Heart & Circulation — Guides

Cardiovascular health: blood pressure, cholesterol, arrhythmias, angina, and cardiac rehab.

• New 2025 High Blood Pressure Guideline: Prevention, Early Treatment, and Brain Health — The 2025 AHA/ACC guideline emphasizes prevention, early treatment, pregnancy care, and brain health in managing high blood pressure.
• Angina — Symptoms & Management — How to recognize angina, what causes it, when to seek care, and treatment options.
• Aspirin vs Clopidogrel — Which Is Better for Heart Disease? — How aspirin and clopidogrel compare for preventing heart attacks and strokes, including safety, side effects, and latest evidence.
• Blood Oxygen Levels and Pulse Oximeters — What SpO₂ numbers mean, how to measure them accurately at home, and when to seek care.
• Blood Pressure at Home: How to Measure Correctly — A step-by-step guide to checking your blood pressure at home, what the numbers mean, and when to seek medical advice.
• Chest Pain Symptoms — When to Call 911 — Learn when chest pain is an emergency, common causes, and what tests doctors may use to find the cause.
• Chest Pain: When to Call 911 vs Wait for a Doctor — Chest pain can be harmless or life-threatening. Learn red flags, common causes, and when urgent help is needed.
• Coronary Angiography — What to Expect — Why coronary angiography is done, how the procedure works, risks, recovery, and follow-up.
• Early Warning Signs of a Heart Attack — Subtle symptoms that can appear hours or days before a heart attack, and what to do.
• Heart & Circulation Overview — Introduction to cardiovascular health: risk factors, common conditions, and prevention strategies.
• Heart Attacks in Younger Adults: Hidden Causes (Especially in Women) — In adults ≤65—especially women—many heart attacks stem from causes beyond plaque blockage, including SCAD, embolism, spasm, and supply–demand mismatch.
• Heart & Circulation — Guide Hub — Guides on common heart conditions, treatments, medications, and prevention — from angiography to atrial fibrillation and cardiac rehab.
• Heart Palpitations: When to Worry — A guide to understanding heart palpitations — common causes, when to seek help, and what tests may be done.
• Metabolic Syndrome — A cluster of risk factors that together increase the chance of heart disease, stroke, and type 2 diabetes.
• Obesity Basics — An overview of obesity: what it is, why it matters, and how it affects health.
• Preventing Heart Disease: Lifestyle and Medical Screening — Steps to reduce your risk of heart disease — diet, exercise, risk factor control, and the role of regular screening.
• Understanding Coronary Angiography — What coronary angiography is, when it's used, and what to expect before, during, and after the procedure.
• Waist-to-Hip Ratio (WHR) — How to measure your waist-to-hip ratio and why it’s a better predictor of health risks than BMI.