Understanding New Cholesterol Guidelines: Key Changes and How to Prevent Heart Disease

The American College of Cardiology and the American Heart Association have issued an updated guideline for managing lipids and cholesterol, emphasizing earlier intervention, expanded risk assessment, and updated treatment goals to reduce atherosclerotic cardiovascular disease risk.

The guideline, published on March 13, 2026, in JACC and Circulation, consolidates evidence-based recommendations for managing dyslipidemia into a single comprehensive document. It highlights that one in four U.S. Adults has elevated low-density lipoprotein cholesterol (LDL-C), increasing the risk of heart attack, and stroke.

A major focus of the updated guideline is earlier intervention through healthy lifestyle changes, including maintaining a healthy weight, engaging in regular physical activity, avoiding tobacco products, and prioritizing healthy sleep habits. Cholesterol-lowering medication is recommended when advised by a healthcare professional.

The guideline reinforces lower LDL-C goals and percent reduction based on risk to reduce lifetime exposure to unhealthy lipids and the risk of heart attack and stroke.

American College of Cardiology

New recommendations include selective use of coronary calcium scoring, lipoprotein(a) and apolipoprotein B testing, and guidance for managing lipids in specific populations. The document advises that every adult should be tested for lipoprotein(a) at least once in their lifetime, as high levels are often inherited and contribute to cardiovascular risk.

Lipoprotein(a) levels of 125 nmol/L or 50 mg/dL and above are considered high and should be combined with other health measures to assess heart disease or stroke risk and guide prevention or treatment decisions.

The guideline also emphasizes assessing a person’s family history of atherosclerosis, underlying medical conditions such as rheumatoid arthritis, and lifetime risks like early menopause or pregnancy complications including preeclampsia or gestational diabetes when evaluating cardiovascular risk.

Cholesterol screening is recommended for all children between the ages of 9 and 11 who have not been previously screened, particularly if there is a family history of high cholesterol, heart disease, or stroke, to help assess risk and guide care in collaboration with clinicians, parents, and caregivers.

For adults aged 19 and older, a cholesterol blood test panel including total cholesterol, HDL-cholesterol, LDL-cholesterol, and triglyceride levels is advised. The recommendations encourage understanding lifestyle changes that can lower cholesterol and creating habits that support heart health, such as managing blood pressure and diabetes, and getting 7–9 hours of restful sleep per day.

The update reflects a shift toward preventing long-term exposure to harmful lipids by initiating treatment earlier and using more personalized risk assessment tools, aiming to reduce the global burden of atherosclerotic cardiovascular disease, which remains the leading cause of death worldwide.