I dont have this theory perfected and mods may move to correct area.
The last few years ive been doing some hardcore plant growth research due to my sinfull hobby.
I ran across coconut water being used to promote size and growth,the stuff is amazing.the specialist dont go into detail and only say enzymes are in it.
What ive discovered is this stuff is like steroids.
This got me thinking about original islanders.
Then a friend from guam told me the orinal inhabitants of guam were seven feet tall before crossbreeding with spaniards and orientals.
This got me thinking about enzymes.all living things work dna by enzymes.some cancers are caused by enzyme inhibitors.
As we know coconuts are one of the biggest seeds on the planet.
My theory is feed coconut water to coconut trees,thus producing mutated coconuts with a proclivity towards a double genome.
Then feed these coconuts and water to a pregnant woman,after birth,continue to feed it to the child when possible.the double genome aspect would explain the giants double row of teeth.this would also explain their size.
As breeding continued the genetic makeup would make very large people.some maybe as big as the bible talks about.
My own experiments are pointing in this direction.
I suspect if there is a tree of life,enzymes will be the primary factor in this too.