Poor lipid metabolism may reduce cognitive performance in adolescents

A new Finnish study shows that blood markers of dysfunctional lipid metabolism are associated with poorer cognitive function in 15-17 year olds. The findings are important because brain development occurs rapidly during adolescence, and protecting it from an early age is important for lifelong brain health. Preventing lipid metabolism dysfunction from childhood may help not only with heart health, but also with healthy brain development.

The study, a collaboration between the Institute of Biomedicine at the University of Eastern Finland and the Preventive Health Research Unit at the South-Eastern Finland University of Applied Sciences (XAMK), examined the relationship between blood-based metabolic biomarkers and cognitive function in 251 adolescents aged 15-17.

The researchers found that higher blood concentrations of markers indicating lipid dysfunction, including total cholesterol, LDL cholesterol, VLDL cholesterol, triglycerides and saturated fatty acids, were associated with slower processing speed, meaning a reduced ability to rapidly process information during a cognitive task.

The study also found that higher serum concentrations of omega-3 and omega-6 fatty acids, as well as polyunsaturated fatty acids, were associated with poorer performance on tasks requiring faster processing speed. However, a more favorable ratio of omega-3 to total fatty acids, an indicator of better heart health, was associated with better working memory.

Heart health and brain health are linked since adolescence

The results support a connection between heart health and brain health that begins well before adulthood. Dysfunction of lipid metabolism may impair brain development even before overt cardiovascular disease emerges.

Adverse blood lipid profiles can affect cognitive function as early as adolescence. These results strengthen the evidence base for integrating heart disease prevention into comprehensive child and adolescent health policy – ​​what protects the heart also protects the developing brain.”

Eero Haapala, PhD, Senior Researcher at South-Eastern Finland University of Applied Sciences and Director of Research at the Institute of Biomedicine, University of Eastern Finland

The findings are based on the research project “The Cardiovascular Roots of Youth Brain Health,” Led by Dr. Haapala and funded by the Jenny and Antti Vihuri Foundation. The study yielded longitudinal data Physical activity and nutrition in children (PANIC) The study, led by Professor Timo Lakka at the Institute of Biomedicine, University of Eastern Finland.

The PANIC study is part of the Metabolic Diseases Research Community at the University of Eastern Finland. The research community is dedicated to investigating major cardiometabolic diseases. By leveraging genetics, genomics, translational research, and lifestyle interventions, the community aims to provide strong evidence on disease mechanisms and advance early diagnosis, prevention, and personalized treatment. The research community consists of 20 research groups, spanning from basic research to patient care.

The results were published pediatric researchAn international peer-reviewed journal in pediatrics.