Emotions allow humans to interact with their environment and are an important adaptive force. A main emotion is disgust, which is under-treated in specialized literature. This contrasts with its potential function of serving as a health protector through the rejection of potentially offensive or destabilizing elements of the emotional-mental state of individuals. The present is an analysis of what is already known about disgust. To postulate a hypothesis of the mental health protection function of disgust.

Keywords : Emotions, Neurosciences of Emotions, Disgust, Primordial Disgust, Social Disgust.