Cant Sleep You May Be At Risk For Atrial Fibrillation
Informed by recognized medical guidance
Overview
Atrial fibrillation (often called AFib) is a heart condition that causes an irregular and sometimes very fast heartbeat. It happens when the upper chambers of the heart beat out of sync with the lower chambers. Recent research suggests that not sleeping well, such as having insomnia or getting too little sleep, may raise your chances of developing AFib.
Key facts
- People who regularly sleep less than 6 hours a night may have a higher risk of AFib.
- Sleep problems like sleep apnea and insomnia can strain your heart over time.
- Improving your sleep habits may help lower your risk of heart rhythm problems.
Yes. Atrial fibrillation is one of the most common heart rhythm disorders, affecting millions of people worldwide. Sleep problems are also very common, and many people don't realise the two can be linked.
AFib can affect people of any age, but it becomes more common as you get older. You may be more likely to develop it if you have high blood pressure, heart disease, obesity, diabetes, or sleep apnea. Sleep deprivation can increase your risk even if you are otherwise healthy.
Symptoms
- Chest pain that lasts more than a few minutes or goes away and comes back
- Trouble breathing or severe shortness of breath
- Fainting or passing out
- Weakness or numbness on one side of your face, arm, or leg
- Difficulty speaking or understanding speech
- ⚠Your heart is racing, skipping, or fluttering and you feel dizzy or light-headed
- ⚠You have an irregular pulse and feel very tired or short of breath
- ⚠You have AFib symptoms along with a fever or illness
- ⚠You have been diagnosed with AFib and your symptoms are getting worse
Common symptoms
- A fluttering or racing feeling in your chest
- Feeling unusually tired or weak
- Shortness of breath, especially during activity
- Dizziness or light-headedness
- Chest discomfort or pressure
Causes
Main causes
- Sleep problems such as insomnia, sleep apnea, or routinely getting less than 6 hours of sleep
- High blood pressure and other heart conditions
- Heavy alcohol use, especially binge drinking
- Stress and anxiety
- An overactive thyroid gland
- Lung disease or a serious infection
Risk factors
- Being older than 65
- Having a family history of AFib
- Obesity or being overweight
- High blood pressure, diabetes, or heart failure
- Sleep apnea or chronic insomnia
- Smoking or using stimulants
- Drinking alcohol in excess
When to see a doctor
See a doctor urgently if:
- If you have chest pain, fainting, or signs of a stroke, call your local emergency number immediately.
- If your heart is racing and you feel dizzy, short of breath, or very weak, get urgent medical care the same day.
Book a routine appointment if:
- Make a doctor's appointment if you regularly can't sleep and have any risk factors for AFib, such as high blood pressure or heart disease.
- See your doctor if you notice your heart fluttering, racing, or skipping beats, even if it only happens once in a while.
- Talk to your doctor about a sleep assessment if you snore heavily, wake up gasping, or always feel tired despite sleeping.
Diagnosis
Your doctor will start by asking about your symptoms, sleep habits, and medical history. They will check your pulse and listen to your heart. To confirm AFib, they may order an electrocardiogram (ECG), which is a simple, painless test that records your heart's electrical activity.
Tests that may be done
- Electrocardiogram (ECG) — a quick test done in the clinic
- Holter monitor — a small portable ECG device you wear for 24 hours or longer
- Event monitor — a device you press when you feel symptoms
- Blood tests — to check for thyroid problems or other causes
- Sleep study — if your doctor suspects sleep apnea
What to expect at your appointment
The heart tests are simple and usually painless. You'll likely sit quietly while the ECG records for a few minutes. If the doctor sends you home with a monitor, you'll wear it as you do your normal activities. Afterward, the doctor will explain the results and go over next steps with you.
Treatment
Treatment for AFib focuses on controlling your heart rate, restoring a normal rhythm, and preventing blood clots that can cause stroke. A healthier sleep routine and other lifestyle changes are part of the plan. The right treatment depends on your specific situation and overall health.
Self-care at home
- Aim for 7 to 9 hours of sleep each night and keep a regular sleep schedule
- Practice good sleep hygiene, like keeping your bedroom cool, dark, and quiet
- Limit alcohol and avoid heavy drinking
- Cut back on caffeine, especially in the afternoon and evening
- Learn stress-reduction techniques like deep breathing or meditation
- Quit smoking if you smoke
Medical treatments
Doctors may prescribe medicines to slow a fast heartbeat or help keep your heart in a normal rhythm. They may also use blood-thinning medication to reduce stroke risk. Some people benefit from a procedure called cardioversion, where a quick electrical shock resets the heart rhythm, or a catheter ablation, which targets the tiny areas of the heart causing the irregular signals. Your doctor will explain the options that fit your health needs.
When is surgery considered?
If medications don't control your symptoms or you can't tolerate them, a doctor might suggest catheter ablation. This is a minimally invasive procedure done in a hospital. It's not right for everyone, and your healthcare team will discuss whether it could help you.
Living with this condition
Many people with AFib live full, active lives. The key is to keep your heart as healthy as possible and stay on top of your treatment plan. Take any prescribed medicine exactly as directed, keep your appointments, and note any changes in how you feel.
Lifestyle tips
- Make sleep a priority — go to bed and wake up at similar times each day
- Manage stress with calming activities like walking, reading, or listening to music
- Stay hydrated throughout the day
- Limit alcohol and avoid drinking late at night
- Ask your doctor about how caffeine affects your heart
Diet and exercise
Eat a heart-friendly diet full of vegetables, fruits, whole grains, beans, and fish. Try to limit salty snacks and processed foods. Regular exercise like walking, cycling, or swimming can strengthen your heart, but check with your doctor before starting a new routine. Aim for at least 150 minutes of moderate activity each week, or as advised by your care team.
Mental health and emotional wellbeing
Living with a heart condition can create worry and anxiety. You may feel stressed about your sleep or your heart. That's completely normal. Talking to a counsellor, joining a support group, or simply sharing your feelings with loved ones can help you cope.
Prevention
You can't always prevent AFib, but you can lower your risk. Getting enough sleep, treating sleep problems like apnea, controlling blood pressure, staying active, and limiting alcohol can all make a big difference. If you already have AFib, these steps can help reduce flares.
Vaccines
There are no vaccines that prevent AFib, but staying up to date on recommended vaccines such as flu and COVID-19 can help protect you from infections that might stress your heart.
Screening programmes
There is no routine screening test for AFib for everyone. However, your doctor may check your pulse during a visit. If you have risk factors, they might suggest an ECG from time to time.
Complications
If left untreated
- Atrial fibrillation can lead to blood clots in the heart, which may travel to the brain and cause a stroke.
- A fast or irregular heartbeat can weaken the heart over time, leading to heart failure.
- Ongoing symptoms like fatigue and shortness of breath can make everyday activities difficult.
Long-term outlook
With proper care, the outlook for AFib is generally good. Many people control their symptoms and stay active for years. Treating sleep problems and following your doctor's advice can improve your energy and lower your risk of complications. You are not alone in this — your healthcare team is there to support you.
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Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
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Sources and guidance
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: August 2, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.
Guidance may differ by country or region. Confirm local recommendations with a qualified healthcare provider.