Experts from the University of Cambridge in the UK said that the brain of early humans was larger than that of modern humans, and modern humans were 10% shorter than that of early humans. This study overturned the previous theory that modern humans became taller and stronger with evolution. Scientists said that this human evolutionary decline appeared in the past 10000 years or so, It is probably due to the emergence of agriculture. After the emergence of agricultural farming, human beings were limited by the reduction of food types and the spread of diseases
With the improvement of agriculture, there are far more kinds of food than ten thousand years ago
there was an evolutionary decline.