Early Cholesterol Testing Recommended in New Guidelines

New heart health recommendations emphasize earlier assessment and, when appropriate, treatment to lower cholesterol levels as a key strategy for reducing the risk of cardiovascular disease. A group of 11 medical associations, including the American College of Cardiology and the American Heart Association, released new guidelines on March 13 to facilitate doctors and their patients manage cholesterol. The recommendations advise considering initial cholesterol testing in childhood, around age 10, with the aim of helping patients maintain healthy levels and potentially reducing the chances of a heart attack or stroke decades later. The updated guidance also introduces a new cardiovascular risk calculator, PREVENT, designed to assess heart attack and stroke risk over the next 10 and 30 years in adults aged 30-79 who don’t already have heart disease.

A Shift Towards Proactive Assessment

The previous cholesterol guidelines, issued in 2018, relied on a risk calculator based on data from approximately 25,000 U.S. Adults participating in National Institutes of Health-sponsored studies. That calculator primarily focused on 10-year risk estimates. The new guidelines address a gap in previous recommendations by not having specific cholesterol benchmarks for individuals with varying levels of risk based on family or medical history. PREVENT, in contrast, is based on studies encompassing a much larger population – over 6.6 million people – allowing for more refined and individualized risk estimations, according to Roger Blumenthal, a cardiologist at Johns Hopkins School of Medicine, who chaired the guideline writing committee.

Beyond the new risk calculator, the guidelines also highlight the value of additional tests beyond the standard cholesterol (lipid) panel, including a one-time assessment of lipoprotein(a), or Lp(a). Lp(a) levels are largely determined by genetics and can contribute to long-term risk of heart attack or stroke.

Understanding the Numbers: LDL, Lp(a), and Risk Thresholds

Approximately one in four U.S. Adults has high levels of low-density lipoprotein (LDL) cholesterol, often referred to as “bad” cholesterol. Lowering these levels, through lifestyle changes like healthy eating and regular exercise, or with medication when recommended by a healthcare professional, can significantly reduce the risk of cardiovascular disease, the leading cause of death globally. The new guidelines suggest striving for LDL levels of 100 milligrams per deciliter or less for most adults, with lower targets of 70 mg/dL for individuals with some evidence of atherosclerotic disease or multiple risk factors, and even closer to 55 mg/dL for those at remarkably high risk.

A one-time measurement of Lp(a) can provide additional insight into risk assessment, even if other lipid levels appear normal. Elevated Lp(a) levels may indicate a potentially doubled risk compared to what the PREVENT score initially estimates.

PREVENT: Estimating Short- and Long-Term Risk

The PREVENT calculator is designed to provide a more comprehensive assessment of cardiovascular risk by estimating the likelihood of events over both 10 and 30 years. This is particularly important because many young adults in their 30s and 40s may have a low 10-year risk due to their age, but their 30-year risk could be substantially higher if they don’t adopt healthier lifestyle habits. The calculator can help illustrate this potential long-term impact, motivating individuals to produce proactive changes.

Who Benefits from Early Screening?

The guidelines recommend that clinicians consider screening with a lipid panel around age 10 and again around age 20, and then every five years thereafter, especially if there is a family history of heart disease or other cardiovascular risk factors. For individuals aged 30 and older with persistently high LDL cholesterol (160 mg/dL or higher), consideration should be given to starting cholesterol-lowering medication, particularly if they have a family history of heart disease or other risk factors.

Guideline Updates and the Broader Context

These updated guidelines follow a similar approach to recent updates from the American Heart Association and American College of Cardiology regarding blood pressure management. The principle is to proactively address risk factors, and if lifestyle improvements aren’t sufficient, to consider medication to achieve target levels. The emphasis on early intervention reflects a growing understanding of the importance of preventing cardiovascular disease throughout the lifespan, starting in childhood and adolescence.

What’s Next: Implementation and Ongoing Research

The release of these guidelines is just the first step. The next phase involves disseminating the information to healthcare professionals and integrating the PREVENT calculator into clinical practice. Ongoing research will continue to refine risk assessment tools and evaluate the effectiveness of different treatment strategies. The American College of Cardiology and the American Heart Association will likely monitor the implementation of these guidelines and update them as new evidence emerges. Further studies are also needed to better understand the optimal management of lipoprotein(a) and its role in cardiovascular risk.

For more information, consult official resources from the American College of Cardiology and the American Heart Association.