4 in 5 US Teens Fall Short on Teen Heart Health, CDC Survey Finds

Most American teenagers are not hitting the marks that define strong teen heart health, according to a new CDC survey released this week. The national survey found that 4 in 5 US teenagers fall short of high heart health scores, a finding that researchers say should serve as a wake-up call for families, schools and pediatricians. Those scores are based on a set of cardiovascular markers that include diet quality, physical activity, sleep duration, and other lifestyle measures linked to long-term heart outcomes.

What the CDC Survey Found About Teen Heart Health

The CDC teen survey assessed adolescents across the country using a composite scoring system that grades cardiovascular health from poor to high. According to reports, only about one in five teenagers reached the high tier, meaning the vast majority landed in the moderate or low range. Health experts say the adolescent cardiovascular health picture reflects broader shifts in teen diet and exercise patterns over the past decade.

The study's authors say the results were consistent across demographic groups, though some disparities emerged. Girls and older teens tended to score lower on certain measures, particularly physical activity and sleep. The findings on adolescent sleep health were especially striking: a large share of teens reported getting far less than the recommended hours of rest on school nights, a factor that weighs heavily on overall cardiovascular scores.

Diet, Activity and Sleep Drive Teen Heart Health Scores

Diet quality emerged as one of the weakest areas in the teen heart health assessment. According to reports, many adolescents consume diets heavy in sugary drinks, fast food and processed snacks, while falling short on fruits, vegetables and whole grains. Health experts say teen diet and exercise habits formed in adolescence often persist into adulthood, making the teenage years a critical window for prevention.

Physical activity levels also lagged. Federal guidance recommends that adolescents get at least an hour of moderate-to-vigorous activity each day, but the CDC teen survey suggests many teens are not close to that target. Screen time, long school days and fewer opportunities for unstructured play are among the factors experts cite. Better adolescent cardiovascular health, they say, starts with making movement a daily habit rather than an occasional one.

Why the Numbers Matter Now

Cardiovascular disease remains the leading cause of death in the United States, and its roots often begin in childhood. Health experts say that low teen heart health scores today can translate into higher rates of hypertension, obesity and type 2 diabetes in young adulthood. The adolescent cardiovascular health trends captured by the survey, they warn, could foreshadow heavier burdens on the healthcare system in the decades ahead.

The findings also arrive as public health agencies face tight budgets and shifting priorities. Pediatric groups say the data should strengthen the case for school-based nutrition programs, safe routes for walking and biking, and later school start times that support adolescent sleep health. Without intervention, they caution, the scores of today's teens could worsen further.

What Parents Can Do to Improve Teen Heart Health

Experts emphasize that improving teen heart health does not require drastic overhauls. Small, consistent changes — family meals with more vegetables, limits on sugary drinks, a daily walk or bike ride, and a firm bedtime — can move the needle on teen diet and exercise as well as rest. The CDC teen survey, they note, measures everyday behaviors, which means everyday choices are exactly what count.

Pediatricians also recommend talking with teens about the results rather than lecturing. Framing these results as a personal scorecard, experts say, can motivate adolescents to set their own goals. Schools can help by protecting recess and physical education time and by offering healthier cafeteria options. Together, these steps could help more teens reach the high tier of teen heart health that so few attain today.