What Raises Cholesterol: Main Causes

Cholesterol is a fat-like substance that no cell membrane can do without. When the number on a lipid panel comes back above the reference range, the first question is usually: what raises cholesterol. Below is a breakdown of the causes without treatment regimens.

Where cholesterol in the body comes from

Cholesterol is a waxy, fat-like substance present in the body's cells. It is needed to produce hormones, vitamin D, and substances that help digest food. The body's own production is sufficient: up to 2.5 g is formed per day, and about 0.5 g comes from food. Dietary sources are animal products: egg yolks, meat, cheese. Cholesterol does not dissolve in water, so it circulates bound to carrier proteins — lipoproteins. HDL returns it to the liver, LDL delivers it to tissues, and their excess is associated with plaque deposition. An analogy is a water pipe: sediment on the walls narrows the lumen of the pipe.

What raises cholesterol: the main causes

Lifestyle is cited as the most common cause. The list of factors includes:

• a diet with excess saturated fats — red meat, full-fat dairy products, chocolate, baked goods, fried and processed foods: such a diet raises LDL;
• physical inactivity — lack of physical activity lowers HDL;
• smoking — lowers HDL (especially in women) and raises LDL;
• excess weight and obesity;
• chronic stress and excess alcohol: stress raises corticosteroids, and large doses of alcohol raise total cholesterol.

The first points and weight are modifiable factors; heredity and age are not, and this changes how the test is interpreted.

Heredity and diseases that raise cholesterol

High cholesterol can run in families. Familial hypercholesterolemia is singled out separately — a hereditary condition with very high levels from a young age. Other diseases also increase the risk: diabetes mellitus, chronic kidney disease, HIV, systemic lupus erythematosus. Some medications contribute — steroids, certain chemotherapy agents, drugs used after organ transplantation, medications for certain heart diseases and for acne. There are also population differences: people of South Asian and sub-Saharan African origin have a higher likelihood.

Beer, alcohol, and cholesterol: is there a link

There is a link: excessive alcohol consumption can raise total cholesterol. There are no separate data on beer; this concerns alcohol in general. The second mechanism is bile stasis in the liver with alcohol abuse, and the liver is involved in lipid metabolism.

Why cholesterol rises in women and with age

Levels rise with the years. At ages 20–39, the risk of high total cholesterol is higher in men. After menopause the picture changes: menopause lowers the level of female hormones that may protect against high cholesterol, and the risk in women increases. The likelihood is higher in people over 50, in men, in those who have gone through menopause, and in people of South Asian and sub-Saharan African origin.

How high cholesterol is detected and when to see a doctor

High cholesterol usually has no symptoms — it can only be detected by a blood test. Screening intervals: under 19 years, the first test at 9–11 years, then every 5 years (with a family history — from 2 years); at 20–65 years, for young adults — every 5 years, for men 45–65 and women 55–65 — every 1–2 years; after 65 — annually. The desired LDL is below 2.586 mmol/L, and with high cardiovascular risk — below 1.81 mmol/L; an LDL level above 4.138 mmol/L is considered by a doctor a reason to discuss lowering cholesterol. The result is taken to a family doctor or cardiologist: they assess the lipid panel together with the other risk factors.

High cholesterol on its own is not a reason to call an ambulance; 103/112 — if a heart attack or stroke is suspected. Pressing chest pain (angina) is a reason to seek medical help.

This material is for reference: it explains what makes cholesterol rise but does not replace a doctor's consultation — the interpretation of the numbers depends on the overall risk, which is assessed by a specialist.

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