Complex sentence: Nutritional problems that result from Chron's are due to inflammation of the small intenstine that cause diarrhea and lead to malabsorption of important nutrients in the small intestine, causing malnutrition, fever, fatigue, and weight loss.
Split into simpler sentences: Nutritional problems that result from Chron's are due to inflammation of the small intenstine that cause diarrhea. This leads to malabsorption of important nutrients in the small intestine, causing malnutrition, fever, fatigue, and weight loss.