Complex sentence: It was his theory that leprosy was caused by a diminution of the blood, and his treatment consisted of nourishing food, moderate exercise, frequent friction to the benumbed parts, special ointments and medical baths.
Split into simpler sentences: It was his theory that leprosy was caused by a diminution of the blood. His treatment consisted of nourishing food, moderate exercise, frequent friction to the benumbed parts, special ointments, and medical baths.