Risk factors include a family history of<unk>  colitis, or Jewish ancestry. It may affect any age group, although there are peaks at ages 15 - 30 and then again at ages 50 - 70. It affects men and women equally and appears to run in families, with reports of up to 20 percent of people with<unk>  colitis having a family member or relative with<unk>  colitis or Crohn's disease. A higher incidence of<unk>  colitis is seen in Whites and people of Jewish descent.
Ulcerative colitis risk factors
Stomatitis risk factors
Crohn's disease risk factors
Irritable bowel syndrome risk factors
Ischemic colitis risk factors
Chronic diarrhea risk factors
Campylobacteriosis risk factors
Mesenteric ischemia risk factors