Cardiovascular risk factors that emerge in childhood and adolescence may have lasting consequences for brain health, with new research indicating that higher body weight, unhealthy cholesterol levels and elevated blood pressure early in life are associated with poorer cognitive performance in young adulthood. The study, published online on January 15 in the journal Pediatrics, adds to growing evidence that heart health and brain health are closely intertwined from an early age.

The research was led by Dr Henri Salo of the University of Turku in Finland and drew on data from the long-running Special Turku Coronary Risk Factor Intervention Project. Researchers followed participants from infancy through adolescence and assessed their cognitive function at the age of 26 years. Cognitive testing focused on learning and memory, verbal memory, working memory, reaction time, information processing speed and cognitive flexibility, allowing the team to evaluate how early cardiovascular health influenced later brain function.

The findings showed that higher body mass index and waist circumference during childhood and early adolescence were consistently linked to poorer cognitive flexibility in adulthood. Similar associations were observed for information processing speed, suggesting that excess weight in early life may affect how efficiently the brain processes information years later. These associations remained evident even when the increases in body weight were relatively modest.

Cholesterol levels during adolescence were also found to play an important role. Higher levels of low-density lipoprotein cholesterol in early adolescence and adolescence were associated with poorer verbal memory in young adulthood. In contrast, lower levels of high-density lipoprotein cholesterol during childhood and adolescence were linked to reduced cognitive flexibility, highlighting the importance of maintaining a healthy lipid profile from a young age.

Blood pressure emerged as another key factor, with higher systolic blood pressure in childhood associated with poorer cognitive flexibility later in life. Together, these findings suggest that multiple cardiovascular risk factors may act cumulatively to influence brain development and long-term cognitive outcomes.

The authors noted that even slightly elevated cardiovascular risk factors could have meaningful effects on cognitive function in adulthood. They argued that the results support a more proactive approach to cardiovascular risk management beginning in childhood, not only to prevent heart disease later in life but also to protect cognitive health.

Experts say the study reinforces the idea that the foundations of adult brain health are laid early. While individual effects may appear small, the population-level impact could be substantial, particularly in the context of rising childhood obesity and metabolic risk worldwide. The findings underscore the importance of early lifestyle interventions, including healthy diet, regular physical activity and routine monitoring of cardiovascular health, as part of a broader strategy to support lifelong cognitive well-being.