Can Low Testosterone Cause Night Sweats? What to Know

By Noophoric Editorial Team Updated August 31, 2026

Short answer: Low sex-hormone levels can contribute to hot flashes and night sweats in some men, especially during androgen-deprivation treatment or severe hypogonadism. But night sweats are nonspecific and should not automatically be blamed on low testosterone. Research suggests that low estradiol—much of which men produce from testosterone—is an important mediator of vasomotor symptoms.

Key takeaways

True night sweats soak sleepwear or bedding despite a cool sleeping environment.
Hormone deficiency can cause vasomotor symptoms in men, but low testosterone is not the only pathway.
In a controlled study, estradiol deficiency was the key mediator of hot flashes in hypogonadal men.
Medications, sleep disorders, thyroid disease, mood disorders, infection and other conditions can also cause night sweats.
Regular drenching sweats, particularly with fever, unexplained weight loss or other symptoms, deserve medical evaluation.

What counts as night sweats?

Feeling warm under heavy bedding is not necessarily a medical night sweat. The term usually describes repeated sweating that soaks clothing or sheets even though the room is comfortably cool.

Night sweats are common and often do not indicate a dangerous condition. They are still worth discussing when they recur, interrupt sleep or appear with other symptoms.

How male hormones can affect temperature control

The hypothalamus helps regulate body temperature. Changes in sex hormones can narrow the range of temperature the body considers comfortable, leading to sudden warmth, flushing and sweating.

Men produce estradiol by converting some testosterone through the aromatase enzyme. In a controlled study, researchers suppressed gonadal hormones in healthy men and varied testosterone and estradiol exposure. Vasomotor symptoms occurred more often when estradiol was very low, leading the authors to identify estradiol deficiency as the key mediator. High testosterone may have had an additional suppressive effect.^[1]

That finding corrects an oversimplification: the symptom cannot be explained only as “low testosterone causes sweating.” The balance and conversion of multiple hormones matter.

When are hormone-related night sweats more likely?

Vasomotor symptoms are well recognized in men receiving androgen-deprivation therapy for prostate cancer. They may also occur in severe hypogonadism, particularly when testosterone and estradiol are both low.

Hormonal symptoms are more plausible when sweating occurs with other features such as reduced libido, fewer spontaneous erections, infertility, loss of body hair or decreased muscle mass. Even then, laboratory confirmation is required.

Other common causes

A systematic review concluded that night sweats are nonspecific and that many proposed causes are not supported by strong evidence.^[2] A medical history and symptom pattern guide the evaluation.

Medications

Antidepressants, steroids, some pain medicines, hormone treatments and medicines that lower blood sugar can contribute to sweating. Antidepressants can also affect sexual function without necessarily lowering testosterone; see our review of antidepressants and testosterone.

Sleep and environmental factors

A warm room, heavy bedding, alcohol near bedtime, fever and obstructive sleep apnea can all be relevant. Snoring, witnessed breathing pauses and severe daytime sleepiness should be mentioned to a clinician.

Endocrine and metabolic conditions

Hyperthyroidism and low blood sugar are among the possible causes. Diabetes treatment, tremor, palpitations, weight change and heat intolerance can help guide testing.

Infection, inflammation and cancer

These are less common explanations in primary care but become more important when drenching sweats occur with fever, persistent cough, swollen lymph nodes, unexplained weight loss or other systemic symptoms.

How is low testosterone diagnosed?

The Endocrine Society recommends a diagnosis only when a man has compatible symptoms or signs and unequivocally and consistently low testosterone. An initial low morning fasting result should be confirmed with a repeat measurement.^[3]

A clinician may also measure LH, FSH or other hormones to determine why testosterone is low. Because estradiol contributes to male vasomotor symptoms, the clinical context can matter more than a testosterone number viewed alone.

Does TRT stop night sweats?

If drenching sweats are truly caused by confirmed hypogonadism, appropriate treatment of the hormone deficiency may help. That does not mean testosterone should be started as a diagnostic experiment.

Testosterone therapy has risks, can suppress fertility and requires monitoring. It will not treat night sweats caused by infection, thyroid disease, medication effects or another condition. A response to treatment also does not prove that every earlier episode had the same cause.

What to track before an appointment

How often the sweats occur and whether bedding must be changed
Room temperature and bedding
Fever, cough, diarrhea, pain or unexplained weight change
Snoring and sleep quality
New medicines, supplements or dose changes
Alcohol and substance use
Other symptoms of possible hormone deficiency

When to seek medical attention

Schedule an evaluation when night sweats happen regularly, wake you, soak bedding or worry you. Seek prompt care when they occur with fever, unexplained weight loss, persistent cough, swollen lymph nodes, chest symptoms or another significant change. Mayo Clinic and NHS guidance both recommend evaluation for regular drenching sweats or accompanying concerning symptoms.^[4]^[5]

Frequently asked questions

Can low testosterone make a man sweat at night?

It can contribute to vasomotor symptoms in some men, particularly with severe hormone suppression, but other causes are common and estradiol deficiency appears to play an important role.

Are hot flashes in men always caused by low testosterone?

No. Medicines, thyroid disease, infection, sleep disorders and other conditions can cause sweating or flushing.

Should I take a testosterone booster for night sweats?

No. A supplement cannot diagnose the cause, and it may delay evaluation of a medication effect or medical condition.

Can antidepressants cause night sweats?

Yes, sweating is a recognized side effect of some antidepressants. Do not stop them abruptly; discuss the symptom with the prescriber.

The bottom line

Hormone deficiency can cause hot flashes and night sweats in men, but the biology involves estradiol as well as testosterone. Because night sweats have a broad differential diagnosis, repeated drenching episodes should be evaluated rather than treated as proof of low testosterone.

Sources

Evidence reviewed August 2026. This article is educational and is not a substitute for individualized medical diagnosis or treatment.