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Free Healthbeat Signup Get the latest in health news delivered to your inbox! Sign Up. Close Thanks for visiting. The Best Diets for Cognitive Fitness , is yours absolutely FREE when you sign up to receive Health Alerts from Harvard Medical School Sign up to get tips for living a healthy lifestyle, with ways to fight inflammation and improve cognitive health , plus the latest advances in preventative medicine, diet and exercise , pain relief, blood pressure and cholesterol management, and more.
The body uses epinephrine to prepare a person for immediate action. Epinephrine can cause a person to experience :. A person who experiences stressful emotions regularly may be at risk of developing certain conditions. A person may be able to manage their stress in the following ways :. Learn more about treating and managing stress here. Caffeine is a stimulant found in many drinks, such as coffee, tea, certain sodas, and energy drinks.
Caffeine powder is also available as a dietary supplement. However, the amount of caffeine a person can consume without adverse effects depends on their caffeine sensitivity. Learn how alcohol affects the body here. Nicotine is a highly addictive chemical found in cigarettes.
According to the AHA, nicotine can cause increased blood pressure and heart rate. Illegal stimulants, such as cocaine and amphetamines, can cause a person to have a higher heart rate.
Research from found that people who use cocaine were more likely to experience irregular or increased heart rates. Doctors sometimes use amphetamines to treat people who have ADHD or narcolepsy. However, amphetamines can cause a series of side effects, including :.
Learn more about amphetamines here. These medications include:. Find out more about the causes of heart palpitations here. Bitter orange: People might use bitter orange for heartburn, nasal congestion, weight loss, appetite suppression or stimulation, and athletic performance. Certain studies state that it can cause rapid heartbeat; however, the results were inconclusive.
Gym goers new to spin classes and CrossFit, even those who may be super fit, can be at risk of rhabdomyolysis due to over-exertion from exercise. The keto diet continues to be one of the most popular weight loss diets. But is it heart-friendly and is it sustainable? Symptoms like shortness of breath, palpitations and fatigue could point towards mitral valve regurgitation. MitraClip can be performed to treat this condition without the need for open-heart surgery. High blood pressure and heart diseases are closely interlinked, yet many of us are unaware of this fact.
But we should be, as their prevalence is much more common than we think. Sports injuries can happen to anyone, but they can be easily avoided. Here are 9 common injuries and how they can be prevented.
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Although common, it is highly preventable. Learn how to prevent them and when to see a doctor. Tonsillitis is a painful inflammation of the tonsils. Read more to find out the symptoms, causes, and treatments available for the condition. Leading a healthy lifestyle requires balance in all aspects of your life.
Physical activity is no exception. Excessive exercise may have negative effects on your heart and overall health. What are the signs of an unhealthy heart? What should you do in the event of a heart attack? Dr Lim Choon Pin answers 10 popular questions about heart health. E-scooters are on the rise in Singapore, and so are scooter-related accidents.
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Listen to your body and understand your limits before attempting to go past your maximum heart rate during a workout. Officially, high blood pressure affects So, how can we go about treating this silent killer? As heart disease could lead to a heart attack or stroke, it is important to make healthy lifestyle changes sooner rather than later.
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You have heard time and again that eating whole grains is the healthy way to go. But why? This can starve your organs and tissues of oxygen and can cause the following tachycardia-related signs and symptoms:. Some people with tachycardia have no symptoms, and the condition is only discovered during a physical examination or with a heart-monitoring test called an electrocardiogram.
A number of conditions can cause a rapid heart rate and tachycardia symptoms. It's important to get a prompt, accurate diagnosis and appropriate care. See your doctor if you or your child has any tachycardia symptoms. If you faint, have difficulty breathing or have chest pain lasting more than a few minutes, get emergency care, or call or your local emergency number.
Seek emergency care for anyone experiencing these symptoms. Tachycardia is caused by something that disrupts the normal electrical impulses that control the rate of your heart's pumping action. Many things can cause or contribute to a fast heart rate. These include:. In a typical heart rhythm, a tiny cluster of cells at the sinus node sends out an electrical signal. The signal then travels through the atria to the atrioventricular AV node and into the ventricles, causing them to contract and pump blood.
To understand the causes of heart rate or rhythm problems such as tachycardia, it helps to understand how the heart's electrical system works. Your heart is made up of four chambers — two upper chambers atria and two lower chambers ventricles. Your heartbeat is normally controlled by a natural pacemaker called the sinus node, which is located in the right atrium.
The sinus node produces electrical impulses that normally start each heartbeat. From the sinus node, electrical impulses travel across the atria, causing the atrial muscles to contract and pump blood into the lower chambers of the heart ventricles. The electrical impulses then arrive at a cluster of cells called the atrioventricular AV node — usually the only pathway for signals to travel from the atria to the ventricles.
The AV node slows down the electrical signal before sending it to the ventricles. This slight delay allows the ventricles to fill with blood. When electrical impulses reach the muscles of the ventricles, they contract, causing them to pump blood either to the lungs or to the rest of the body. When anything disrupts this complex system, it can cause the heart to beat too fast tachycardia , too slow bradycardia or with an irregular rhythm.
Growing older or having a family history of tachycardia or other heart rhythm disorder makes you more likely to develop tachycardia. Any condition that puts a strain on the heart or damages heart tissue can increase your risk of tachycardia. Such conditions include:.
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