Our expert says:
Because more blood is routed to the digestive system after eating to assist with the absorption of nutrients, some people do tend to feel faint after eating meals. However, the meal you describe is so low in energy (despite the fact that the yoghurt is low-GI), that it probably does not increase your blood sugar levels sufficiently to sustain normal activity. Let's say this is your lunch which you are eating 5 hours after your last meal (breakfast), as such it should provide at least 2100 kJ (if you are trying to lose weight and 2800 kJ if you are not trying to lose weight), to maintain your blood sugar levels so that you can continue with your daily activities (including brain activity). Your meal contains approx. 650 kJ which is far too few kJ to keep you going. Please try increasing your energy intake with low-GI foods (low-GI bread, tuna, lean meat, boiled eggs, baked beans or other legumes, apples, pears, etc) at each meal for 2-3 weeks. If you still experience these feelings of exhaustion after eating, then please consult your gp and ask him/her to arrange a glucose tolerance test to determine if you suffer from hypoglycaemic or insulin problems.
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