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Does chocolate raise heart rate?

Author

Rachel Ellis

Published Jan 24, 2026

Theobromine-rich food

Many people love dark chocolate in particular for its antioxidants, especially flavonols, which provide a range of protective cardiovascular benefits. Dark chocolate may also cause an elevated heart rate and arrhythmia, but more research is needed to confirm this link.

Can chocolate cause your heart to race?

Consuming large quantities of chocolate has been linked to heart palpitations. Chocolate provides the same stimulants as caffeine and can trigger abnormal heart rhythms. An increase in alcohol consumption can cause heart palpitations, especially in patients with previous heart problems.

Does chocolate speed up your heart rate?

heart health, and could actually increase pulse rates, according to new research.

What food will increase heart rate?

15 Incredibly Heart-Healthy Foods

  • Leafy green vegetables. Leafy green vegetables like spinach, kale, and collard greens are well known for their wealth of vitamins, minerals, and antioxidants. ...
  • Whole grains. ...
  • Berries. ...
  • Avocados. ...
  • Fatty fish and fish oil. ...
  • Walnuts. ...
  • Beans. ...
  • Dark chocolate.

How do I lower my resting heart rate quickly?

To relax your heart, try the Valsalva maneuver: “Quickly bear down as if you are having a bowel movement,” Elefteriades says. “Close your mouth and nose and raise the pressure in your chest, like you're stifling a sneeze.” Breathe in for 5-8 seconds, hold that breath for 3-5 seconds, then exhale slowly.

44 related questions found

Why is my heart beating so fast while resting?

According to the Harvard Medical School, rapid heartbeat can be caused by stress, anxiety, dehydration, low potassium, low blood sugar, too much caffeine, hormonal changes and certain prescriptions and over-the-counter drugs. Other conditions that may cause heart flutters may include anemia or hyperthyroidism.

Can eating sugar increase heart rate?

High sugar intake raises insulin levels, which in turn activates the sympathetic nervous system. This leads to an increase in blood pressure and heart rate.

Why does my heart beat faster after eating chocolate?

Researchers believe that foods rich in tyramine, such as cheese, dried yeast, red wine, bananas, and chocolate, may cause atrial fibrillation and a rapid heart rate after eating.

Can too much chocolate cause tachycardia?

Chocolate contains caffeine and theobromine, which are methylxanthines and are competitive antagonists of adenosine and can have arrhythmogenic potential. Our case very well describes an episode of tachycardia precipitated by large amount of chocolate consumption in a patient with underlying substrate.

How long is heart rate elevated after eating?

The increase in cardiac output after a large meal was considerably larger and lasted for longer than the increase after a small meal. Two hours after a small meal cardiac output was nearly or fully back to pre-meal values, while cardiac output was still markedly elevated 2 hours after a large meal.

What foods stop heart palpitations?

If you are experiencing worrying heart palpitations, it's a good idea to avoid foods that cause palpitations. Some of the most common foods that lead to palpitations include: Caffeine. Alcohol.
...
Some dietary supplements can cause heart palpitations, such as:

  • Bitter orange.
  • Ginseng.
  • Ephedra.
  • Valerian.
  • Hawthorn.

Does chocolate cause atrial fibrillation?

The research adjusted for weight to make sure that differences in weight did not affect the findings. But we do know that obesity is a risk factor for atrial fibrillation, and chocolate is a high-calorie food – so if you put on weight due to eating more chocolate, this won't help your risk of AF or your health.

Does theobromine increase heart rate?

Theobromine responses differed according to dose: it showed limited subjective effects at 250 mg and negative mood effects at higher doses. It also dose-dependently increased heart rate.

What is a good resting heart rate by age?

Normal heart rates at rest: Children (ages 6 - 15) 70 – 100 beats per minute. Adults (age 18 and over) 60 – 100 beats per minute.

Should I go to the ER if my heart rate is over 100?

If you're sitting down and feeling calm, your heart shouldn't beat more than about 100 times per minute. A heartbeat that's faster than this, also called tachycardia, is a reason to come to the emergency department and get checked out.

What is considered tachycardia heart rate?

Tachycardia heartbeat

Tachycardia (tak-ih-KAHR-dee-uh) is the medical term for a heart rate over 100 beats a minute. Many types of irregular heart rhythms (arrhythmias) can cause tachycardia. A fast heart rate isn't always a concern.

Why do I wake up suddenly with my heart racing?

Many factors can cause a person to wake up with a racing heart, including diet, stress, sleep deprivation, and arrhythmia. Sometimes, upon waking, it may feel as though the heart is beating very fast or pounding in the chest. A person may also feel shaky or anxious when this happens.

Can theobromine cause heart palpitations?

Theobromine, an ingredient commonly found in chocolate, can also increase your heart rate and cause palpitations. Researchers in one study found that theobromine could have a positive effect on your moods. But at high doses, its effects are no longer beneficial.

Does dark chocolate have more theobromine?

The present study found that theobromine could be found in dark and milk chocolates (Table 2). Theobromine levels were significantly higher in dark chocolates compared to milk chocolates, with 883.11 ± 3.54 and 125.54 ± 0.98 mg theobromine/100 g chocolate, respectively.

What does theobromine do in chocolate?

Theobromine and caffeine, in the proportions found in cocoa, are responsible for the liking of the food/beverage. These compounds influence in a positive way our moods and our state of alertness.

Does dark chocolate raise heart rate?

Results: A single dose of dark chocolate significantly reduced systolic blood pressure and heart rate.

How do you stop heart palpitations?

What can I do to prevent palpitations?

  1. Reduce your stress level (using deep-breathing and/or relaxation exercises, yoga, tai chi, guided imagery) or biofeedback techniques.
  2. Avoid or limit the amount of alcohol you drink.
  3. Avoid or limit the amount of caffeine in your diet.
  4. Do not smoke or use tobacco/nicotine products.

When should I be worried about heart palpitations?

You should contact your doctor if you experience heart palpitations frequently, for longer than a few seconds, or if they are accompanied by dizziness, loss of consciousness, chest or upper body pain, nausea, excessive or unusual sweating, and shortness of breath.

Does water lower heart rate?

Staying hydrated

A 2017 study found that a 335-milliliter drink of water could reduce resting heart rate over a 30-minute period. This decline continued for another 30 minutes. Drinking plenty of beverages throughout the day could lower a person's heart rate.

Why does my heart race after eating sugar?

Consuming lots of sugar can cause the body to release the hormone epinephrine, or adrenaline, which increases heart rate.