A foundation resource grounded in lived experience and clinical reality
Intestinal failure is not a phrase most people encounter until it suddenly defines their lives. For the adults who live with it, the words carry a precise and life-altering meaning.
Intestinal failure occurs when the gastrointestinal tract can no longer absorb enough nutrients, fluid, and electrolytes from food and drink to keep a person healthy and hydrated without intravenous supplementation.
The gut’s absorptive capacity has fallen below the threshold needed to sustain life and health through the digestive tract alone.
As a result, intravenous nutrition and/or fluids — most often delivered at home as home parenteral nutrition (HPN) — become necessary.
Absorption is no longer enough to maintain nutrition and hydration without intravenous supplementation. Usually means a central venous catheter, nightly or cyclic infusions, and a completely different daily rhythm of life.
Absorption is reduced, yet the person can still maintain nutrition and hydration with oral intake, dietary adjustments, oral rehydration solutions, and medications.
Adult IF almost always arises from one or more of these mechanisms:
Large or repeated removals of small intestine due to Crohn’s, trauma, volvulus, cancer, or other events that leave too little absorptive surface.
Repeated resections, extensive mucosal damage, strictures, or fistulas can lead to failure over time.
Sudden loss of blood flow forces emergency resection of large segments — a frequent cause of abrupt-onset failure in adults.
Can appear years after abdominal or pelvic radiation, producing strictures, fistulas, or chronic malabsorption.
Conditions such as chronic intestinal pseudo-obstruction leave the bowel present but unable to propel contents effectively.
Enterocutaneous or enteroatmospheric fistulas bypass large areas of absorptive surface, often after surgery or in Crohn’s/radiation.
Day-to-day life typically involves cyclic or overnight intravenous infusions of parenteral nutrition and/or fluids through a central line — Hickman, PICC, or port.
Many adults achieve meaningful work, relationships, and independence — yet the technology and routines of chronic intestinal failure remain a defining part of daily existence.
Most primary-care physicians and even many gastroenterologists will encounter only a handful of these patients — if any — in an entire career.
Because SBS is ultrarare, most physicians have limited hands-on experience with day-to-day nuances — fluctuating stoma output, line infection signs, fluid balance, long-term bone and kidney implications. Adults with SBS frequently become the most consistent experts in their own care.
The first conversation with another adult who also cycles HPN overnight, plans travel around supply deliveries, and knows the particular relationship with food often feels like oxygen. Peer connection becomes medicine of a different kind.
Organizations such as the Oley Foundation and the Short Bowel Syndrome Foundation sit at the center of this community. They provide education, peer connection, practical tools, and advocacy that formal medical societies cannot fully replicate. Their resources — and the lived expertise of the adults who use them — form the foundation for understanding what intestinal failure actually means in real adult lives.