Yes sample size is ridiculously small. Also, I couldn't find anywhere how they actually selected these individuals. i.e. it doesn't seem this was a random doubl

Yes sample size is ridiculously small. Also, I couldn't find anywhere how they actually selected these individuals. i.e. it doesn't seem this was a random double blind study Also the suggested causal association "unexpected effect of red meat" would need a lot more controls to figure out. There could easily be several confounding variables here.