Crohn's disease is auto immune disease. According to ayurveda it can be considered Ama (undigested food which acts like toxic waste) which causes improper digestion person becomes weak and then deceases resistant power and pron to get cold cough and other diseases
Next Steps
Avoid taking spicy oily food, heavy food, reastaurant food , take healthy organic food. Ayurveda herbs like Ashwagandha bilva, Amla, Aloevera, Brahmi helps in inceasing resistant power there by controlling disease
Health Tips
Yoga postures like Vajrasana, Padmasana, Pavanamuktasana , Ardha /poorna matsendriyasana, gomukasana etc help in streanghtening digestive system. along with this practice pranayama and meditation