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Question
Posted by: kala | 2008/01/07

Absorbtion of calories

How long does it take for the calories of the food you have consumed to be abrorbed into your body? Does it depend on what you eat? Does this process happen in your stomach only?

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Our expert says:
Expert ImageDietDoc

Dear Kala
Food that is eaten is subjected to a very complex digestion process that takes place throughout the digestive system. Absorption on some foods already takes place in the mouth and the final absorption occurs in the colon. It can take up to 12 hours for the digestion process to be completed. Factors that influence the speed of absorption include the composition of the food (fat, dietary fibre and protein contents), if the energy is in liquid or solid form (liquid energy is absorbed faster) and physiological factors such as the acid content of the stomach (people with a low stomach acid content have difficulties in absorbing certain nutrients).
Best regards
DietDoc

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