A strict vegetarian diet reduces brain volume. This is the conclusion reached by scientists at Oxford University. And if they had carefully read their own Darwinists, they would have known about it much earlier
It is known that vitamin B12 deficiency leads to anemia and damage to the central nervous system - irritability, memory impairment, inability to concentrate. And the magic "red vitamin" is contained only in meat, fish, liver, milk, cheese, eggs.
It is clear that strict vegetarianism, or veganism - vegans do not eat not only "products of murder", but also cruelly and unreasonably taken from chickens and cows eggs and milk - does not bode well for the brain. Yeast extracts, which many vegetarians enrich their diet with, and the industry fortifies food products, do not completely replenish the vitamin B12 deficiency.
For several years, doctors from Oxford have observed more than a hundred patients aged 16 to 87 - vegetarians and meat eaters. According to scientists, the differences are especially visible in the 61-87 age group. For five years, lovers of vegetables, fruits and nuts decreased brain activity and worsened memory, and CT scans showed a decrease in brain mass and volume compared to fans of bacon and fried eggs.
And by the way, 50 years ago the British anthropologists Mary and Lewis Leakey found our ancient Australopithecus ancestors in Africa. Subsequently it turned out that they were divided into two types - massive and graceful. The former adhered to an exclusively vegetarian diet and became more massive, and their brains - less and less. Eventually they became extinct. The latter turned out to be adherents of omnivorousness, and not only survived, but also let us live. Anthropologists came to the conclusion: plant food did not contribute to the development of the brain and caused extinction, directly justifying the saying "Great figure, but a fool."
It's embarrassing to somehow remind all this to the fellow tribesmen of the great Darwin and no less great Newton. Although an apple fell on the head of the latter, it did not tempt him to vegetarianism. Apparently, British thinkers of the past preferred good roast beef to apples. And you know who seduced the apple. We are still trying to disentangle the consequences of this spontaneous vegetarianism.