Dazzal yes I believe it too. And indeed learning how to go about it is what takes time and trial and error. I also use natural substances to help keep my body in good health.
What I have learned is that when our digestive system is in optimal health; our whole body is better in coping with say viruses such as the flu etc.
Our digestive system and intestines need to be in balance to be able to function at it's best.