Overnight Effects of Lecithin on Postprandial Response and Satiety Following a Standardized Breakfast: A Study in Healthy Young Adults

Sammanfattning

With the rise of global obesity, which is linked to the development of cardiovascular disease and diabetes, dietary strategies for prevention have become a subject of interest. Previous studies at Lund University have demonstrated the potential of plant polar lipids as a functional food ingredient for improving the postprandial metabolic response as well as reducing the appetite for up to 6 hours. This thesis aims to investigate if these improvements remain after an overnight fast of 11 hours. A randomized single-blind crossover study involving 17 healthy young adults was conducted. The participants consumed three different bread rolls in the late evening: one containing lecithin, one containing sunflower oil and one without added lipids. They then consumed a standardized breakfast in the morning, and their blood glucose levels, insulin levels and subjective feelings of appetite were measured the following two hours. No significant differences were found in any of the tested variables, indicating that the positive effects were no longer present in this longer timeframe. These findings suggest that the improvements found from incorporating plant polar lipids into a carbohydrate meal subside sometime between the 6–11-hour period post-meal.