The effects of cultured dairy and non-dairy products added to breakfast cereals on blood glucose control, satiation, satiety, and short-term food intake in young women
Kathleen Mather, Physiologie appliquée, nutrition et métabolisme 15 April 2020.
Breakfast cereals are often consumed with dairy products or non-dairy alternatives; however, the effect of the combination on blood glucose and food intake control is not well investigated. In a randomized, crossover study, 24 healthy women (age: 22.7±2.5y; BMI:22.1±1.5kg/m2) consumed, to satiation, one of three treatments: Greek yogurt with granola (150kcal, 9.2g protein, 2.6g fat, 2.0g dietary fibre, and 21.5g available carbohydrate/100g); cultured coconut product with granola (146kcal, 3.2g protein, 3.2g fat, 5.6g dietary fibre, and 21.9g available carbohydrate/100g); or water control. The data were analyzed with RM-ANOVA.
The 2h blood glucose iAUC was 52% lower after the dairy compared to non-dairy treatment (P<0.0001).
While there were no differences in food intake between the caloric treatments consumed to satiation, protein intake was three times higher and fibre intake was four times lower after the dairy compared to non-dairy treatment. Both caloric treatments resulted in similar suppression of ad libitum food intake at 2h (P<0.003) and subjective appetite over 2h (P<0.0001) compared to water. The cumulative food intake over 2h was lower after water (P<0.05). The 1.8-fold-increase in postprandial insulin after dairy compared to non-dairy treatment may explain the reduction in blood glucose without an increase in subsequent energy intake.
Novelty bullets
• Blood glucose in young females is lower after a breakfast with granola in a high-protein cultured dairy than when in a high-fibre non-dairy cultured product.
• Subjective appetite over 2h and food intake 2h later was similarly lower after both breakfasts but cumulative intake was higher compared to breakfast skipping.