What Are Heart Palpitations?
You are sitting quietly, maybe scrolling your phone after dinner, and suddenly you notice your heart. It is racing, pounding or fluttering. That awareness of your own heartbeat is what doctors call heart palpitations.
Most of the time, you do not feel your heart beating at all. With palpitations, the beat feels stronger, faster, slower or just irregular. It may last a few seconds or several minutes. You may feel it in your chest, throat or even your neck.
If you have ever wondered, "Why does my heart race?", you are in good company. Palpitations are very common, and most are harmless. But in some people they point to an underlying heart rhythm problem or another medical condition. This guide explains the causes of heart palpitations, how they are checked, and when to worry. [1][2]
A quick note on heart rate: A normal resting heart rate for adults is generally around 60 to 100 beats per minute. Palpitations are not defined by the number. They are defined by the sensation that your heartbeat feels unusual.
Common Symptoms of Heart Palpitations
People describe heart palpitations symptoms in different ways. You might feel:
- Racing: your heart suddenly feels very fast, as if you have just run up stairs
- Pounding or thumping: each beat feels strong and forceful
- Fluttering: a light, rapid, "butterfly" sensation in the chest
- Skipped beats: a pause, then a hard thump
- Extra beats: a feeling of an additional beat in between
- Irregular rhythm: beats that feel uneven or out of step
Some people also feel a flip-flop in the neck or throat, light-headedness, sweating or a sense of unease alongside the palpitations.
Here is the key point: how it feels does not always tell you how serious it is. A dramatic pounding sensation can be harmless, while a quiet, irregular rhythm can sometimes need treatment. That is why the other symptoms that come with it matter so much. We cover these below. [1][3]
Why Does Your Heart Race? Common Everyday Causes
Many episodes of fast heartbeat come from everyday triggers. Your heart simply speeds up in response to something your body is dealing with.
- Stress and anxiety. Stress hormones such as adrenaline raise your heart rate. Panic attacks often cause intense racing and pounding. [1][2]
- Lack of sleep. Long hours of work, late-night screen time and irregular sleep can leave your heart more reactive.
- Dehydration. When you drink too little, especially in the Indian summer, blood volume drops and your heart works harder to compensate.
- Caffeine. Strong chai, filter coffee, cold coffee, cola and energy drinks all contain caffeine. Sensitivity varies a lot from person to person, so two cups of tea may be fine for one person and cause racing in another.
- Smoking and tobacco. Nicotine speeds up the heart. This includes cigarettes, beedis, vapes, and chewing tobacco.
- Alcohol. Even moderate drinking can set off palpitations in some people, and heavy binge drinking can trigger irregular heart rhythms.
- Fever and infection. Heart rate rises as body temperature rises.
- Intense physical activity. A fast heartbeat during or after hard exercise is normal. It should settle down as you rest.
- Hormonal changes. Pregnancy, periods and menopause can cause palpitations in some women.
- Certain medicines and substances. Some cold and cough remedies containing decongestants, asthma inhalers, thyroid tablets and some herbal or weight-loss products can raise the heart rate. Do not stop any prescribed medicine on your own. Speak to your doctor first.
If you notice that your heart races after a particular habit, such as the third cup of chai or a night of poor sleep, that is a useful clue. Note it down and share it with your doctor.
Medical Conditions That Can Cause Palpitations
Sometimes there is more going on than lifestyle. Here are the common medical causes of a fast heartbeat.
Heart rhythm problems (arrhythmias)
An arrhythmia is an abnormal heart rhythm. The heart may beat too fast, too slow or unevenly. Some of the more common types include:
- Premature beats (ectopics): early extra beats that feel like a skip or flutter. Often harmless, but need evaluation.
- Supraventricular tachycardia (SVT): sudden episodes of a very fast, regular heartbeat that start and stop abruptly.
- Atrial fibrillation (AF): an irregular, often fast rhythm that raises the risk of stroke. It needs medical treatment.
- Ventricular arrhythmias: abnormal rhythms from the lower chambers of the heart, some of which can be dangerous.
Thyroid disorders
An overactive thyroid (hyperthyroidism) speeds up the body's metabolism and can cause a fast heartbeat, weight loss, sweating, tremors and heat intolerance. A simple blood test can check thyroid function.
Anaemia
Anaemia is common in India, particularly among women. When there is less haemoglobin to carry oxygen, the heart beats faster to deliver more blood. You may also feel tired, pale and breathless.
Other conditions
- Heart valve disease and other structural heart problems
- Previous heart attack or heart muscle disease (cardiomyopathy)
- High blood pressure
- Low blood sugar
- Low levels of potassium, magnesium or other salts in the blood
- Lung conditions, and sleep apnoea
- Blood loss or severe dehydration
This list is not meant to alarm you. It explains why doctors do not assume that palpitations are "just anxiety" without a proper check. [1][2][3]
Heart Palpitations After Eating or at Night
Heart palpitations after eating
Some people feel their heart racing after a meal. Possible triggers include:
- Large, heavy meals, particularly those rich in refined carbohydrates or sugar
- Caffeine, such as chai or coffee with or after food
- Alcohol
- Spicy or very salty food in some people
- Acid reflux or bloating, which can feel like chest discomfort
- Food sensitivities in some individuals
- Blood sugar swings, particularly in people with diabetes
Try keeping a short diary of what you ate and when your symptoms started. It helps your doctor spot patterns.
Heart palpitations at night
Palpitations are often more noticeable when you lie down. It is quiet, there are fewer distractions, and you may be pressing on your chest or lying on your left side. Other reasons can include:
- Caffeine or alcohol in the evening
- A late or heavy dinner
- Stress, worry or an anxious mind at bedtime
- Sleep apnoea (snoring with breathing pauses)
- Heart rhythm disturbances
- Low blood sugar overnight in people on diabetes medicines
When these need attention
See a doctor if the episodes are frequent, keep getting worse, wake you from sleep, or come with breathlessness, dizziness or chest discomfort. If any episode comes with chest pain, severe breathlessness or fainting, treat it as an emergency (see below). [1][2]
Are Heart Palpitations Dangerous? When to Worry About Heart Palpitations
The honest answer is: it depends. Most palpitations are harmless, but some are not.
| Usually less worrying | Needs medical attention |
|---|---|
| Brief episodes that settle quickly | New, frequent, worsening or persistent palpitations |
| Clear trigger (stress, caffeine, poor sleep, exercise) | Episodes with no obvious trigger |
| No other symptoms | Palpitations with dizziness, breathlessness or chest discomfort |
| No known heart disease | Known heart disease, or a family history of sudden cardiac death or heart rhythm problems |
| Settle after rest, fluids or avoiding the trigger | Very rapid or irregular heartbeat that does not settle |
Call for emergency help immediately if palpitations come with:
- Chest pain or pressure
- Severe shortness of breath
- Fainting or feeling like you are about to faint
In India, call 112 (national emergency number) or 108 (ambulance in many states), or go to the nearest emergency department. Do not drive yourself.
Also, do not assume that palpitations are always caused by anxiety or stress. Anxiety is a common cause, but it should not be accepted as the reason until other causes have been considered. Heart racing for no reason deserves proper evaluation, especially if it keeps happening. [1][2][3]
How Are Heart Palpitations Diagnosed?
Your doctor will start by asking about your symptoms, medical history, family history, medicines, caffeine, alcohol and tobacco use, and your sleep and stress levels. They will examine you and check your pulse and blood pressure. Depending on your situation, they may recommend:
- ECG (electrocardiogram): a quick, painless test that records the heart's electrical activity. It is useful if you have symptoms at the time of the test.
- Holter monitor: a small portable device worn for 24 to 48 hours (sometimes longer) that records your heart rhythm continuously as you go about your day.
- Event monitor: worn or used for weeks, and activated when you have symptoms. This is helpful if episodes happen only occasionally.
- Blood tests: these can check for anaemia, thyroid problems, kidney function, blood sugar and levels of salts like potassium and magnesium.
- Echocardiogram: an ultrasound scan of the heart that checks its structure, valves and pumping function.
- Other tests: in some cases, a stress test, or a more detailed heart rhythm study, may be advised.
A normal ECG in the clinic does not always rule out a rhythm problem, because the palpitations may not happen while you are being tested. That is why longer monitoring is sometimes needed. [1][3][4]
Treatment for Heart Palpitations
Treatment for heart palpitations depends on the cause. There is no single treatment that suits everyone, and diagnosis and treatment depend on your symptoms, medical history and test results.
- If no cause needing treatment is found, the doctor may simply advise reassurance, lifestyle changes and follow-up.
- If a trigger is the cause, reducing or avoiding it, such as caffeine, alcohol, tobacco or certain medicines (under medical advice), can help.
- If it is due to a medical condition, treating that condition is the priority. For example, anaemia may be treated with iron or other measures, and an overactive thyroid with appropriate thyroid treatment.
- If it is a heart rhythm disorder, options may include medicines, procedures such as catheter ablation, or devices such as pacemakers, depending on the type and severity. Your cardiologist will decide what is suitable.
- If stress or anxiety is contributing, counselling, relaxation techniques and other support can help alongside a proper medical check.
Please do not self-medicate. Do not take beta-blockers, anti-arrhythmic medicines, supplements or herbal remedies for palpitations without medical advice. They can be unsafe for some people and may hide a problem that needs treatment.
Some doctors teach simple techniques, such as certain breathing exercises or manoeuvres, for specific types of fast rhythm. These should be learned from a doctor who has confirmed your diagnosis. [1][2][3]
How to Prevent Heart Palpitations
You cannot prevent every episode, but these steps may help reduce triggers. They are general tips and not a guarantee.
- Stay hydrated. Drink water regularly through the day, especially in hot weather, during fever, or after exercise.
- Protect your sleep. Aim for a regular sleep schedule, and cut back on late-night screens.
- Watch your caffeine. Notice how many cups of chai, coffee, cola or energy drinks you have. Try cutting back gradually if you suspect they are a trigger. Energy drinks in particular are best avoided if you get palpitations.
- Manage stress. Try regular walking, yoga, meditation, deep breathing, hobbies and time with family or friends. Seek help if anxiety is affecting your daily life.
- Avoid tobacco and limit alcohol. Quitting smoking and tobacco supports your heart in many ways.
- Exercise regularly. Moderate activity, such as brisk walking, helps heart health. Ask your doctor what is safe for you if you have palpitations.
- Eat regular, balanced meals. Avoid very heavy meals late at night.
- Know your personal triggers. Keep a simple diary of what you were doing, eating or feeling when palpitations happened.
- Keep up with health checks. Manage blood pressure, diabetes, thyroid conditions and anaemia with your doctor.
- Check medicines with your doctor or pharmacist before using cough and cold remedies, supplements or herbal products.
When Should You See a Cardiologist?
Book an appointment with a doctor, and a cardiologist if advised, if you have:
- New palpitations that you have not had before
- Palpitations that are frequent, getting worse or lasting longer
- Episodes that do not settle after a few minutes
- Palpitations with dizziness, light-headedness or unusual tiredness
- Palpitations at rest, at night, or without a clear trigger
- Known heart disease, high blood pressure, diabetes or a thyroid problem
- A family history of heart rhythm problems, cardiomyopathy or sudden cardiac death
- Palpitations during pregnancy
Go to the emergency department or call 112 or 108 straight away if palpitations occur with chest pain or pressure, severe breathlessness, or fainting or near-fainting.
Conclusion
Heart palpitations can be unsettling, but they are often harmless and linked to everyday triggers like stress, too much caffeine or poor sleep. Still, a racing heart can sometimes signal a thyroid problem, anaemia or a heart rhythm disorder, so it is wise not to ignore new, frequent or worsening symptoms.
Pay attention to your triggers, look after your sleep and hydration, and see a doctor if something feels off. And if palpitations come with chest pain, severe breathlessness or fainting, get emergency help straight away.
Medical Disclaimer
This article is for general information and education only. It is not a substitute for professional medical advice, diagnosis or treatment, and it does not provide individual medical advice. Always consult a qualified doctor with any questions about a medical condition or symptoms. Do not start, stop or change any medicine or supplement without medical supervision. In an emergency, call 112 or go to the nearest hospital.
