You are very right,
But sadly it's a rare gem this guy you talked about.

We as a species got far off-road when it comes to health.
The layers of total bs theory in this field of research is huge.
(and it has to be that way from the enslaver perspective)

For one to be at ease with this study, one need first to be at ease with the idea of death, to then have a quiet mind to build a solid foundation of knowledge upon.

And as you know, in this fear base system, it is quiet rare to find someone at ease with this.