatigue, low motivation, irritability or low mood, and losing muscle while gaining belly fat. Because these changes build slowly, many men blame age or stress for years before anyone checks their levels.
Testosterone is made mostly in the testes, on instructions from the pituitary gland in your brain. It drives sex drive and erections, and it also shapes muscle, bone, red blood cell production, fat distribution, mood, and motivation. When it runs low, the effects show up across the whole body.
Levels drift down gradually with age, often cited at around 1 percent a year starting in middle age. That slow decline alone keeps many men comfortably within a healthy range. A faster or bigger drop usually has another cause stacked on top of age, and that cause is often the most useful thing to find.
The total testosterone level, in ng/dL, that the American Urological Association uses as the cutoff supporting a diagnosis of low testosterone. It has to be confirmed on two separate early-morning tests, and it only counts as testosterone deficiency when symptoms are present too.
The Signs Most Men Blame On Getting Older
None of these signs proves low testosterone by itself. Several of them together, building over months or years, are a good reason to get tested.
Your sex drive fades
Low desire is one of the more specific signs. Many men notice they rarely think about sex anymore, well before anything changes in performance.
Erections get less reliable
Weaker erections and fewer morning erections are common. Erectile problems also have vascular causes, so they deserve a proper look either way.
Tired without a good reason
A steady, low-grade fatigue that sleep does not fix, along with less endurance and a harder time getting through the afternoon.
Motivation and patience drop
Irritability, a flat or low mood, and a loss of drive at work or at home. Some men describe it as losing their edge.
Muscle shrinks, belly grows
Losing strength and muscle despite training, while fat collects around the middle. Some men also notice tender or enlarged breast tissue.
Concentration slips
Poorer concentration and memory complaints show up on the American Urological Association’s list of symptoms linked to low testosterone.
There are quieter signs too. Unexplained anemia, bone density loss, and type 2 diabetes are all linked with low testosterone, and the American Urological Association recommends checking levels in men with any of them, even without other symptoms.
Why The Test Itself Can Mislead
A single testosterone result can mislead you either way. Testosterone is highest in the morning and falls through the day, so an afternoon draw can look low in a man whose levels are fine.
Results also bounce between tests. The American Urological Association notes that repeat measurements can vary widely depending on the lab method, which is why the guideline calls for two early-morning tests on separate days, ideally at the same lab. A recent cold or flu can drop levels temporarily too, so testing while you are sick is a poor idea.
Total testosterone is the starting point. Depending on the situation, I also look at free testosterone and SHBG, the protein that binds testosterone in your blood, along with LH and FSH, the pituitary signals that show if the problem starts in the testes or in the brain. I wrote more about why a single normal-looking lab result rarely tells the whole story in my article on feeling tired with normal labs.
Common Causes You Can Actually Change
This is the part I most want men to hear. A meaningful share of low testosterone is driven by things that can improve.
Extra weight around the middle. Fat tissue converts testosterone into estrogen, and insulin resistance suppresses the signals that tell your testes to produce it. Losing waist fat often raises testosterone on its own.
Poor sleep and sleep apnea. Most testosterone is released during sleep. In one well-known study, young men restricted to five hours of sleep a night for a week saw their testosterone drop by roughly 10 to 15 percent. Loud snoring, gasping at night, and waking unrefreshed are reasons to ask about a sleep study.
Medications and alcohol. Opioid pain medications and long-term steroid use can lower testosterone significantly. Heavy drinking does too.
Chronic stress and overtraining. Long stretches of high stress, under-eating, or hard training without recovery can all push levels down.
Two things to know before any treatment
- Planning to have children? Testosterone therapy suppresses sperm production and can cause infertility. Tell your provider first, because other options exist.
- Headaches with vision changes alongside low testosterone need prompt evaluation, since they can point to a pituitary problem.
How I Evaluate Men In My Practice
When a man comes to see me, we start with his story: when the changes began, how he sleeps, what he eats and drinks, what medications he takes, how stress and training look, and what his partner has noticed. That history often points straight at the cause.
From there we test properly, with early-morning labs and the markers that show how the whole system is working. I also check red blood cell levels, blood sugar and insulin, thyroid function, and, where appropriate, PSA, since these shape both the diagnosis and what treatment is safe.
If a reversible cause is driving the problem, we work on that first. If testosterone is truly low and symptoms fit, testosterone therapy can be a good option, with regular labs to monitor red blood cell counts, PSA, and how you feel. I walk through what the first 90 days on testosterone look like in a separate article. You can read more about how we care for men on our men’s health page, and about hormone testing on our hormone balance page.
What You Can Do Starting Now
You can start moving the needle this week, and every one of these steps also makes your lab results more meaningful.
- Book a morning blood draw
Schedule testosterone testing before 10 AM, when you are healthy and rested. Plan on a second morning test to confirm any low result.
- Protect seven to nine hours of sleep
Keep a consistent bedtime and a dark, cool room. If you snore loudly or wake gasping, ask about a sleep study.
- Lift and walk
Strength training two or three times a week plus daily walking helps build muscle, improves insulin sensitivity, and supports healthy testosterone.
- Trim the waistline
Even a modest drop in belly fat can raise testosterone. Build meals around protein and vegetables, and cut back on sugar and refined carbs.
- Take an honest look at alcohol and medications
Notice how much you drink in a typical week, and make a list of every prescription and supplement to review with your provider.
- Ask your partner what they have noticed
Changes in mood, patience, and energy are often clearer from the outside. Bring their observations to your appointment.
Frequently Asked Questions
What is a normal testosterone level for a man?
Reference ranges vary by lab. The American Urological Association uses a total testosterone below 300 ng/dL, confirmed on two early-morning tests, as the cutoff supporting a low testosterone diagnosis. A number alone is not enough, though. The diagnosis also requires symptoms, and free testosterone can add useful detail.
At what age does testosterone start to drop?
Testosterone usually starts a slow decline in middle age, often estimated at about 1 percent a year. Many men stay within a healthy range for decades. A sharper drop, or symptoms in your 30s or early 40s, usually points to another cause to look into, such as weight gain, poor sleep, or medications.
Can I raise my testosterone naturally?
Often, yes, when a reversible cause is involved. Losing belly fat, treating sleep apnea, sleeping seven to nine hours, strength training, and cutting back on alcohol can all raise testosterone. Most over-the-counter testosterone boosters have little good evidence behind them, so talk with a provider before spending money on them.
Does testosterone therapy affect fertility?
Yes. Testosterone therapy signals your body to stop making its own testosterone and sperm, and it can cause infertility while you are on it. Men who want children now or in the future should discuss alternatives with their provider before starting any form of testosterone.
Is testosterone therapy safe for your heart?
A large 2023 trial called TRAVERSE found that testosterone therapy did not increase heart attacks or strokes compared with placebo in men with low testosterone and higher heart risk. It did see more atrial fibrillation and blood clots in the lungs, which is one reason ongoing monitoring with your provider is important.
Feeling Like Yourself Again
Low energy, low drive, and a changing body are common after 40, and they are not something you simply have to accept. The right testing sorts out what is going on, and the answer is often more fixable than men expect.
Get real answers about your testosterone
Book a free 15-minute discovery call to talk through your symptoms and next steps. We see men in our New Port Richey office and by telemedicine throughout Florida, Nevada, and Arizona.
Book Your Free ConsultPrefer to talk today? Call (727) 312-4042