[joe_the_user]

If you eat less (below maintenance) and move more, you'll lose weight. That's just biological reality. I did that and have lost 15lbs in the past two months. Any psychological factors don't alter this basic fact.

Since when is psychology not part of biology?

Certainly, if you eat enough less and move enough more, you'll lose weight. I'm pretty sure there's a minimum threshold to this.

The problem with this is "eat less and move more" is just physics and not really a complete picture of your physiology. That is - you can be impelled somehow to eat less and move and if you go over threshold, you will lose weight. The problem is you may not reach a state which your body's internal calibration systems consider normal and thus you will wind-up gaining the weight back when the forces impelling you to eat less and move more go away. There's more to a craving for food than "psychology".

This is where the difficult biology of weight stands, as I understand it.

And personally, I'm always underweight no matter my food consumption so it's not hard to imagine other in the opposite situation. Each person's physiological system is different so a thousand antidotes don't prove a generality although they can certainly show the exceptions to the supposed "rule".

[dicktalens]

This is the absolute exact response that I would have given. I think I'm in love with you, joe_the_user. ;)