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Chronic exposure to cortisol, commonly known as the stress hormone, has significant physiological and psychological effects that can influence eating behaviors. Binge eating disorder, characterized by episodes of consuming large amounts of food, is particularly linked to stress and emotional dysregulation. Elevated cortisol levels associated with chronic stress can lead to increased appetite and cravings, particularly for high-calorie, high-sugar foods. The disorder can thus develop as individuals use food as a mechanism to cope with stress or emotional distress largely driven by these elevated cortisol levels.

In contrast, the other disorders listed involve differing psychological mechanisms that may not be directly linked to cortisol in the same way. Bulimia involves a cycle of binge eating followed by purging, driven more by a complex interaction of cultural, emotional, and social factors. Body dysmorphic disorder revolves around an obsessive focus on perceived flaws in physical appearance and is less influenced by hormonal factors like cortisol. Anxiety disorders can certainly be exacerbated by stress and hormonal fluctuations, but the direct link between chronic cortisol exposure and binge eating is more clearly demonstrated in research relating to eating behaviors and stress management.