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  • What Happens During a Heart Attack? - What is Coronary Heart Disease?

  • What is Coronary Heart Disease?

  • Coronary heart disease or CHD

  • refers to a narrowing of the coronary arteries,

  • the blood vessels that supply oxygen and blood to the heart.

  • It is also known as coronary artery disease.

  • It is the utmost cause of major illnesses

  • and deaths worldwide.

  • Coronary heart disease normally happens

  • when fatty deposits called cholesterol

  • accumulates on the artery walls,

  • creating plaques.

  • The arteries are being tightened

  • and makes it difficult for blood to flow to the heart.

  • CHD may also be caused

  • by blood clots or thrombus

  • that totally occludes the blood flow.

  • When these blockages occur

  • it is called coronary occlusion.

  • Most of the blocks in the artery

  • are caused by a combination of atheroma in atherosclerosis

  • and thrombus in thrombosis.

  • Atherosclerosis and arteriosclerosis

  • is the narrowing and hardening of arteries

  • by atheroma or cholesterol deposition,

  • so they could not dilate.

  • The blockages or occlusion then causes myocardial infarction

  • or heart attack,

  • which is the sudden slowing

  • or stopping of contractions of the heart muscles.

  • CHD commonly induces angina pectoris or chest pain and shortness of breath.

  • This could be due to the malfunction of the cardiac muscles.

  • Its parts could die owing to the lack of oxygen

  • supposedly delivered by the clotted blood.

  • CHD can also be caused by hypertension.

  • It happens when blood flows through the blood vessels

  • in a consistent high pressure.

  • Causes of Coronary Heart Disease

  • CHD can be caused even by genetics.

  • Certain mutations in the genes are linked to it.

  • But mostly,

  • this disease is due to unhealthy lifestyle habits.

  • A study published in PLOS in 2017

  • even linked CHD to the use of high heat in food preparation.

  • An unhealthy diet rich in cholesterol and saturated fats

  • leads to high blood cholesterol levels,

  • worsening the situation.

  • Smoking is one of the most damaging lifestyle to your heart function.

  • Toxic contents in tobacco

  • limit the blood's ability to carry oxygen.

  • The carbon monoxide in cigarette smoke

  • relocates some of the oxygen supposedly in the blood.

  • This condition forces the heart to work harder to supply enough oxygen

  • then results in increasing heart rate and blood pressure.

  • Women who smoke

  • or inhale secondhand smoke

  • and take birth control pills

  • are at greater risk of having a heart attack or stroke

  • than those who do not.

  • Both the smoke and pills

  • carry increased risk of blood clot.

  • On top of all,

  • being stressed lets out adrenaline hormone

  • and raises the heart rate and blood pressure.

  • Prevention

  • Make plans to stop smoking

  • and do not start one.

  • Avoid all forms of tobacco use,

  • as all are equally harmful.

  • Set out a diet enriched by fruits,

  • vegetables, and whole grains.

  • It helps to protect our hearts.

  • Prefer beans,

  • low or free fat dairy products,

  • lean meats, and fishes for a healthier diet

  • and eat less sugar and salt.

  • Limiting certain fats you eat is also important.

  • Start to exercise regularly

  • and maintain weight.

  • Finally, find a way to reduce stress in your life.

What Happens During a Heart Attack? - What is Coronary Heart Disease?

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B2 US coronary blood heart disease disease cholesterol oxygen

What Happens During A Heart Attack? - What is Coronary Heart Disease?

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    謝采揚 posted on 2021/02/16
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