My point still stands. not essential
In your moss-filled, utterly addled world perhaps. Even SN is not essential. You can jump off a cliff.
And, speaking as a former scientist with some of the most respected labs on this planet, may I ask, what formal authority or background you carry?
People like those behind PPEH and other such orgs walk a very fine line. Can't exactly write a "Idiot's guide to offing yourself".
All they can validly put out is about the most documented, average case information.
Can't exactly commission a lab or human subject study and determine a formula, can they?
They can only talk about the average case and certain obvious extrapolations like add 10g for over 100kg body weight.
The PPEH folks and their fellow travelers who put out such semi-rigorous material, all make the limitations of their methods clear in their prefatory statements.
Anything more needed, you got to figure it out on your own.
All you are repeatedly saying is "non-average cases" or "special cases" exist. What is the news in that?
But you seem to compulsively want to keep repeating that.
Which reveals more about you than about SN.
What good is that to the OP who started the thread to get some information, while already in a forlorn place wanting to go, and therefore had signed up on this site.