Endometriosis Awareness Month & NICHD Research
In 2011, the NICHD-led Endometriosis: Natural History, Diagnosis, and Outcomes (ENDO) study found that 11 percent of a group of women with no symptoms of endometriosis actually had the disorder. If this finding is applied to all the women in the United States, the number of American women with endometriosis would well exceed previous estimates of 5 million.