Food intake is essential for survival in all species for meeting energetic demands.
However, food intake also modulates various biochemical processes underlying cognition. Across two studies, we showed that different macronutrient compositions in standard European meals affect plasma neurotransmitter precursor levels, and these in turn influence social decision making.
Our results provide evidence that variations in the macronutrient content of a normal European meal exert a significant impact on high-level human cognition.
This study opens perspectives on nutrition-driven cognition modulation. The results have implications for education, economics, and public policy by emphasizing the importance of a balanced diet on fundamental expressions of cognition.