Probably had liver parasites growing 30 years before final total inability to digest fats. (4 years after stomach went south, 20 years chemical sensitivity). See the Doc Sutter forum. 1. Kill parasites constantly 2. liver flush.
flush 1: 70 Gallstones (bile) = cause of pain 4 years
flush 2: gunk
flush 3: 3/4 cup of parasites!!!!!!!
If you want to really believe and get how this affects the digestion and the inability to clear bad bacteria and candida, read Andreas MoritzLiver Flushing book. General info at liverdoctor.com but she doesn't get into parasites.