“I haven't woken up with an erection for months. Is something wrong?” Many men want to ask this but feel too embarrassed. Morning erections are a small signal that can say more about your health than you might expect, but losing them does not always mean something is wrong.
Why do morning erections happen?
During sleep you pass through several cycles of REM (dreaming) sleep. In healthy men, REM sleep triggers automatic erections called nocturnal penile tumescence, about 3–5 times a night. They do not need sexual dreams and are not caused by a full bladder. A morning erection simply means you woke at the end of your last REM cycle.
Sleep erections are thought to refresh blood and oxygen supply to penile tissue. Good night-time erections suggest the blood vessels and nerves are working.
Is it normal not to have them?
Not waking with an erection every day is normal; it depends on which stage of sleep you wake from, and many men have night erections without noticing. Frequency also falls with age, short sleep, stress and alcohol the night before.
What matters is a persistent change in pattern: morning erections that used to be common and have almost disappeared for weeks or months, or that vanish together with other symptoms.
What reduces morning erections?
- Low testosterone. Sleep erections depend on testosterone, and the Endocrine Society lists reduced spontaneous erections as a symptom suggestive of hypogonadism, often with low desire, tiredness and loss of muscle. See symptoms of low testosterone
- Blood vessels and chronic disease such as diabetes, high blood pressure, high cholesterol and smoking
- Sleep: short or broken sleep and obstructive sleep apnoea reduce REM sleep
- Medicines and substances such as some antidepressants and antipsychotics, alcohol and recreational drugs
- Age: a gradual decline is expected, a sudden loss is not
Morning erections and erectile dysfunction
If you still get good morning erections or erections during masturbation but struggle only with a partner, psychological factors such as performance anxiety usually play a large part. If erections are weaker in every situation, including mornings, physical causes are more likely, and ED can be an early warning of heart disease. See Erectile dysfunction.
What your doctor checks
- History: morning erections, desire, sleep, medicines, stress and relationship
- Questionnaires such as IIEF-5 and ADAM
- Examination: blood pressure, weight, waist, penis and testicles
- Blood tests: glucose (FBS or HbA1c), cholesterol and a morning total testosterone, repeated to confirm if low. See blood tests before TRT
- Sleep assessment if you snore loudly, wake gasping or are very sleepy in the day
Formal night-time erection testing (RigiScan) is only needed in selected cases. The “postage stamp test” shared online is not reliable.
What you can do
- Sleep 7–9 hours on a regular schedule
- Do regular aerobic and strength exercise and reduce waist size
- Cut down on alcohol and stop smoking
- Do not stop prescribed medicines yourself; ask your doctor about alternatives
- Read supporting testosterone with sleep, food and exercise
When to see a doctor
- Morning erections gone for several weeks, with lower desire, tiredness or mood change
- Erection problems for more than 3 months
- Diabetes, high blood pressure, high cholesterol or smoking
- A new bend, lump or pain in the penis
- Go to hospital immediately for an erection lasting over 4 hours, or chest pain during or after sex (in Thailand call 1669)
At Dr. Kris Clinic in Surat Thani we assess hormones, blood vessels, sleep and relationship together, privately and confidentially. We also see men from Koh Samui and Koh Phangan, and online across Thailand. English spoken.
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