Naked Science writes briefly about the work. It is believed that the brain in humans began to grow by eating meat and hunting. Scientists from Tel Aviv University and Minho University studied the diet of human ancestors in the Pleistocene era (it began 2,5 million years ago and ended 11,7 thousand years ago).

Researchers have paid attention to the acidity of the human stomach. The fact is that increased acidity indicates the consumption of animal products. Scientists came to the conclusion that the ancient people could eat the meat of one animal for several days and even weeks, and it naturally deteriorated. Adaptation to this caused an increase in the acidity of the stomach.

In addition, the scientists examined the genetics and structure of human fat cells. Here, too, there was evidence of a meat diet.

As a result, the researchers suggested that only from 85 thousand years ago in Africa and from about 40 thousand years in Europe and Asia, ancient people began to gradually introduce more plant foods into their diet.