Disgust is one of the primal emotions described by Darwin and strongly influences human motivation, behavior, and psychopathology. Disgust has sensory aspects, but when combined with certain cognitions it can take on moral implications. Although the biological source of disgust is protection from harmful substances, it can be manipulated to achieve political ends. Disgust combined with lust can sometimes lead to heightened sexual excitement. Disgust reactions may also be a defensive denial of our hidden desires. Psychotherapists must be careful to distinguish their own disgust reactions from the patient’s lovemap. In couples therapy, disgust reactions and mutual shaming processes can be clarified and restructured.