How to respond to people that say we're meant to eat meat and that is the way we have evolved?
The neanderthal were better adapted for a diet higher in protein, but not much, homo sapiens are starchivores, that is what we are! Its simply a lack of a quality education that you have to deal with people who don’t understand this difference.
There is a limit, considered to be 35–40%,
to the amount of energy requirements humans
can derive from proteins; above this
ceiling protein toxicity can occur, which can
cause death quite rapidly (Speth 2010). = not a carnivore
Modern humans require a reliable source of
glycemic carbohydrate to support the normal
functioning of our brain, kidney medulla, red
blood cells, and reproductive tissues. The brain
alone accounts for 20–25% of adult basal metabolic
expenditure (Fonseca-Azevedo and
Herculano-Houzel 2012). In addition to the
demands of the brain, red blood cells require
approximately 20 g glucose per day
directly from the bloodstream (Mulquiney et
You have taken on a colossal job of trying to reeducate someone in a single conversation.
Glucose is the main energy source for fetal
growth, and low glucose availability can compromise
fetal survival (Herrera 2000; Baumann
et al. 2002). During pregnancy a woman has a
minimal requirement for 70 –130 g/day of
preformed glucose or glucose equivalents to
maintain optimum cognitive function in the
mother and to nourish the fetus.
At peak lactation, mammary glands
require an additional 70 g glucose/day for
synthesis of lactose, the main sugar in milk
(Institute of Medicine 2006).
The rapid growth in hominin brain size
during the Middle Pleistocene will have required
an increased supply of preformed
glucose. Such increased demands can be
met through a range of biologically and culturally
driven dietary adaptations. Noting
that there is considerable overlap in date
estimates for the origins of controlled fire
use and the origins of AMY1 CNV, we hypothesize
a gene-culture coadaptation scenario
whereby cooking starch-rich plant
foods coevolved with increased salivary amylase
activity in the human lineage. Without
cooking, the consumption of starch-rich
plant foods is unlikely to have met the high
demands for preformed glucose noted in
So people who don’t get this and think they are Neanderthal… well maybe they are, they are surely headed for extinction!
We cooked starch therefore we became large brained world dominators. Those trying to restrict glucose are going to be small brained.
You can go into all the anatomical differences, but anyone arguing is probably not intelligent enough to grasp that they aren’t cats on their own, your help will not convince them. Maybe dare them to eat a can of cat food every day for a week to prove that they are carnivorous and you will eat a bowl of oatmeal to prove you are not.