Yes I have read about him before. Quite interesting.

The same type thing is going on now on a lot larger scale with a lot of N=1 experiments. It has been named carnivore and there are several doctors and influencers that promote it. They are finding that people with specific problems can sometimes cure their health problems by going to an all meat or nearly all meat diet. The Petersons, Mikhaila and Jordan, are the most famous.