It appears that John is not promoting the Marshall protocol, but simply stating that Marshall may have initially been onto something.
Once Marshall posed the question of elevated 1.25 D levels, as far as John is concerned he totally went off base.
So, rather than discussing the Marshall Protocol, or referencing the writings of Amy and others, the question should pivot on what causes elevated 1.25 D levels, and if a person has elevated 1.25 D levels, does elevating 25 D levels help or hinder the healing process.
Perhaps we should take a moment and take a look at what 1.25 D levels mean.