<p>Inflammatory bowel disease (IBD) is the term that includes Crohn's disease (which can affect any part of the gut) and ulcerative colitis (which affects the colon and rectum) ? two chronic auto-immune conditions that cause gut pain, weight loss, whole-body symptoms and poor digestion leading to nutritional deficiencies. Both are on the rise in the developed world and are newly affecting developing economies such as China (where the author was a...