As he's done before, he swears by the often industry sponsored self-serving, non-research he finds on the internet!
I like this advice 'DO NOT FALL DOWN AND HIT YOUR HEAD. IF YOU FALL ALWAYS PROTECT YOUR HEAD.'...
...Not very different from 'AND DO AVOID CANCER OF ALL TYPES, CHEMO IS JUST NOT FUN'.
No matter what, some will keep buying snake oil, especially if there's a good deal available on the internet!