Naked Science Forum

Life Sciences => Physiology & Medicine => Topic started by: paul.fr on 21/04/2007 19:06:25

Title: where does the fat go?
Post by: paul.fr on 21/04/2007 19:06:25

one of my sisters has recently losta lot of weight, but where did it all go?

Title: where does the fat go?
Post by: another_someone on 21/04/2007 20:43:03

There are only two thinsg that leave the body urine/sweat (the two are very similar) and CO₂.

Assuming we are talking aboy loss of fat (and there are other ways to lose weight too - like loss of muscle, or just reduced water retention), then the fact will primarily (but I suspect not exclusively) have been converted to water and CO₂.

Title: where does the fat go?
Post by: iko on 21/04/2007 21:03:11

Quote from: another_someone on 21/04/2007 20:43:03

There are only two things that leave the body urine/sweat (the two are very similar) and CO₂.

Assuming we are talking aboy loss of fat (and there are other ways to lose weight too - like loss of muscle, or just reduced water retention), then the fact will primarily (but I suspect not exclusively) have been converted to water and CO₂.

Ops! me think you forgot something smelly...stools!   [;D]
May be you meant that feces are just 'transformed' food.

ikod

Title: where does the fat go?
Post by: another_someone on 21/04/2007 21:25:51

Quote from: iko on 21/04/2007 21:03:11

Ops! me think you forgot something smelly...stools!   [;D]
May be you meant that feces are just 'transformed' food.

ikod

That was what I meant, although I am also aware that I am glibly ignoring bile, which is excreted into the the intestines, and ofcourse so too is water, but the rest is simply food that never entered or left the bloodstream.

Title: where does the fat go?
Post by: iko on 21/04/2007 21:35:41

Saliva, gastric and pancreatic juices plus bile make up 3-4 liters,
then most of the liquid is reabsorbed, in normal conditions, of course.

iko