Mental health today includes much more than the treatment of psychiatric disorders. More and more interventions aim to bring mental health support closer to people and psychotherapeutic interventions to people with somatic conditions. Since the treatment of people with metabolic syndrome and diabetes mellitus type 2 also requires a change in lifestyle, mental health has a prominent role. This overview paper wants to offer a solution after recognizing the given patterns where psychotherapy certainly has a significant and irreplaceable role. Precisely because of this phenomenon, psychological eating patterns associated with diabetes mellitus and hence metabolic syndrome should be studied, and attempts should be made to uncover patterns in occurrence. The aim of this study is to review the literature and consider the connection among diabetes mellitus, metabolic syndrome, and psychological eating patterns such as emotional and compulsive eating, as well as through the lens of food addiction. Furthermore, we have attempted to uncover the role of psychiatry and psychotherapy in the treatment of diabetes mellitus and metabolic syndrome and delve into the complexity of recognizing these patterns and emphasize the importance of a multidisciplinary approach in the treatment of diabetes mellitus and metabolic syndrome.