Yes, anxiety can cause heart palpitations—here's why

Anxiety causes heart palpitations through a direct physical chain. When you feel anxious, your nervous system releases adrenaline and cortisol. These hormones make your heart beat faster, harder, or irregularly. You may feel your heart racing, pounding, skipping beats, or fluttering. These sensations are real—your heart is actually changing its rhythm—and they are a normal part of how anxiety affects your body.

The palpitations themselves are not dangerous in most cases. A healthy heart can handle the stress hormones anxiety produces. But the sensation can feel alarming, which often makes anxiety worse. You notice your heart racing, worry that something is wrong, and the worry itself triggers more adrenaline. This cycle can turn a brief moment of anxiety into a sustained episode.

Key Takeaways

  • Anxiety triggers the release of stress hormones that make your heart beat faster or irregularly, creating sensations you can feel and sometimes hear.
  • Heart palpitations from anxiety are usually harmless, but they feel real and can create a cycle where noticing them makes anxiety worse.
  • Palpitations that come with chest pain, shortness of breath, dizziness, or fainting need medical evaluation to rule out heart problems.
  • A doctor can use an EKG or heart monitor to confirm that palpitations are anxiety-related and not caused by a heart condition.
  • Breaking the anxiety-palpitation cycle often requires both calming techniques in the moment and longer-term anxiety management.

How the anxiety-palpitation cycle works

The sequence usually starts with a trigger—a stressful thought, situation, or even a random bodily sensation. Your amygdala, the part of your brain that processes threat, signals your sympathetic nervous system to prepare for danger. This system floods your bloodstream with adrenaline and cortisol within seconds.

Adrenaline makes your heart pump faster and with more force. It also makes your heart more electrically sensitive, which can cause irregular beats. At the same time, your blood vessels constrict, your breathing quickens, and your muscles tense. You are now in fight-or-flight mode—a state your body designed for physical danger, not for sitting at a desk or lying in bed.

The problem is that you notice these changes. Your heart pounding becomes the new threat. You think, "Why is my heart racing? Is something wrong with me?" That thought itself is a threat signal, so your nervous system releases more adrenaline. The cycle repeats, and what started as mild anxiety can escalate into a full panic attack.

What palpitations from anxiety feel like

Anxiety-related palpitations take several forms. Some people describe a racing heartbeat—a sense that their heart is going too fast, sometimes 100 to 150 beats per minute or higher. Others feel a pounding sensation, as if their heart is hitting hard against their ribs. Some notice their heart skipping beats or fluttering, a sensation like a bird trapped in your chest.

You might feel palpitations in your chest, neck, or throat. You might hear your heartbeat in your ears. Some people become hyperaware of their pulse and can feel it everywhere. The sensation is often worse when you are lying down, because you have fewer distractions and your attention naturally turns inward.

These sensations are real—your heart really is beating differently. But they are not a sign of a heart attack or immediate danger. Anxiety-related palpitations are your nervous system working exactly as it evolved to work, just activated by a false alarm.

When palpitations need medical evaluation

Most palpitations from anxiety are harmless, but some warrant a doctor's assessment. Seek medical evaluation if palpitations come with chest pain, pressure, or tightness; shortness of breath that does not match your activity level; dizziness or lightheadedness; fainting or near-fainting; or a sensation that your heart is beating dangerously fast for an extended period.

A doctor will typically perform an electrocardiogram (EKG), which records your heart's electrical activity and takes about five minutes. They may also ask you to wear a portable heart monitor for 24 hours or longer to capture your heart rhythm during daily life. Blood tests can check for thyroid problems or other conditions that mimic anxiety symptoms. These tests are not invasive and can rule out structural heart problems or arrhythmias that need treatment.

Even if your palpitations are anxiety-related, getting medical clearance is valuable. Knowing that your heart is structurally sound often reduces anxiety itself, which can break the cycle. You can then focus on managing anxiety rather than worrying about your heart.

How to interrupt palpitations in the moment

When you notice palpitations starting, your first instinct is often to panic or check your pulse repeatedly. Both of these actions feed the anxiety cycle. Instead, try grounding techniques that shift your attention away from your heart and back to your surroundings.

One effective method is the 5-4-3-2-1 technique: name five things you can see, four you can touch, three you can hear, two you can smell, and one you can taste. This engages your senses and pulls your mind out of the threat-detection loop. Another approach is slow, deep breathing—specifically, breathing out longer than you breathe in. Exhaling for a count of six while inhaling for a count of four activates your parasympathetic nervous system, which is the brake pedal for anxiety.

Physical movement also helps. A short walk, gentle stretching, or even standing up and changing rooms can interrupt the cycle. Movement tells your body that you are not in danger—if you were, you would not be able to move freely. It also burns off some of the adrenaline in your system.

Avoid checking your pulse or asking others "Is my heart okay?" repeatedly. These behaviors reinforce the idea that your heart is a threat worth monitoring, which keeps anxiety high. Instead, acknowledge the palpitations ("My heart is racing because I am anxious"), remind yourself that this is temporary, and redirect your attention.

Long-term approaches to reduce palpitations

Breaking the anxiety-palpitation cycle for good usually requires addressing the underlying anxiety, not just managing palpitations when they happen. Cognitive behavioral therapy (CBT) is the most researched approach. In CBT, a therapist helps you identify the thoughts that trigger anxiety, test whether those thoughts are accurate, and develop new responses. For palpitations specifically, CBT teaches you to notice your heart racing without interpreting it as danger.

Regular aerobic exercise—walking, running, swimming, or cycling for 20 to 30 minutes most days—reduces baseline anxiety and makes your nervous system less reactive. Exercise also improves cardiovascular fitness, which means your heart handles stress more efficiently. Meditation and mindfulness practices train your attention so you are less likely to fixate on bodily sensations.

Sleep, caffeine, and alcohol all affect anxiety and palpitations. Poor sleep makes your nervous system more reactive. Caffeine is a stimulant that can trigger palpitations directly and also amplifies anxiety. Alcohol disrupts sleep and can cause irregular heartbeats. Reducing caffeine and alcohol and prioritizing seven to nine hours of sleep can noticeably decrease palpitations.

If anxiety is severe or persistent, medication can help. Selective serotonin reuptake inhibitors (SSRIs) like sertraline or paroxetine reduce anxiety over weeks to months. Beta-blockers can slow your heart rate and reduce the sensation of palpitations, though they do not treat the underlying anxiety. A doctor can discuss which option fits your situation.

The difference between anxiety palpitations and heart problems

Anxiety palpitations and palpitations from heart problems can feel similar, which is why medical evaluation matters. But there are some patterns that differ. Anxiety palpitations usually start suddenly in response to a trigger, last minutes to hours, and stop when anxiety decreases. They often come with other anxiety symptoms like sweating, trembling, or a sense of dread.

Palpitations from heart problems tend to be more consistent and less tied to emotional triggers. They may occur during rest or sleep. They are more likely to come with chest pain, shortness of breath during normal activity, or fainting. Heart problems also tend to run in families or occur in people with known risk factors like high blood pressure or diabetes.

The only way to know for certain is testing. An EKG or heart monitor can show whether your heart rhythm is normal or abnormal. If the tests are normal, you can be confident that your palpitations are anxiety-related and focus on anxiety management.

Frequently Asked Questions

Can anxiety palpitations cause a heart attack?

Anxiety palpitations themselves do not cause a heart attack. A heart attack happens when blood flow to the heart muscle is blocked, usually by a blood clot in a narrowed artery. Anxiety does not create that blockage. However, severe or chronic stress can contribute to high blood pressure and other risk factors over time, so managing anxiety is still important for overall heart health.

Why do palpitations feel worse at night?

At night, you have fewer distractions and your attention naturally turns inward, so you notice your heartbeat more easily. Lying down can also make palpitations more noticeable because your heart's movement is less dampened by activity. Additionally, anxiety and racing thoughts often intensify at night when you are trying to sleep, which triggers the physical response.

How long do anxiety palpitations usually last?

Palpitations from a single anxiety episode typically last from a few minutes to an hour, depending on how quickly you calm your nervous system. If anxiety persists or cycles, palpitations can continue intermittently throughout the day. Chronic anxiety can lead to frequent palpitations over weeks or months, which is why addressing the underlying anxiety is important.

Can I exercise if I have anxiety palpitations?

Yes, and exercise is actually one of the best long-term treatments for anxiety. Start with gentle activity like walking if palpitations are active, and gradually build to more intense exercise as your anxiety improves. Avoid intense exercise during an acute anxiety episode, but regular aerobic activity most days of the week reduces how often palpitations occur.

What should I tell my doctor about my palpitations?

Tell your doctor when the palpitations started, what they feel like, how long they last, what triggers them, and what makes them better or worse. Mention any other symptoms like chest pain, shortness of breath, or fainting. Describe your stress level and anxiety symptoms. Bring a list of any medications or supplements you take. This information helps your doctor determine whether testing is needed and whether anxiety is the cause.