Atherosclerosis
Arterial plaque buildup causing narrowed and hardened arteries.
TL;DR
The buildup of cholesterol-rich plaque inside artery walls — the underlying process behind most heart attacks and strokes. It is largely preventable and modifiable through LDL lowering, blood-pressure control, and not smoking.
Overview
Atherosclerosis is a chronic inflammatory disease of artery walls in which LDL particles penetrate the endothelium, become retained and oxidized, and trigger immune-cell recruitment that builds plaque over decades. The process begins in youth and stays silent for years; clinical events — heart attack, stroke, peripheral artery disease — occur when plaque ruptures and clots, or narrows flow critically. Risk is dominated by cumulative LDL exposure, hypertension, smoking, diabetes, and age. The condition is measurable (coronary calcium scoring, carotid ultrasound) and decisively modifiable: every sustained 1 mmol/L (39 mg/dL) LDL reduction lowers major cardiovascular events by roughly 20–25%, and benefit scales with how early and how long lowering is maintained.
Common Symptoms
- •Usually none for decades — atherosclerosis is silent until advanced
- •Angina or exertional breathlessness when coronary plaque limits flow
- •Leg pain when walking (claudication) in peripheral disease
- •Stroke or TIA symptoms from carotid/cerebral disease
- •Heart attack as first presentation in a substantial minority
Common Causes
- •Chronic elevation of apoB-containing lipoproteins (LDL and remnants) in the artery wall — the central cause
- •Hypertension
- •Smoking
- •Diabetes and insulin resistance
- •Chronic inflammation and chronic kidney disease
- •Genetic dyslipidemias: familial hypercholesterolemia, elevated lipoprotein(a)
Root Causes
The actionable root drivers are cumulative LDL exposure, smoking, hypertension, and diabetes. Because risk tracks lifetime LDL area-under-curve, early and sustained LDL lowering — diet first, statins and other agents when indicated — is the highest-leverage intervention in all of preventive medicine.
How It's Diagnosed
Diagnostic Markers
- Lipid panel: LDL-C, non-HDL-C, triglycerides; apoB where available
- Lipoprotein(a) once in a lifetime
- Coronary artery calcium (CAC) score to detect and stage subclinical disease
- Carotid ultrasound for plaque
- Blood pressure, HbA1c, and kidney function as risk co-drivers
- High-sensitivity CRP as a marker of residual inflammatory risk
When to See a Doctor
Atherosclerosis itself is silent — do not wait for symptoms. Seek risk assessment from age 40 (earlier with family history), and treat chest pain, transient neurological symptoms, or exertional leg pain as urgent signals of established disease.
Supplements Studied For This
Diet & Lifestyle
Suggested Pattern
Mediterranean-style eating has the strongest outcome data (PREDIMED): olive oil, nuts, fish, legumes, vegetables, whole grains. Portfolio-pattern additions (plant sterols, viscous fiber, soy, nuts) can lower LDL 10–15%. Reducing saturated fat, eliminating trans fat, and limiting refined carbohydrate remain foundational.
Eat more
- Extra-virgin olive oil and nuts
- Fatty fish twice weekly
- Legumes and viscous-fiber foods (oats, barley, beans)
- Abundant vegetables and whole fruit
- Plant-sterol-fortified foods if LDL is elevated
Avoid
- Trans fats (partially hydrogenated oils)
- Processed and fatty red meats
- Butter, coconut, and palm oils in quantity if LDL is high
- Sugary drinks and refined carbohydrates driving triglycerides
- Excess sodium and alcohol
Supporting Research
Intestinal microbiota metabolism of L-carnitine, a nutrient in red meat, promotes atherosclerosis
Clinical study on the effect of nattokinase on carotid artery atherosclerosis and hyperlipidaemia
Niacin for primary and secondary prevention of cardiovascular events
Menaquinone-7 supplementation improves arterial stiffness in healthy postmenopausal women: a double-blind randomised clinical trial
Vitamin K supplementation and vascular calcification in people with type 2 diabetes and chronic kidney disease: a randomized controlled trial
Frequently Asked Questions
Who It Affects
Atherosclerosis is near-ubiquitous with aging in industrialized populations; autopsy studies find early plaque in a large share of young adults. Cardiovascular disease remains the leading cause of death globally, responsible for roughly 1 in 5 US deaths.
Risk rises with age and cumulative risk-factor exposure. Men develop events earlier; women's risk accelerates after menopause. Familial hypercholesterolemia (~1 in 250) causes premature disease, and elevated lipoprotein(a) (~20% of people) adds inherited risk.
Quick Facts
- •Each 1 mmol/L (39 mg/dL) LDL reduction ≈ 20–25% fewer events
- •Silent for decades — first symptom can be a heart attack
- •CAC score of zero strongly predicts low near-term risk
- •Risk tracks lifetime LDL exposure: earlier lowering pays more
Lifestyle Tips
- •Know your numbers: LDL, blood pressure, HbA1c — and lipoprotein(a) once
- •Do not smoke; quitting reverses much excess risk within years
- •Exercise 150+ minutes weekly — raises HDL, lowers triglycerides and blood pressure
- •Take prescribed statins consistently; benefit compounds over years
- •Consider CAC scoring at intermediate risk to personalize intensity
Related Topics
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This information is for educational purposes only. Always consult a healthcare professional before starting any supplement regimen.