They say life Begins and Ends in the Colon. My father had a bad case of colitis and one Dr. Suggested cutting out the colon that was bleeding. Luckily the head Dr. Said that wasn't an option, but after cutting out all cola drinks, sugars and eating more raw diets did things change around and that was about 9 years ago but more recently he had thyroid cancer which had to be removed because it grew threw the windpipe as he had no choice to have surgery. Midwest people seem to have higher thyroid problems do to lack of Iodine in the system
But your brother does have some choices and some times and my dad had some colon polyps that went away by themselves after changing the diet around and this is what our family does as a whole.
1) Protein drink which includes whey protein from http://www.lifestar.com, rice bran complex from Lifestar mixed with 1-1/2tbsp flaxoil from barleans, 1 tbsp of Grapeseed Oil, 1tsp of Camu Camu, 1/8 cup Goji Berries,1/4tsp of green papays and other fruits mixed in a Tribest blender.
2) After noon Drink is Apple Juice with 1 tbsp of LifeForce from http://www.daystarbotanicals.com with Camu powder and 1tbsp of flaxoil. Please read http://www.chlorellafactor.com for info on this super food which is in high concentrations. I like Lifeforece and it has some very good plants/herbs. My wifes warts all went away after being on Lifeforce about 3 weeks! The person who runs Daystar Ted is also a PA and specializes in the GI. My uncle who also had bad colitis turned around after eating the green super foods.
3) The evening includes some Fruitful Harvest along with some other supplements along with other organic foods during the day also using the Water Cure method!!! Read http://www.watercure2.com
So yes there is other options and try to explore them and what ever he does keep up the Dr. Budwig diet! Check out http://www.cliffbeckwith.com