I have never seen any scientific evidence for the idea of 'resetting' your immune system. Sounds like a load of baloney or pseudoscience to me. Eating a healthy and balanced diet though is a sound plan and could help you in numerous ways. To be honest your post sounds like a marketing or sales pitch if not yours then one that someone has 'sold' you on. I hope it's not. I'm sorry to hear about your health challenges. I hope your diet helps in some way.