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Fruit, fructose and blood glucose
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<blockquote data-quote="Brunneria" data-source="post: 2279345" data-attributes="member: 41816"><p>Something else to bear in mind when eating fruit is that it isn’t digested in the stomach. It passes through the stomach unchanged and then gets digested in the small intestine.</p><p></p><p>obviously, the detailed process is complex and requires a degree (which I do not have!) to describe properly, but this is basically how it goes:</p><p></p><p>- I eat fruit by itself. My stomach says ‘oh, no protein here, I will just quickly shunt this along to the small intestine, where it will get digested and absorbed. This causes a rapid rise of blood glucose.</p><p></p><p>or</p><p></p><p>- I eat fruit at the end of a full meal including protein and fats, along with some complex carbs. Say, roast chicken, green beans, cauliflower cheese, peas, followed by fruit in cream. My stomach says ‘yum! Let me go to town digesting this lovely chicken using acid, which will take 1-3 hours. Then I will slowly release it, and the veg and fat and fruit and fibre from the veg, into the small intestine, where they will slowly be digested using bile from the bile duct (which is alkaline, and has to first neutralise the stomach acid, then alkalise all the food) to deal with the fat. All sorts of other enzymes and ‘stuff’ are <strong><em>also</em></strong> needed to deal with all those foods. This takes a while, and the fibre slows things down a bit more. At that point, the carbs (incl fruit sugars) will start to hit the bloodstream, but much more slowly than if the fruit had been on its own.</p><p></p><p>so eating fruit with fat and protein and fibre slows down digestion => slower sugar release.</p><p></p><p>(But with the slight downside that you are far more likely to see indigestion and flatulence from a mixed meal than a simple meal of just fruit, or just meat, because of all the different, sometimes conflicting, processes involved)</p><p></p><p>no wonder people often report less indigestion when they stop eating large mixed meals of carbs, proteins, fats and fibres.</p></blockquote><p></p>
[QUOTE="Brunneria, post: 2279345, member: 41816"] Something else to bear in mind when eating fruit is that it isn’t digested in the stomach. It passes through the stomach unchanged and then gets digested in the small intestine. obviously, the detailed process is complex and requires a degree (which I do not have!) to describe properly, but this is basically how it goes: - I eat fruit by itself. My stomach says ‘oh, no protein here, I will just quickly shunt this along to the small intestine, where it will get digested and absorbed. This causes a rapid rise of blood glucose. or - I eat fruit at the end of a full meal including protein and fats, along with some complex carbs. Say, roast chicken, green beans, cauliflower cheese, peas, followed by fruit in cream. My stomach says ‘yum! Let me go to town digesting this lovely chicken using acid, which will take 1-3 hours. Then I will slowly release it, and the veg and fat and fruit and fibre from the veg, into the small intestine, where they will slowly be digested using bile from the bile duct (which is alkaline, and has to first neutralise the stomach acid, then alkalise all the food) to deal with the fat. All sorts of other enzymes and ‘stuff’ are [B][I]also[/I][/B] needed to deal with all those foods. This takes a while, and the fibre slows things down a bit more. At that point, the carbs (incl fruit sugars) will start to hit the bloodstream, but much more slowly than if the fruit had been on its own. so eating fruit with fat and protein and fibre slows down digestion => slower sugar release. (But with the slight downside that you are far more likely to see indigestion and flatulence from a mixed meal than a simple meal of just fruit, or just meat, because of all the different, sometimes conflicting, processes involved) no wonder people often report less indigestion when they stop eating large mixed meals of carbs, proteins, fats and fibres. [/QUOTE]
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