Digestive system

[msminor]

Is there a direct relation between the amount you eat and how much comes out at the other end?

[incitatus]

Yes and no. If you eat a lot of fibrous food, ie fruit, vegetables, wholemeal bread, grains etc. then the volume of , um, end product will be linearly proportional. If you eat a lot of junk food or meat/protein/fat this tends not to form bulky end prducts. So you could pig out on steaks all day and still not produce a pan-filler.

[SMILL48]

There is an article on Answerbank answering your question - just click article 3261