He should make sure he is not constipated.
If constipated, he should consume 3-4 apples a day, start a day with 2 apples, one around 3pm and one around 6pm.
He should practice ketogenic diet or paleo diet.
Therapies recommended:
- FMT
- Liver Flush
- sun exposure to get vitamin d3, but not too much to burn skin
This is to begin with.
Other therapies to research:
- vegetable juicing
- coffee enema