Men find thinner women attractive because they associate their body shape with youth, fertility and a lower risk of disease.
This is according to a new study by the University of Aberdeen which found 'evolutionary fitness' determines what men find appealing. This contradicts earlier theories which suggest people are drawn to body types with more fat as they could historically survive a famine. Professor John Speakman, who co-ordinated the study, said that in evolutionary terms fitness was made up of two things: survival and the ability to reproduce.
The reason for the discrepancy was revealed when subjects were asked how old they thought the people in the images were. They judged that the fatter people were older. Age is itself a strong indicator of evolutionary fitness. This suggests that we find thinness in females so attractive because we equate it with youth and minimal risk of future disease. This was to be consistent across European, African and Asian test groups.