Diet Plan for IBS (Irritable Bowel Syndrome) It is gastrointestinal disorder which results in diarrhea, constipation, abdominal pain and bloating in severe cases, mucus is also found in stool. Intake of certain foods like dairy products, chocolate, citrus things or Alcohol can worsen the symptoms and may lead to severe constipation and diarrhea. Stress can also act as a major triggering factor in IBS. So, by managing our life style and Diet plans we can control the symptoms