Symptoms of some mental health disorders, and their associated medications, can lead to weight gain.
Obesity and mental health are deeply entwined. Some mental health disorders can have symptoms such as lethargy, decreased sleep, excessive sleep, and increased appetite, which can lead to weight gain. Some treatments for mental health disorders (e.g. antidepressant and antipsychotic medication) have been associated with moderate to significant weight gain. Research has observed that individuals who have genes that are associated with having a high BMI are at a greater risk of having depression. Experiencing weight stigma can also increase risk for mental health disorders (e.g. anxiety and depression).