Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Fat Metabolism
Name:  Sam
Location: N/A
Country: N/A
Date: N/A


Question:
When someone loses weight, where does the fat actually go? What happens to it?



Replies:
The fuel that your body runs on is called glucose. You get most of your glucose from carbohydrates. Ideally, you will only take in enough to use. If you take in more carbohydrates than you can break down you will store it as fat. If you begin to use more carbohydrates than you need to fuel your body, you have alternate pathways to break down fat which can be converted into glucose. So the fat is converted back into carbohydrate and used as fuel for your body.

Van Hoeck


Fat is the means through which your body stores energy in the form of large complex molecules. When you lose weight your body tapes into its energy stores (fat) and breaks down these molecules through metabolism. These molecules end up in all sorts of places, sometimes as amino acids, sometimes as other proteins, but most of the time they are broken apart and filtered through your metabolic process to produce energy.

Saundra Sample


In the body, fat is combined with oxygen to make carbon dioxide and water. Both of these products are excreted, mostly in the breath.

Richard Barrans Jr., Ph.D.



Click here to return to the Biology Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (help@newton.dep.anl.gov), or at Argonne's Educational Programs

NEWTON AND ASK A SCIENTIST
Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory