Testosterone in midlife: what to know before you treat it

Three different questions people bring

Men usually come to this topic with one of three questions. Is my level actually low? Are my symptoms caused by testosterone or by something else? And if it is low, what are my treatment options and trade-offs?

Those are separate questions with separate answers. A man can have a low number with few symptoms, or classic symptoms with a perfectly normal level. Treating the number without the rest of the picture is how people end up on therapy that does not help them.

What testosterone does in the body

Testosterone is made mainly in the testes in response to luteinizing hormone (LH) from the pituitary. It supports sex drive, muscle and bone, red blood cell production and fat distribution, and it plays a role in erections and mood.

It is not a general vitality tonic. In men with genuinely low levels, treatment most consistently improves libido and body composition. Effects on energy, mood and thinking are smaller and less consistent, and testosterone on its own is not a dependable treatment for erectile dysfunction.

Why low T is harder to diagnose than it looks

Tiredness, low motivation, poor sleep, weight gain and reduced libido are common in midlife and have many causes. Testosterone does drift down with age, but modestly, and symptoms often track only loosely with measured levels.

The American Urological Association therefore defines testosterone deficiency as low total testosterone together with symptoms or signs. It suggests 300 ng/dL as a reasonable cutoff and asks that the diagnosis be made only after two separate low readings.

Getting the measurement right

Testosterone is highest in the morning and can be temporarily lowered by acute illness, poor sleep, heavy training or a large meal. That is why guidelines call for early-morning blood draws on two different days.

Total testosterone is usually read alongside sex hormone-binding globulin (SHBG), because SHBG changes how much testosterone is available to tissues. If the result is low, LH is measured to locate the problem, and prolactin is checked when LH is low or low-normal. A complete blood count and, for men over 40, PSA are taken before any treatment starts.

• Two early-morning total testosterone results
• SHBG, with calculated free testosterone when useful
• LH and FSH to separate primary from secondary causes
• Prolactin when LH is low or inappropriately normal
• Hemoglobin and hematocrit, plus PSA after age 40

Primary versus secondary, and why it matters

In primary hypogonadism, the testes themselves are not responding, and LH and FSH are high because the brain is pushing harder. In secondary hypogonadism, the signal from the brain is weak, so LH and FSH are low or inappropriately normal.

Secondary causes are often reversible. Obesity, sleep apnea, heavy alcohol use, opioids, glucocorticoids, a raised prolactin and, rarely, pituitary disease can all suppress the signal. Fixing the cause can sometimes restore testosterone without any hormone treatment.

Replacing testosterone or stimulating your own

Testosterone replacement, by injection, gel or other forms, raises levels reliably. The trade-off is that outside testosterone tells the brain to stop sending LH and FSH, which reduces sperm production and can shrink the testes. Fertility often recovers after stopping, but recovery can be slow and is not guaranteed.

For men with secondary hypogonadism who want to protect fertility, medicines such as clomiphene or enclomiphene can raise the body's own LH and testosterone. These do not work in primary hypogonadism. Enclomiphene is available in the U.S. only as a compounded product, which means it is not FDA-approved and has not had FDA review for safety, effectiveness or quality.

Fertility comes first if you might want children

The AUA advises against prescribing testosterone to men who are actively trying to conceive and recommends a reproductive evaluation before treatment for men interested in future fertility. A semen analysis before starting is a sensible step if children are still a possibility.

What the heart evidence shows

The TRAVERSE trial followed more than 5,000 men aged 45 to 80 with low testosterone and existing or high cardiovascular risk. Testosterone gel did not increase major cardiac events such as heart attack or stroke compared with placebo.

The trial did find higher rates of atrial fibrillation, clot-related problems and acute kidney injury in the testosterone group. That is why therapy is used cautiously in men with a history of blood clots and is not a reason for widespread prescribing.

What gets monitored on treatment

Testosterone stimulates red blood cell production, so hematocrit is checked before and during therapy, and a rising value may mean a dose change or a pause. Testosterone levels are rechecked after starting and then every 6 to 12 months, and PSA is followed in men over 40.

The AUA also suggests stopping and reassessing after three to six months if levels have normalized but symptoms have not improved. Blood pressure, sleep apnea symptoms and lipids deserve attention as well.

Conditions that mimic low testosterone

Before attributing symptoms to testosterone, it is worth ruling out common lookalikes: obstructive sleep apnea, depression, hypothyroidism, iron deficiency or anemia, poorly controlled blood sugar, heavy drinking and medication side effects. Several of these also lower testosterone, so treating them can improve both.

If you are trying to decide

Start by writing down what you most want to change: sex drive, energy, body composition, mood or something else. That gives you and your clinician a concrete way to judge later whether treatment is helping, instead of relying on a general sense of feeling better or worse.

Next, make sure the basics are covered. Two properly timed results, LH and prolactin where needed, a blood count and PSA if you are over 40 form the minimum. If sleep is poor, snoring is loud or your partner has noticed pauses in your breathing, a sleep apnea evaluation may be more useful than any hormone.

Finally, agree on a checkpoint. A trial of three to six months with clear goals and planned labs lets you stop if the benefit is not there. Testosterone is not something you need to commit to for life on day one, though stopping should be planned with your clinician rather than done abruptly on your own.

How HealifyMD approaches it

At HealifyMD, a licensed clinician reviews your history and properly timed labs before discussing treatment. Options may include testosterone replacement or, where appropriate, a compounded enclomiphene-based product. Testosterone therapy is listed at $249 for the first month, then $149 per month, and the first month includes the lab panel. Follow-up labs are priced separately, and prices are confirmed during your eligibility review.