Human Brains Continue to Shrink

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The brain of modern humans is 12.7 percent smaller than that of their ancestors 100,000 years ago. But the shrinkage is not yet known.

Please note that this article was automatically translated using Microsoft Azure AI, Open AI, and Google Translation AI. We cannot ensure that the entire content is translated accurately. If you spot any errors or inconsistencies, contact us atBig brains are what differentiate humans from other species. Big brains make humans able to think and give birth to innovations that allow humans to cook, invent the wheel, and land on the Moon. However, the brains of today's modern humans are 12.

This means that people at that time began to think more abstractly to understand their surroundings. With that ability, people began to create symbolic artifacts and carve geometric images with meaning.A shift in thinking style is triggered by the discovery of spontaneous language which forces the brain to reorganize existing neural pathways in order to make its metabolic process more efficient. With a smaller and better-organized brain, humans are able to perform more complex calculations.

“The warmer the climate, the smaller the size of the human brain. And conversely, the colder the climate, the bigger the brain," he said.A man who is compressing his forehead with a cooling cloth is taking a nap in the middle of the hot weather in Beijing, China, on July 24, 2023. The brain is the human body's organ that requires the most energy. Although the weight of the brain is only about 2 percent of the body's weight, it consumes more than 20 percent of resting metabolism energy.

However, DeSilva's theory is also debated. Eva Jablonka, an emeritus professor from the Department of History and Philosophy of Science and Ideas at Tel Aviv University in Israel, emphasized that not all hunter-gatherer societies become complex in the same way as experienced by the Egyptian society 3,000 years ago. In fact, the brain size of the Egyptian people at that time had also shrunk.

 

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