Depression is a feeling of sadness that does not go away for two weeks or longer and begins to interfere with your ability to function day to day. One of the most common signs of depression is a change in how much you eat. For some people with depression, this means a loss of appetite, while for others, the amount you eat may increase. Loss of appetite can be an early sign of depression or a warning of a depression. On the other hand, some people can't stop eating when they are depressed... AND....Changes in your eating habits may be related to other symptoms of depression, such as fatigue and a lack of pleasure from activities. some people with depression lose both energy and interest in activities they enjoy... I hope this helps!