Comment author: saturn 10 April 2009 10:09:42PM *  3 points [-]

The thing is, it's both bullshit and strictly false. There's always some amount of food energy that goes in your mouth and comes straight out the other end, and this varies based on a host of poorly-understood factors.

Edit: I'm arguing against the extremely common assertion that energy eaten = energy expended + weight gain, which is what your original comment looked like. If you're talking strictly about fat cell behavior, you're right, but this is rather useless information for the purpose of weight loss. What SoullessAutomaton said was energy eaten >= energy expended + weight gain, which is indeed true.

Comment author: jonas 11 April 2009 04:37:19AM 1 point [-]

If you have diabetes mellitus you lose a lot of glucose in your urine. Certainly that simple case complicates the energy in energy out dogma.