The human brain has been increasing in size over the past 75 years

The human brain has been increasing in size over the past decades.

The human brain is one of the most impressive organs in the animal kingdom, and to this day it remains puzzling to scientists who want to uncover the mysteries surrounding it.

Throughout the millions of years of human biology, many scientists have hypothesized that the human brain is on the verge of shrinking.

Some studies have questioned whether global warming due to climate change could be the driving force behind changes in human brain size.

However, the journal JAMA Neurology published a report from the University of California Davis (USA) noting that, in the short-term time frame related to biological changes between generations, human brain volume actually increased by 6.6%.

"The decade a person is born in has an impact on brain size and potentially on long-term brain health," said study author Charles DeCarli. Genetics play a major role in determining brain size, the study authors said, but their team found that outside factors, such as health, social, cultural andeducational factors, are likely to play a role.

The study was based on community data that was first collected in 1948 and continues to this day. DeCarli's team used this database to analyze changes in brain structure over time, specifically for people born from the 1930s to the 1970s.

While the volume of the human brain increased by an average of 6.6%, the surface area of ​​the cerebral cortex increased by a total of 15% in people born in the 1970s compared to the 1930s.

In addition, brain structures, such as white matter, gray matter, and the hippocampus, also increased over time.

The team of experts believes that the above trend comes from the improvement of environmental factors in the early stages of human life, such as health care aspects, socio-cultural changes and educational factors.

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