Night sweats usually improve once you identify the trigger and make targeted changes. For many people, the fix is as simple as adjusting the sleep environment or cutting out a dietary habit. For others, the cause is hormonal, medication-related, or medical, and stopping the sweats means addressing that underlying issue. Here’s how to work through the most common causes and what actually helps.
Start With Your Sleep Environment
The easiest wins come from your bedroom setup. Your body naturally drops its core temperature during sleep, and anything that interferes with that cooling process can trigger sweating. Keep your bedroom between 60 and 67°F (15 to 19°C). That range feels cool when you’re awake, but it aligns with what your body needs once you fall asleep.
Beyond the thermostat, your bedding matters more than most people realize. Synthetic sheets and memory foam mattresses trap heat against your skin. Switching to cotton or linen sheets, using a lighter blanket, or sleeping on a mattress with better airflow can reduce sweating noticeably. Wearing lightweight, moisture-wicking sleepwear (or nothing at all) helps your skin release heat instead of trapping it. A fan pointed toward the bed adds airflow even when the room temperature is already in the right range.
Check What You’re Eating and Drinking
Alcohol is one of the most common and underrecognized triggers for night sweats. It increases your heart rate and widens blood vessels in your skin, which pushes warmth to the surface and triggers perspiration. Even moderate drinking in the evening can cause sweating hours later as your body metabolizes the alcohol during sleep. If you’re waking up damp after nights you drink but not other nights, that’s a strong signal.
Spicy foods, caffeine, and large meals close to bedtime can have a similar effect. Capsaicin (the compound that makes peppers hot) directly activates the same heat receptors in your body that respond to actual temperature increases. Caffeine stimulates your nervous system and can raise your core body temperature slightly. Try eliminating these triggers for two weeks and see if the pattern changes. Most people notice a difference within the first few nights.
Medications That Cause Night Sweats
Antidepressants are among the most common medication-related causes. Between 7% and 19% of people taking SSRIs experience excessive sweating, depending on the specific drug. The mechanism involves acetylcholine, the chemical messenger that activates sweat glands. These medications can increase its activity, essentially turning up your body’s sweat response.
Other medications that frequently cause night sweats include hormone therapies, blood pressure medications, diabetes drugs that can lower blood sugar overnight, and over-the-counter fever reducers like aspirin or acetaminophen. Steroids, both prescription and supplemental, are another common culprit. If your night sweats started within a few weeks of beginning a new medication, that timing is worth noting. Your prescriber may be able to adjust the dose, switch to an alternative, or add a medication that blocks the sweating response.
Hormonal Causes and What Helps
Menopause is the most well-known hormonal trigger. Roughly 75% to 80% of women going through perimenopause or menopause experience hot flashes or night sweats, and for some, they persist for years. The drop in estrogen disrupts the brain’s temperature regulation, narrowing the range of body temperature your brain considers “normal.” Small fluctuations that would normally go unnoticed instead trigger a full cooling response: blood vessels dilate, your heart rate increases, and you sweat.
Hormone replacement therapy is the most effective medical treatment for menopausal night sweats, but it’s not the only option. A form of cognitive behavioral therapy developed specifically for menopausal symptoms has shown real results. It combines sleep education, structured sleep scheduling, and techniques for reframing how your brain reacts to hot flashes. The approach helps reduce both the frequency and the distress of nighttime sweating episodes by addressing the cycle of anxiety and sleep disruption that often makes things worse.
Low testosterone in men can also cause night sweats, as can thyroid disorders in anyone. If you suspect a hormonal issue, blood work can usually confirm or rule it out quickly.
When Night Sweats Signal Something Serious
Most night sweats are not dangerous. But certain patterns warrant medical attention. Drenching night sweats, the kind that soak through your sheets and wake you up, are clinically distinct from mild dampness. When these occur alongside unexplained weight loss, persistent fevers, or swollen lymph nodes, they’re classified as “B symptoms” in cancer staging. This combination can indicate lymphoma or other blood cancers.
Infections are another serious cause. Tuberculosis is the classic example, but bacterial infections of the heart valves, bone infections, and abscesses can all produce night sweats. HIV can cause them as well, particularly in the early weeks after infection. Night sweats that come on suddenly, happen every night regardless of your environment, or are accompanied by other unexplained symptoms deserve a medical evaluation rather than lifestyle adjustments alone.
Practical Steps That Work Tonight
If you’re looking for immediate relief while you sort out the underlying cause, a few strategies can help right away. Keep a glass of ice water on your nightstand. Use a damp washcloth on your forehead or the back of your neck when you wake up sweating. Place a towel over your pillow so you can flip or replace it without fully waking up. Some people find that cooling pillows with gel inserts make a noticeable difference.
A bedroom fan serves double duty: it moves air across your skin to speed evaporation, and the white noise can help you fall back asleep faster after a sweating episode wakes you. If your partner prefers a warmer room, separate blankets give you independent temperature control without negotiating thermostat settings.
Tracking Your Triggers
Night sweats often have more than one contributing factor, which makes them frustrating to pin down. Keeping a brief log for one to two weeks can reveal patterns you’d otherwise miss. Note what you ate and drank that evening, what time you went to bed, what you wore, your room temperature, and how severe the sweating was. Also track your menstrual cycle if applicable, any medications you took, and your stress level that day.
Most people find that their sweats cluster around specific triggers once they actually look at the data. Maybe it’s every night you have wine with dinner, or only during the week when work stress peaks, or consistently worse after exercising late in the evening. That pattern is the information you need to make changes that stick. If the log shows no pattern and the sweats are persistent and severe, that’s useful information too, because it points toward a medical cause worth investigating with your doctor.