Scientific justification for fat hate This study [Evolution and Human Behaviour, Volume 28, Issue 6, pp. 410–414] finds that aversion to fat people is a biological response stemming from human pathogen avoidance mechanisms. Although its perspective is clearly one of fat sympathy (its aim seems to be to fight 'stigmatisation of obese people'), it tells us everything we need to know. The authors claim that obesity is not a reliable indicator of the presence of infectious pathogens (after all, 'beetus is not, thank fuck, contagious), but they neglect one key fact: fat people tend to have terrible hygiene. Poor hygiene is, of course, a major risk factor for infectious disease. And so our revulsion at the sight of fats is simply a result of our evolutionary survival mechanisms functioning correctly. Fat hate is essential for the survival of our species.