Atherosclerosis: What It Is, Causes, and Signs of Vascular Damage

Atherosclerosis is a narrowing of the arteries due to deposits on the inner wall of the vessel. A diagnosis in a report means that blood reaches the organ supplied by the affected artery less well. Below is what happens to the vessels and which signs should not be ignored.

Atherosclerosis: what it is in simple terms

The easiest way to picture it is an old pipe: sediment builds up on the walls, the lumen narrows, and the system has to work under greater pressure to push through the same volume. Something similar happens with arteries: plaque accumulates inside the vessel — a sticky mass of cholesterol, fat, blood cells, calcium, and other substances. Over time it hardens, the artery narrows, and the flow of oxygen-rich blood to the organs is limited.

The terms are often confused. Arteriosclerosis is a hardening of the arteries: the walls thicken and lose flexibility, and it has several causes. Atherosclerosis is a common type of arteriosclerosis associated with plaques.

The name depends on the affected vessels: coronary arteries — coronary heart disease, arteries of the legs and arms — peripheral atherosclerosis, arteries of the neck — carotid atherosclerosis, kidneys — renal artery stenosis, intestines — mesenteric ischemia.

How atherosclerosis develops: pathogenesis

Plaques begin to form in childhood and become larger with age. The exact cause is unknown: deposits are thought to appear where the artery wall is damaged — due to lifestyle, diseases, or heredity.

After that, the mechanics take over. While the narrowing is small, blood flow copes and the person feels nothing. Symptoms appear when the organ needs more oxygen — during physical exertion or emotional stress.

The key point in pathogenesis is plaque rupture. A thrombus may form at its site, which either blocks the artery completely or travels with the blood to another part of the body.

Causes of vascular atherosclerosis

Atherosclerosis is not about a single factor but about their combination. The likelihood of the disease is increased by:

• high blood pressure, high cholesterol, diabetes, metabolic syndrome, inflammatory diseases such as rheumatoid arthritis and psoriasis, kidney disease;
• age — risk rises after age 45 in men and after age 55 in women, with the general threshold for increased attention being over 50 years;
• smoking and chewing tobacco, excess body weight, a diet high in saturated fats;
• close relatives with cardiovascular diseases or a family history of high cholesterol.

Signs of atherosclerosis: how it manifests

In the early stages there are often no symptoms at all. Common signs: chest pain, pain in the arms and legs (especially with exertion), shortness of breath, constant fatigue, weakness, confusion.

After that, the picture depends on the vascular territory. Coronary arteries — angina, palpitations and irregular heartbeat, shortness of breath. Carotid arteries — a bruit over the vessel that the doctor hears with a stethoscope, and a transient ischemic attack, a mini-stroke. Arteries of the legs — pain, heaviness, cramps when walking or climbing stairs. Vertebral arteries — problems with thinking and memory, weakness or numbness on one side of the body or face, visual disturbances. Mesenteric arteries — severe pain after eating, weight loss, diarrhea.

A separate sign that is often underestimated: in men, erectile dysfunction can be an early signal of increased risk of atherosclerosis and its complications.

Atherosclerosis of the heart and cardiac vessels: why it is dangerous

The danger comes not from the plaques themselves but from their consequences. Plaque rupture and thrombosis lead to heart attack, stroke, peripheral artery disease, vascular dementia, and in severe cases — to loss of a limb.

Medicine does not yet trigger a reverse process: there is no treatment that reverses atherosclerosis. The doctor's task is to reduce the likelihood of complications; without lifestyle changes and monitoring, the process progresses over time.

When to see a doctor

Diagnosis begins with a conversation: the doctor asks about family diseases, lifestyle, and risk factors, then performs an examination — listening to the heart and blood flow in the arteries. After that, blood tests and examinations assessing the function of the heart and vessels may be needed; the doctor determines the set.

You should make an appointment if chest pain comes and goes, shortness of breath appears, pain occurs in the arms or legs when walking and with exertion, as well as with any other symptoms that raise questions.

Atherosclerosis itself is not a reason to call an ambulance. 103 and 112 are needed if there are signs of a heart attack (chest pain like a tightening band or heavy weight), signs of a stroke (the face droops on one side, the person cannot hold both arms up, it is difficult to speak), severe breathing with a lack of air, or sudden confusion.

This material is for reference: it explains the mechanism and signs but does not replace a doctor's consultation — conclusions are made by a specialist after examination and tests.

This content is for reference and does not replace a doctor's consultation. Medical disclaimer