This. I think one of the most dangerous aspects of modern medicine (food planning included) is the way we misinterpret statistics in the public eye. For instance if a treatment is said to be 65% effective that doesn't mean that if you take it you will improve by almost 2/3. It means that 35% of the study participants did not have the positive results. Thus 35% of the broader population is not going to see those results.

Whether you are discussing diet or medicine or any other treatment, I think one of the best things our modern society could do would be to recognize the need for radically tailoring any kind of treatment for the individual.

This is difficult to do and thus not very profitable.