The authors of this study analyzed the nose and nostril shapes of 173 young white people. They studied the noses to find differences between male and female noses. Their goal was to make sure that during plastic surgery on the nose, men are not given noses that are too feminine.
The authors provide data on average differences between male and female noses that may be helpful to anyone preparing to get facial feminization surgery. Reading about the differences might cause dysphoria for some people.
It is interesting to note that there was no nostril type that was found only in males or only in females. In addition, the differences between the average measurements for males and for females is small. Noses do not fit into simple male and female categories.
The authors were not able to find all nose types that have been identified previously and they say this is a limitation to their data. Some of the subgroups of noses were smaller than others which might also limit their results.
The data was collected in Turkey and might not apply to populations in other countries. It is also limited by the fact that they only looked at white people.
Nasal Shapes and Related Differences in Nostril Forms: A Morphometric Analysis in Young Adults by Etöz, Betül Çam MD; Etöz, Abdullah MD; Ercan, Ilker PhD in Journal of Craniofacial Surgery Issue: Volume 19(5), September 2008, pp 1402-1408.