​ IBS does not cause lasting harm to the bowels; however, it can severely impair you physically and emotionally. In some cases, post-infectious IBS can develop into an autoimmunity. If IBS is left untreated, the patient has an increased (4x) risk of contracting food poisoning again. Further instances of food poisoning can significantly worsen your IBS symptoms. Understanding the root cause can help you and your doctor design a personalized treatment plan so that you can start feeling healthy as quickly as possible.