The Genetic Secret of Immunity: What Distinguishes Women from Men

It has long been known that men get viral infections more often and more severely. But only now have researchers from the University of California, Los Angeles been able to precisely explain why this happens.

X-chromosome and genetic protection

Scientists have discovered that a key role is played by a gene located on the X-chromosome, which affects the activity of NK (natural killer) immune cells. These cells recognize and destroy virus-infected cells.

More doesn't mean better

Although men have more NK cells, this doesn't make their immunity stronger. The fact is that women have two X-chromosomes, and therefore two copies of the UTX gene, which is responsible for producing a special protein. This protein reduces the total number of NK cells but significantly increases their effectiveness.

Women's immune advantage

According to Professor Maureen Su, the high content of UTX protein makes women's NK cells more "professional" in fighting viruses. This explains why women generally have an easier time with viral diseases.

Conclusion

It's not about quantity, but quality: the female body provides a more effective immune response, which gives women an advantage in fighting viruses.

Source: Pravda.ru