字幕表 動画を再生する
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.