First of all do a week of fasting and drinking 1 litre of empty water (Mikrosiewert as low as possible) with 20 grams of Ursalz every morning. This will help your colon to get rid of old stuff.... (recommended is additionally using Flohsamenschalen and other things to really help to scrape off old plaques !)
Then help your colon to rebuild a good and healthy microbiom. Stop eating meat. Preferably go vegan, 5 elements kitchen. This will help your whole body and soul.
There is somebody I can really recommend, who does this kind of cure.
The colon is said to be our second heart and brain. This is where our immune system sits....
it will help your whole body and soul.