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The science of nutrition and healthy eating
The science of nutrition and healthy eating

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1.3 Move along in there, please

To investigate certain medical conditions, tiny cameras have been developed that can be swallowed to send back pictures from inside the gut (the lower half of the digestive system).

Movements of the gut push the camera, in the same way that they would push food through the digestive system. In the next video you can see the route that a camera, and therefore food, would take.

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The length of time that it takes food to travel from mouth to anus depends largely on the components of the diet, particularly the amount of fibre. Fibre bulks out the contents of the gut, giving more for the intestines to squeeze on to move the food along. A typical time is 24 hours but it can be up to three days.