Dietary protein, carbohydrate, and fat enhance memory performance in the healthy elderly.

摘要: Background: Dietary carbohydrates can improve memory. Whether these effects are related to elevations in blood glucose or energy ingestion is unknown. Objectives: Our objectives were determine 1) the influence of isoenergetic protein-, carbohydrate-, and fat-containing drinks on cognitive performance 2) whether time period after affects cognition. Design: After fasting overnight, 11 men women aged 61-79 y consumed either a 300-mL drink containing 774 kJ as pure protein (whey), carbohydrate (glucose), fat (safflower oil) nonenergy placebo 4 separate mornings. Cognitive tests administered 15 60 min drinks. Plasma serum insulin concentrations measured. Results: Only increased (P -0.41, P < 0.03), tended attention at 0.05), reduced rate forgetting PR = 0.002). Conclusions: Energy intake from protein, carbohydrate, enhance memory independently glucose. Each macronutrient may also exert unique