New Cholesterol Guidelines Call for Earlier Action to Prevent Heart Disease

Updated national guidelines from the American College of Cardiology (ACC) and the American Heart Association (AHA) urge doctors and patients to act earlier to control unhealthy cholesterol levels, a major cause of heart attacks and strokes. The updated recommendations, released in March 2026, emphasize identifying risk sooner and treating elevated cholesterol earlier in life to reduce long-term damage to the arteries.

Earlier Prevention is the Central Message

A major theme of the new guidelines is earlier intervention to limit lifetime exposure to harmful cholesterol levels. Research shows that the longer LDL cholesterol remains elevated, the greater the chance of developing heart disease later in life. That means prevention should start sooner—sometimes decades before symptoms appear. Doctors are encouraged to evaluate risk earlier and consider treatment earlier if lifestyle changes alone do not lower cholesterol enough.

Healthy habits remain the first line of defense. Maintaining a healthy weight, exercising regularly, avoiding tobacco, getting adequate sleep and eating a heart-healthy diet all help improve cholesterol levels. Although, if cholesterol remains elevated, experts now recommend considering medication sooner than in the past. Statins—drugs that reduce cholesterol production in the liver—remain the most common and effective treatment.

The guidelines too note that high cholesterol can begin to influence heart disease risk even in childhood and adolescence. Children may have high cholesterol due to inherited conditions or lifestyle habits. “Cholesterol screening is recommended for all children between the ages of 9-11 years not previously screened to help assess risk and guide care, in collaboration with clinicians, parents and caregivers,” according to the ACC.

New Cholesterol Targets

The guidelines also reinforce lower LDL cholesterol targets to reduce long-term risk. For people at borderline or intermediate risk of heart disease, the recommended LDL level is below 100 milligrams per deciliter (mg/dL). For individuals at high risk, the goal is below 70 mg/dL. People who already have cardiovascular disease may benefit from lowering LDL even further, to below 55 mg/dL. Experts say keeping LDL cholesterol lower for longer provides significantly greater protection against future heart attacks and strokes.

A New Tool to Estimate Heart Risk

Doctors will also utilize an updated risk calculator called PREVENT, designed to estimate a person’s likelihood of having a heart attack or stroke within the next 10 or 30 years. The tool uses information typically collected during routine checkups, including cholesterol levels, blood pressure, age and lifestyle habits. It categorizes people into four risk groups:

• Low risk: less than 3 percent chance of a heart attack or stroke within 10 years
• Borderline risk: 3 percent to under 5 percent
• Intermediate risk: 5 percent to under 10 percent
• High risk: 10 percent or greater

These categories help clinicians decide whether cholesterol-lowering medications should begin and how aggressive treatment should be.

Additional Tests Can Personalize Care

The guidelines also highlight tests that may help refine a person’s risk. A coronary artery calcium (CAC) scan is a specialized CT scan that detects calcium deposits in the heart’s arteries—an early sign of plaque buildup. Finding calcium in the arteries may support starting treatment sooner. Doctors may also measure lipoprotein(a), often called Lp(a), a cholesterol-related particle largely determined by genetics. Elevated Lp(a) significantly increases long-term risk of heart attack or stroke. Another test, apolipoprotein B, measures the number of cholesterol-carrying particles in the blood and may help identify hidden risk in people with diabetes or high triglycerides.

The Importance of Lifestyle Changes

A recent study suggests that finishing your last meal at least three hours before bedtime could lead to significant heart and metabolic health benefits. Published in the journal Arteriosclerosis, Thrombosis, and Vascular Biology, this research highlights a simple lifestyle change that may improve how our bodies function overnight. Researchers found that extending the nightly fast to between 13 and 16 hours, with the last meal consumed at least three hours before bedtime, led to improvements in nighttime blood pressure, heart rate, heart rate variability, cortisol levels, and glucose regulation.

Sleep and Family Health

A new national survey suggests that sleep problems among children are more common than many parents realize—and the effects can ripple through the entire household. According to the 2026 Sleep in America Poll from the National Sleep Foundation, about 44 percent of children in the United States do not consistently get the recommended amount of sleep for their age. Experts recommend the following sleep durations:

• Infants (4–12 months): 12–16 hours per day, including naps.
• Toddlers (1–2 years): 11–14 hours.
• Preschoolers (3–5 years): 10–13 hours daily.
• School-age children (6–12 years): 9–12 hours per night.
• Teenagers (13–18 years): 8–10 hours.

Families can support better sleep by getting morning light exposure, encouraging daily physical activity, avoiding caffeine after noon, eating dinner earlier, creating a bedtime routine, keeping consistent sleep schedules, limiting screens before bed, and optimizing the bedroom environment.