March 12, 2026

Athens News

News in English from Greece

The “silent” factor of heart attack: why high blood pressure is more dangerous than it seems


Arterial hypertension often called a “silent disease” because it can damage the body for years without causing significant symptoms.

One of the most serious consequences of long-term high blood pressure is its connection with myocardial infarction. A logical question arises: does hypertension directly cause a heart attack or does it only increase the risk?

What does high blood pressure do to the cardiovascular system?

Blood pressure is the force with which blood pushes against the walls of the arteries with each contraction of the heart. When this force remains high for a long time, it causes chronic mechanical stress on blood vessels and heart.

Over time this leads to:

  • damage to the internal lining of the arteries;
  • thickening and loss of elasticity of vascular walls;
  • increased load on the heart muscle.

It is these changes that create the conditions for development coronary heart disease – the main cause of heart attack.

How hypertension increases the risk of heart attack

Hypertension rarely causes a heart attack suddenly and directly. More often she launches slow, cumulative processwhich makes a heart attack more likely over time.

Key mechanisms:

1. Damage to arterial walls
Constantly increased pressure injures the inner layer of the arteries, making it easier to:

  • accumulation of cholesterol;
  • development of inflammation;
  • formation of atherosclerotic plaques.

It speeds up atherosclerosis and narrowing of the coronary arteries.

2. Decreased blood supply to the heart muscle
As plaques grow, the flow of blood and oxygen to the heart decreases. Under conditions of physical activity or stress, this may not be enough, which increases the risk of a heart attack.

3. Increased tendency to form blood clots
Hypertension worsens the condition of the vascular wall and promotes the formation of blood clots. A sudden blockage of an already narrowed artery can lead to a heart attack.

4. Structural overload of the heart
The heart has to work with increased effort, which causes thickening of the myocardium, especially the left ventricle. Over time, this reduces the reserve capacity of the heart.

Is hypertension alone enough to cause a heart attack?

Hypertension is rarely the only cause of heart attack, but is one of the most powerful risk factors. The danger increases sharply if it is combined with:

  • high cholesterol;
  • smoking;
  • diabetes mellitus;
  • obesity;
  • sedentary lifestyle;
  • hereditary predisposition.

Even without these factors, hypertension itself significantly increases the risk compared to normal blood pressure.

Why the “silent” nature of hypertension is especially dangerous

Many people with high blood pressure feel fine. The absence of symptoms allows damage to blood vessels and the heart to progress unnoticed, sometimes for years.

That is why hypertension is often detected after first heart attackwithout preliminary alarm signals.

Does blood pressure control reduce the risk of heart attack?

Yes. Long-term clinical evidence shows that controlling blood pressure significantly reduces the risk of heart attack, stroke and heart failure.

Pressure reduction:

  • slows down the development of atherosclerosis;
  • reduces the load on the heart;
  • reduces the risk of plaque rupture and blood clots.

Even a moderate decrease in pressure over time gives a significant protective effect.

Frequently Asked Questions

Can a heart attack occur with moderately high blood pressure?
Yes. The risk increases gradually. Even a slight excess of the norm, which persists for years, can damage blood vessels.

Does treating hypertension completely eliminate the risk of heart attack?
No, but it significantly reduces it, especially when combined with smoking cessation, cholesterol control, physical activity and a healthy diet.

Can hypertension lead to sudden heart attack?
Typically, damage develops gradually, but sudden surges in pressure against the background of already damaged vessels can trigger an acute event.



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