People react very differently to disgusting situations than to other daily life events, and it’s thought that this may have evolved as a way of protecting ourselves from parasites. But such hard-wired responses also have far-reaching effects on modern life. For example, this paper suggests that differences in disgust responses may influence one’s political affiliation and views on gay marriage. Be sure to read the caption for Fig. 1 (left). Gross!
Disgust sensitivity and the neurophysiolo