How does the human body absorb energy from food?

How does the human body absorb energy from food?Hey all.

We all learn about the digestive system from around grade 4, but even after having done senior biology at high school, we don't really cover exactly how the human body absorbs energy from food. I've read in a few articles that food actually doesn't contain energy. That is, you can't say this bowl of rice has 200 calories in it. Rather, the body generates 200 calories from it. I'm really not sure if thats true, but I'd really like to learn more about the whole process.

Thanks all.

Posted by Kat
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Know better? Leave your own answer in the comments! Facts and information on the human digestive system including how it works and related digestion health problems.

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