The conents are greatly informative.
It is obvious one should consume such intakes as per individual body chemistry requriment.
At the moment there is perhaps no system of knowing the body chemistry in totallity.This is again a function of time.
This is clear excess of any thing is always bad.
GURU NANAK JI sahib has clearly instructed...Everything to say about this...in Sri raag page 13 onwards...DONT CONSUME anything that harms your BODY !! period. Its up to us to find out what harms us and avoid it...