Why strokes happen
Why Strokes Happen

Why Strokes Happen? Here Are The Types, and 8 Causes

From the past until now, stroke is one of the most feared diseases. This disease occurs when brain tissue is not functioning properly and blood flow as well as oxygen into it less. Why Strokes Happen? Here Are The Types and Causes.

Types of Stroke Based on Cause

Based on the cause, there are two types of strokes:

Ischemic Stroke.

About 80% of stroke are a type of ischemic stroke. Ischemic Stroke occurs when the arteries that carry blood and oxygen to the brain have narrowed or obstructed, causing blood flow to the brain greatly reduced. This condition is also known as ischemia. Ischemic strokes can be further divided into 2 types, among them:

A thrombotic stroke

A thrombotic stroke, which is a stroke that occurs when a blood clot is formed in one of the arterial veins supplying blood to the brain. The formation of blood clots is caused by a fat heap or plaque that accumulates in the arteries (atherosclerosis) and causes a decrease in blood flow.

An embolic stroke

An embolic stroke, which is a stroke that occurs when blood clots or lumps formed in other parts of the body, generally the heart, carried through the bloodstream and stuck in the blood vessels of the brain, causing the brain arteries to narrow. This type of blood clot is called embolus. One of the heart rhythm disorders, namely atrial fibrillation, often causes an embolic stroke.

Hemorrhagic Stroke.

Hemorrhagic Stroke occurs when blood vessels in the brain rupture and cause bleeding. Bleeding in the brain can be triggered by some conditions affecting the blood vessels. Such conditions include:

  • Uncontrolled hypertension.
  • Weakening of the blood vessel wall (brain aneurysm).
  • Treatment with anticoagulants (blood thinners).

There are two types of hemorrhagic strokes, among others:

Intracerebral bleeding.

In the intracerebral hemorrhage, blood vessels in the brain rupture and shed its contents into the surrounding brain tissues, thereby damaging the brain cells.

Subarachnoid hemorrhage.

In subarachnoid hemorrhage, arteries that are located near the surface of the brain, rupture and shed its contents into the subarachnoid cavity, which is the space between the surface of the brain and skull bones.

Read also:
Hemorrhagic Stroke Treatment + Symptoms

Why Strokes Happen?

To date, there are several things that can cause and increase the risk of stroke. These include:

High blood pressure

The most common cause of stroke is the high blood pressure, or in the medical world called hypertension. You should be aware of the threat of stroke if you have more than 140/90 blood pressure.

Habit of smo**king

Having smo**king habit can increase the risk of stroke. Because the nicotine contained in cigarettes can increase blood pressure (the most common cause of stroke). In addition, cigarette smo**ke can also cause fat in the main neck artery to accumulate, the blood becomes more viscous, and it is more susceptible to clot. The danger of cigarettes also need to be wary of those who are often exposed to cigarette smo**ke.

Lack of exercise

Lack of exercise is one of the causes why strokes happen.

The risk of stroke can be decreased by 36 percent when people diligently exercise or physical activity. No need to exercise heavily, just walk for 30 minutes three times a week.

Unhealthy food

Consuming healthy foods will reduce the risk of stroke by up to 19 percent. Choose foods that contain more fiber and reduce fatty or sweet foods.


Why strokes happen - obesity
Why Strokes Happen? Here Are The Types, and 8 Causes 2

The World Health Organization (WHO) has expressed that obesity has an impact on the cardiovascular health of millions of people. Approximately 2.1 billion of people on earth were obese.

Heart disease

There are two types of strokes. The ischemic stroke is caused by blood clots and becomes 85 percent trigger stroke. The rest is a hemorrhagic stroke, which is caused by bleeding in the brain. Cardiovascular health is one of the keys to lowering the risk of stroke by up to 9 percent.


People who experience it often have high blood pressure and are more likely to be overweight. Both increase the likelihood of stroke.

Diabetes damages your blood vessels, which makes the strokes more likely to occur. If you have a stroke when your blood sugar levels are high, the injury to your brain is greater.

Read also:
Pre Diabetic Symptoms That You Need To Be Aware Of


Some medications may increase your chances of having a stroke. For example, blood thinning drugs, which doctors advise to prevent blood clotting, it can sometimes make a stroke more likely to occur through bleeding.

Research has attributed hormone therapy, which is used for menopause symptoms such as hot flashes, with a higher risk of stroke. Low Estrogen dosages in birth control pills can also make your chances risky.

Read also:
What To Do If Someone Is Having A Stroke?

Thank you very much for reading Why Strokes Happen? Here Are The Types, and Causes, hopefully useful.

Last Updated on August 7, 2020 Reviewed by Market Health Beauty Team

Sharing is caring!