Interesting reading to be sure. Chemistry, like math is absolute given known variables. Chemistry, with a little biology mixed in is another animal. Then throw in some physics and who knows what else, oh boy. This man is speaking from HIS life experience and knowledge which also could be flawed.
I DO think that there are unexplained things in our world that have to do with "life" force, light energy, thought, etc.
In addition, I also believe in the placebo effect, however, believe this to be more "directed" thought. In other words someone or something is telling you that this will make you well. In good faith and trust you believe them and it does. The item, herb, food, drink, or pharma pill may have been bogus, but the thought that it would work was REAL.