"Because everyone needs to eat, the reasons for indulging in cravings vary among individuals and are difficult to pinpoint. However, for those with depression, food cravings can arise from causes such as:
Low serotonin levels. One of the chemical indicators of depression is a decrease in the body’s concentration of serotonin. Coincidentally, studies have suggested a correlation between low serotonin levels and cravings for sugary foods.
Positive associations. Food plays a significant role in many events throughout people’s lives, from birthdays to holidays to weddings. By partaking excessively in their favorite foods, depressed individuals may be subconsciously attempting to recreate those positive feelings.
Compensating for low energy. Whether due to lack of sleep or a general sense of malaise, depression disorder depletes energy. A natural reaction to feelings of lethargy is to eat more food to fuel a tired body."- Kelsey Andrews 2014