The theory was that, cancer people's mostly with very weak digestive system. By going mostly carnivore with fermented meat, the absorption of bio available nutrition are more easy to obtain.
Since hydration is also very important, he decide to take 5 to 6 liter of water. But if just clean water, it could be harmful as well. So take it in tea form will not lost body minerals. He also taken hydration salts. He does go very frequent toilet daily.
He walk 15K everyday, sleep 6 to 7 hours a day.
He has live with two part organ removed due to cancer surgery, but still live healthy above avarage.