Cardiac Health

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Managing cholesterol without or in addition to the use of medication is best done with a combination of diet and exercise. According to WebMD, daily exercise reduces LDL, or "bad" cholesterol, and increases HDL, or "good" cholesterol, by up to 10 percent. Switching to a diet that's low in cholesterol reduces the amount of cholesterol that's consumed, but might not have a measurable effect, as the body produces cholesterol itself.

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  • How is the heart rate regulated?

    Q: How is the heart rate regulated?

    A: Heart rate is regulated by homeostasis, a process by which the body regulates its internal environment during its interaction with the outside environment. A prime example of another variable regulated by homeostasis is body temperature. When the environment is too cold, the brain triggers muscle contractions to raise internal temperature.
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  • What are the signs of a heart attack?

    Q: What are the signs of a heart attack?

    A: The most characteristic symptom of a heart attack, according to the American Heart Association, is a severe, crushing pain in the chest that may radiate outward to the shoulders, arms and neck. Heart attacks can also cause the victim to feel short of breath or panicky and might induce dizziness and a cold, clammy sweat.
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  • What causes a fast heart rate?

    Q: What causes a fast heart rate?

    A: According to the American Heart Association, a heart rate of over 100 beats per minute is also referred to as tachycardia and occurs when the heart's electrical signals interfere with the sinoatrial node that is responsible for maintaining a balanced heart rate. Rapid heart rates can be triggered by anxiety, caffeine consumption, excessive alcohol consumption and smoking.
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  • What causes a rapid heartbeat?

    Q: What causes a rapid heartbeat?

    A: A rapid heartbeat, also known as tachycardia, is caused by a number of factors, including exercise, anxiety or fear, a current or previous heart attack, blocked arteries, high blood pressure, thyroid disorders, substance abuse, stress and some medications and supplements, according to Mayo Clinic. Tachycardia can be normal or a symptom of a bigger problem.
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  • How can you keep your circulatory system healthy?

    Q: How can you keep your circulatory system healthy?

    A: To keep the circulatory system healthy, it is important to exercise on a regular basis, eat a healthy diet and avoid smoking. It helps to keep the body active by doing exercises, such as walking, jogging, running, biking, skating, jumping and swimming. Additionally, it is crucial to reduce consumption of junk and oily foods.
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  • How do you prevent heart disease?

    Q: How do you prevent heart disease?

    A: Anyone of any age can prevent heart disease by adopting a healthy eating and diet plan early, according to the American Heart Association. That means choosing foods that are low in cholesterol, salt, sugar and bad fats, such as saturated fats and trans fats. Eating a wide variety of fruits and vegetables along with good protein sources, such as nuts and lean meats, is also important.
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  • What is the ideal pulse rate?

    Q: What is the ideal pulse rate?

    A: According to the Mayo Clinic, the ideal resting heart rate for a healthy adult is between 60 and 100 beats per minute. More athletic people have a more efficient heart and a lower heart rate, with some high-level athletes exhibiting a heart rate of 40 beats per minute.
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  • When would cardiac output be the greatest?

    Q: When would cardiac output be the greatest?

    A: According to WebMD, cardiac output is greatest during intense exercise and when a person is approximately in his 20s. The more intense the exercise, the more blood the body's muscle demand from the heart and, therefore, the cardiac output is normally greater than at rest.
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  • How do you lower blood pressure without medication?

    Q: How do you lower blood pressure without medication?

    A: To lower blood pressure without medication, a person should lose weight by exercising often and eating a healthy diet, avoid sodium and alcohol, quit smoking and minimize caffeine intake, notes Mayo Clinic. It is also important to make lifestyle changes that diminish the effects of stress on the body.
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  • How do I improve my cardiovascular system?

    Q: How do I improve my cardiovascular system?

    A: According to FitDay, improving the cardiovascular system can be done by cutting back on fats and sugars, eating healthy foods, exercising regularly and getting enough sleep. Good cardiovascular health is crucial for the body not just physically, but psychologically and emotionally as well.
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  • How do you stop heart palpitations?

    Q: How do you stop heart palpitations?

    A: WebMD notes that heart palpitations can be treated by lowering stress and anxiety levels and by avoiding certain beverages, foods, stimulants and medications. In order to treat palpitations effectively, the cause first has to be determined so that the best treatment can be prescribed.
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  • What are signs of heart disease in women?

    Q: What are signs of heart disease in women?

    A: According to WebMD, common heart disease symptoms in women are chest discomfort, pain in the arms, neck or jaw, fatigue, sweating, stomach pain, nausea, lightheadedness and shortness of breath. Additional symptoms, noted by Cleveland Clinic, are anxiety, indigestion and sleep disturbances.
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  • How many people die of obesity each year?

    Q: How many people die of obesity each year?

    A: As of March 2014, the Centers for Disease Control and Prevention (CDC) estimates that 112,000 deaths in the United States are associated with obesity annually. It is important to note that as Americans focus on exercising and eating healthy, combined with the advancements in medical science and national promotions that support reducing obesity, this estimate is likely to fluctuate, according to the CDC.
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  • What is a health cholesterol level?

    Q: What is a health cholesterol level?

    A: A healthy serum cholesterol level is 200 milligrams per deciliter or below, according to Mayo Clinic. Readings of 200 to 239 mg/dL are considered borderline high, while readings of 240 mg/dL are classified as high. Keeping cholesterol levels within healthy limits reduces an individual's risk of developing heart disease.
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  • What are the symptoms of high blood pressure?

    Q: What are the symptoms of high blood pressure?

    A: The majority of those afflicted by high blood pressure, which is also called hypertension, experience no symptoms at all, even when blood pressure reaches dangerous levels. Those who do experience symptoms may have chest pain, fatigue, confusion, irregular heartbeat, difficulty breathing, dizzy spells, dull headaches and nosebleeds. Pounding in the ears, neck or chest may also occur, according to WebMD.
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  • What is a heart tremor?

    Q: What is a heart tremor?

    A: According to the National Heart, Lung, and Blood Institute, a heart tremor, more commonly known as a heart murmur, is when the heart makes an abnormal sound during a physical exam. A murmur is often described by doctors as a whooshing or swishing sound. WebMD reports the majority of murmurs are considered innocent, and an abnormal murmur may be a sign the heart has a damaged valve or other abnormality.
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  • Which arm goes numb during a heart attack?

    Q: Which arm goes numb during a heart attack?

    A: Either arm can go numb during a heart attack, but it is more frequently the left arm. Numbness alone is not a sign of a heart attack and can be caused by a number of other conditions.
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  • What is a heart stent?

    Q: What is a heart stent?

    A: A heart stent is a small tube used to treat narrowed arteries or strengthen weakened arteries, as defined by the National Heart, Lung and Blood Institute. Stent manufacturers use metal mesh or fabric to produce these tubes.
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  • What is a silent heart attack?

    Q: What is a silent heart attack?

    A: A silent heart attack is a heart attack that has no symptoms, according to the American Heart Association. It also sometimes refers to a heart attack with minimal or unrecognized symptoms. In any of these three cases, the person having a heart attack does not realize it.
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  • How do you slow down your heart rate?

    Q: How do you slow down your heart rate?

    A: Regular moderate to vigorous athletic activity can lower a person's resting heart rate, according to WebMD. The best type of exercise for lowering heart rate is aerobic exercise, which strengthens the heart and lungs, increasing the body's use of oxygen. Popular aerobic exercises include brisk walking, jogging, cross-country skiing, swimming, biking and rowing.
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  • What is an anterior infarction?

    Q: What is an anterior infarction?

    A: LearntheHeart.com states that an anterior myocardial infarction is when the anterior, or front, wall of the heart experiences injury due to lack of blood flow. An artery known as the left anterior descending coronary artery usually supplies blood flow to this area of the heart. An anterior myocardial infarction generally indicates that there is a blockage in this artery.
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