Here are five key notes:
1. Celiac disease was most common among Americans from the Punjab region of India.
2. South Indian, East Asian and Hispanic ancestry were least likely to have celiac disease.
3. The rate of celiac disease among Jewish and Middle Eastern ethnicities were similar to celiac rates among the general American population.
4. Both men and women have similar celiac disease rates when tested regardless of ethnicity.
5. Celiac was previously thought to affect Caucasian Europeans predominantly.
There were more than 400,000 intestinal biopsies examined from a nationwide database for the study.
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