We divided 119 obese according to BED or Bipolar Spectrum Disorder (BSD) comorbidity. We assessed altered eating behaviors and general psychopathology. Comorbidities were 41% BED-BSD, 21% BED and 8% BSD; only 29% had no comorbidity. The trend of symptoms severity was BED-BSD=BED>BSD>obese without comorbidity. Altered eating behaviors can be warning sign lights of comorbidities in obesity.