Insomnia in men is usually caused by a mix of stress or mental health problems, poor sleep habits, alcohol or caffeine, medicines, medical conditions, and other sleep disorders. Two causes deserve special attention: obstructive sleep apnea and nighttime urination linked to prostate or urinary symptoms.
Insomnia means having trouble falling asleep, staying asleep, or waking too early despite having enough time and suitable conditions for sleep. It is considered chronic when it happens at least 3 nights a week for 3 months or longer. A 2023 American Urological Association guideline notes that nighttime urination, or nocturia, often has more than one cause.
Common Causes of Insomnia in Men
| Possible cause | Clues that may point to it |
|---|---|
| Stress, anxiety or depression | Racing thoughts, low mood, irritability or persistent worry |
| Obstructive sleep apnea | Loud snoring, gasping, breathing pauses, morning headaches or daytime sleepiness |
| Prostate or urinary problems | Weak urine stream, urgency or waking repeatedly to urinate |
| Alcohol, caffeine or nicotine | Trouble sleeping after evening use or waking during the night |
| Shift work or irregular schedules | Sleep problems that change between workdays and days off |
| Pain or medical conditions | Arthritis, reflux, thyroid problems or chronic discomfort |
| Medicines and supplements | Symptoms that began after starting a prescription or over-the-counter product |
| Restless legs syndrome | An uncomfortable urge to move the legs that gets worse at night |
| Persistent worry about sleep | Clock-watching, frustration and long periods awake in bed |
1. Stress, Anxiety and Depression
Stress from work, finances, relationships, health concerns or major life changes can keep the brain alert at bedtime. Anxiety can create a cycle in which worrying about sleep makes sleep harder.
Depression may cause insomnia, early-morning waking or excessive sleep. For some people, insomnia appears before they recognise that they are depressed. Long-term insomnia can also contribute to anxiety, irritability and low mood.
A related problem is conditioned insomnia. After several poor nights, you may begin to associate the bedroom with frustration and wakefulness instead of sleep. Clock-watching and trying to force yourself to sleep can strengthen that association.
2. Obstructive Sleep Apnea
Obstructive sleep apnea occurs when the upper airway repeatedly narrows or closes during sleep. Each interruption can briefly wake the brain, leading to broken, unrefreshing sleep. Sleep apnea can look like insomnia when the main complaint is repeated waking or difficulty getting back to sleep.
Signs that insomnia may involve sleep apnea include:
- Loud, frequent snoring
- Gasping, choking or witnessed breathing pauses
- Excessive daytime sleepiness
- Morning headaches or dry mouth
- Waking several times to urinate
- Reduced libido or sexual dysfunction
Loud snoring is more common in men. Sleep apnea can cause poor-quality sleep and nighttime urination. A healthcare professional may recommend a sleep study when these symptoms are present.
Alcohol can worsen sleep-disordered breathing. Drinking in the evening may make snoring and disrupted sleep worse.
3. Enlarged Prostate and Nighttime Urination
Benign prostatic hyperplasia, usually called BPH or an enlarged prostate, can cause urinary frequency, urgency and nocturia. Nocturia means waking during the night to urinate.
Repeated trips to the bathroom can lead to insomnia in two ways:
- The need to urinate wakes you.
- Once awake, you may have trouble falling asleep again.
Nighttime urination is not always caused by the prostate. Sleep apnea, excess evening fluids, diabetes, certain medicines, bladder problems and changes in sleep quality can also contribute. The American Urological Association describes nocturia as commonly having several causes.
Speak with a healthcare professional if nighttime urination is persistent, bothersome or painful, or if it comes with burning or blood in the urine.
4. Alcohol, Caffeine, Nicotine and Recreational Drugs
Substances can interfere with sleep even when they initially make you feel relaxed or tired.
- Alcohol may help you fall asleep faster, but it commonly causes broken sleep and earlier waking.
- Caffeine can delay sleep, especially when consumed later in the day.
- Nicotine is stimulating and may cause withdrawal-related waking overnight.
- Recreational drugs, including stimulants, can disrupt the sleep-wake cycle.
- Alcohol withdrawal can cause insomnia in people who drink heavily and regularly.
Alcohol may also worsen sleep apnea and periodic limb movements during sleep.
5. Irregular Schedules, Shift Work and Technology
Night shifts, rotating schedules, jet lag and changing bedtimes can move sleep out of sync with the body's circadian rhythm.
Other habits that may worsen insomnia include:
- Long or late daytime naps
- Too little daytime physical activity
- Using a phone, computer or television in bed
- Spending long periods awake in bed
- Sleeping much later on days off
- Working or exercising intensely close to bedtime
Shift work and frequent schedule changes are especially likely to cause trouble sleeping at the desired time.
6. Medications and Supplements
Some medicines can make it harder to fall asleep or stay asleep. Examples include certain:
- Decongestants and cold medicines
- Diet pills and stimulants
- Steroids
- Antidepressants
- Beta blockers
- Recreational or performance-enhancing substances
The effect depends on the medicine, dose, timing and individual response. Do not stop a prescribed medicine without medical advice. A pharmacist or prescriber can assess whether a dose change or earlier timing may help.
7. Pain and Other Medical Conditions
Pain can delay sleep and cause repeated waking. Common contributors include back pain, arthritis, nerve pain, injuries and chronic pelvic discomfort.
Other conditions linked with insomnia include:
- Acid reflux
- Asthma or other breathing problems
- Thyroid disorders
- Diabetes
- Heart disease
- Parkinson's disease
- Depression and bipolar disorder
- Restless legs syndrome
- Other chronic illnesses
Restless legs syndrome causes unpleasant sensations and an urge to move the legs. Symptoms usually become worse when you lie still in the evening, which can make falling asleep difficult.
8. Age-Related Changes
Insomnia becomes more common with age. Older men may sleep more lightly, wake more often, develop urinary symptoms, take medicines that affect sleep, or develop sleep apnea and other medical conditions.
Age does not explain every sleep problem. New or worsening insomnia still deserves assessment, especially when it occurs with loud snoring, daytime sleepiness, pain, urinary changes or mood symptoms.
Is Low Testosterone a Common Cause of Insomnia?
Low testosterone is not usually a complete explanation for insomnia by itself. The relationship between testosterone and sleep works in both directions.
Poor sleep, obesity and sleep apnea can be linked with lower testosterone. High-dose testosterone or anabolic steroid use may reduce sleep duration or worsen sleep apnea in some men. Treating suspected low testosterone without checking for sleep apnea, obesity, depression and other causes may leave the main problem untreated.
Low libido, erectile dysfunction, fatigue and insomnia together are reasons to discuss the full picture with a healthcare professional instead of assuming testosterone is the only cause.
When Should a Man Seek Medical Help for Insomnia?
Arrange a medical evaluation when insomnia:
- Happens at least 3 nights a week
- Continues for 3 months or longer
- Affects work, mood, memory or concentration
- Occurs with loud snoring, gasping or breathing pauses
- Requires repeated nighttime urination
- Begins after starting a medicine or supplement
- Occurs with depression, severe anxiety or symptoms of bipolar disorder
A clinician may review your sleep schedule, medicines, alcohol and caffeine use, mental health, urinary symptoms and medical history. A sleep study may be appropriate when sleep apnea, a circadian rhythm disorder or another sleep disorder is suspected.
If you feel sleepy while driving, do not drive. Insomnia and untreated sleep disorders can affect attention, reaction time and decision-making.
Bottom Line
Persistent insomnia is a reason to look for a cause rather than assume that sleeping pills are the only answer. In men, that assessment should include sleep apnea, nighttime urination, alcohol and caffeine use, medicines, mood, pain and schedule changes.