How does stress cause weight loss?

You will actually hear much more about stress causing
weight gain than about it causing weight loss, but stress can make some people lose
weight.

Typically, the connection between stress and weight
loss is psychological and not physical.  When some people are stressed they lose their
appetites.  You have probably heard the idea of being too depressed or nervous to eat,
right?  This would be an example of stress causing loss of appetite.  This, of course,
leads to weight loss.

There are cases in which there
actually is a physical connection between stress and weight loss, but the psychological
connection is much more common.