Polyarmour said:
I don't doubt that meat was needed to supplement a lack of calories available from vegetables and fruit in certain environments. My dispute was that eating this meat somehow gave mankind a boost that was essential to his evolution. For example I have heard it said that eating meat was essential to the evolution of the brain from monkey to human. Yet today we have some very smart people being produced from vegetarian diets. Clearly Ghandi's brain was quite happy with vegetarian food too.
Quotation "Australopithecines like Lucy grew brains to our current size because meat let our digestive systems shrink, freeing up energy for a bigger brain. In fact, our brains are twice as large as they should be for a primate our size … and our digestive system is 60 percent smaller.
Consider gorillas. They are vegetarians and have the smallest brains and largest digestive systems of any primate. The exact opposite of humans. It’s our large brains that need the energy that only meat and a small digestive system can provide."
Scientists explore Chimps and Gorrilas lifes side by side. Chimps are ours closest relatives and they are omnivores like humans.
Some recent evidence show us that even Australopithecines were meat eaters, were using stone tools to cleave meat off animal bones as far back as 3.2-3.5 million years ago.1, and not by spear and bow invention.
We start eating meat not only by hunting big animals. Some worms, insects, small funny things etc. were very popular among cyclists these days.
Of course fire and weapons push it even further, by some scientists we have only one big difference beetwen us and dogs, and that is site of our canines, which many believe shrank after we started using fire and tools.
Quoatation: Herbivores also have a variety of specialized digestive organs capable of breaking down cellulose, the main component of plant tissue. Humans find cellulose totally indigestible, and even plant eaters have to take their time with it. If you were a ruminant (cud eater), for instance, you might have a stomach with four compartments, enabling you to cough up last night's alfalfa and chew on it all over again.
Quoatation:Good thing, too. I won't claim meat is the ideal source of protein, but on the whole it's better than plants. Sure, soybeans and other products of modern agriculture are pretty nutritious. But in the wild, much of the plant menu consists of leaves and stems, which are low in food value. True herbivores have to spend much of the day scrounging for snacks just to keep their strength up.
So i beleive based on what i read, that we are omnivores from our start, and plants and other food have important role in our development or no development. Necesstity and not health is prime reason for that.
Stay well!