Crohn's disease and ulcerative colitis can make it hard to get enough nutrients from your diet. These inflammatory conditions can affect your appetite, bathroom habits, and your body's ability to absorb vitamins and minerals. Common issues include malnutrition, malabsorption, and anemia. Preventive measures include getting enough vitamins and minerals, avoiding foods that trigger symptoms, and using supplements or liquid nutrition if needed. Treatment options include medication, nutritional supplements, and in severe cases, feeding tubes.