a senior overweight man with the presence of large intestine spasms associated with irritable bowel syndrome, 3d

large bowel spasms irritable syndrome ibs gastrointestinal digestive system abdominal pain bloating constipation diarrhea discomfort movement intestinal disorder colon anatomy functional cramps gut motility 3d medical anatomical overweight man obesity health weight metabolism diet chronic digestion prevention treatment body composition bmi metabolic diabetes diversity fat illustration indian senior disease