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Evolution experts have outlined the three main areas in which our species continues to change.
The process of human evolution has endowed with elaborate skills and abilities that our ancestors did not have. A scientific study has now highlighted specific areas that humanity continues to develop.
The development of more complex organs has made it possible for humans to develop tools and communicate through verbal and written language.
Human origins experts now believe that many of the advanced features include “complex symbolic expression, art and sophisticated cultural diversity,” which only occurred in the last few centuries.
This indicates that our species continues to adapt to the demands of an ever-changing environment.
Here are 3 specific examples of how the human body continues to change.
Low body temperature:
A temperature of 37 ° C is generally accepted as the optimal body temperature.
However, a new study from Stanford University suggests that the most accurate reading is about 36.6 ° C.
The researchers examined medical records for the past 200 years in the United States.
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When average body temperatures were calculated over these years, the scientists found that body temperatures decreased by 0.7 degrees Celsius.
The study’s author, Dr. Julie Parsonet, said in a statement that humans are “much healthier than humans in the 19th century.”
However, he added, humans today are taller and fatter in cooler temperatures.
This downward trend can be attributed to the global reduction in infections, as well as “better living conditions”.
Changes in genes:
Human genetics follows a state of constant change “from generation to generation”. A good example of this is the increase in genes that allow us to tolerate lactose.
This increase is likely to occur, as most humans have drunk milk their entire lives.
An enzyme that allows humans to digest dairy products is inactivated when they reach adulthood.
Bones getting lighter and weaker:
In fact, our bones are getting lighter and more brittle, despite all the milk consumption.
Due to the sedentary nature of our modern life, our bones have decreased in strength and density.
And this is almost certainly a direct result of the reduction in physical activity.
Scientists believe this weakness began about 12,000 years ago, when humans switched from hunting to sedentary agriculture.
Professor Joshua Acke of Princeton University said that humans “are not immune to the effects of natural selection.”
He added that our environment is definitely different “from what it was a century ago. It is not difficult to imagine things like the evolution of a genetic culture, which plays a more prominent role in the future of human evolution.”
Source: Express
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