This guy developed a method of detecting which foods were allergic triggers for your body by measuring things. Apparently he was very successful at helping people with all kinds of problems - just by helping them decide which foods to avoid.

http://web.archive.org/web/20240526183119/https://soilandhealth.org/book/the-pulse-test/

Very nice you can read the whole book right there (I guess its out of copyright or I dont know if they would have it there)

Alot of stuff is so bad now!!