People with Crohn's disease have many challenges, particularly their dietary and nutritional needs. Some foods may aggravate symptoms, while other foods may not cause problems. Malnutrition is a concern with people with Crohn's disease. Foods that may aggravate symptoms include high fiber foods like popcorn, nuts, and vegetables, alcohol, milk and other dairy products, spicy foods, fatty foods, and fried foods. Often, a parenteral nutrition (TPN) or elemental diet may be recommended to reduce symptoms of Crohn's disease.