With the advancement of science and technology, people's daily life is constantly changing. These changes have brought us great convenience, but also brought some potential harm.
According to foreign media reports, experts from Mount Sinai Medical Center said that some common chemicals in plastics, cosmetics, food packaging, and other products are having a serious impact on human health and fertility.
Shanna Swan, a reproductive epidemiologist at Mount Sinai Medical Center, said that in the past few decades, the sperm count of healthy men has been declining sharply. To this end, they have carried out a series of studies.
Although there are many reasons that affect the quantity and quality of sperm, Swan’s current work focuses on how common chemicals such as phthalates and bisphenol A continue to harm reproductive health, and how they affect prenatal contact Biological development of children.
Swan said that although scientists still know very little about the link between chemical exposure and gender expression, some changes are obvious from the current research because these chemicals seem to be eliminating biological activity between young boys and girls. Learning differences, both physically and mentally.
There are gender differences between the two sexes, which are mainly manifested in that the intelligence of men is closely related to the gray matter volume of the frontal lobe and parietal lobe, while the intelligence of women is related to the white matter volume and the gray matter volume of Broca's area. The thickness of the frontal cortex is related to the intelligence of women, and the thickness of the temporal-occipital cortex is related to the intelligence of men.
Therefore, men’s intelligence may rely on less brain tissue with thicker cortex and densely distributed fibers to complete medium-difficulty spatial cognitive tasks; women are good at completing medium-difficult language cognitive tasks.
Of course, the size and structure of the brains are obviously different between men and women, but they can reach the same level of intelligence, indicating that they use different brain structures and different functional methods.
But phthalates seem to be able to reduce this gender difference, and the situation is becoming increasingly serious. Because the difference in the next generation is inherited from the previous generation, and with the continuous exposure of chemical substances, this difference will gradually become smaller with inheritance.
Swan pointed out that as the gender gap continues to decrease, male fertility and sperm quality continue to decline. Due to genetic factors, this will have a more profound impact on our offspring.
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