(October 11, 2018 at 4:55 am)Mathilda Wrote: The most thorough existing research finds intersex people to constitute an estimated 1.7% of the population*, which makes being intersex about as common as having red hair (1%-2%).
https://www.ncbi.nlm.nih.gov/pubmed/12476264
Quote:Abstract
Anne Fausto-Sterling s suggestion that the prevalence of intersex might be as high as 1.7% has attracted wide attention in both the scholarly press and the popular media. Many reviewers are not aware that this figure includes conditions which most clinicians do not recognize as intersex, such as Klinefelter syndrome, Turner syndrome, and late-onset adrenal hyperplasia. If the term intersex is to retain any meaning, the term should be restricted to those conditions in which chromosomal sex is inconsistent with phenotypic sex, or in which the phenotype is not classifiable as either male or female. Applying this more precise definition, the true prevalence of intersex is seen to be about 0.018%, almost 100 times lower than Fausto-Sterling s estimate of 1.7%.
