The human body has 23 pairs of chromosomes in each cell, with most males having an X and a Y chromosome, while females have two X chromosomes. The Y chromosome determines biological sex, but its decline over millions of years poses significant risks.
Scientists have long known that the Y chromosome has been shrinking, from having 900 protein-coding genes to just 100. This reduction makes it unable for genetic recombination, and a study published in Cell suggests the Y chromosome could disappear within 11 million years. If this happens, humans may need to find alternative ways of reproducing.
The decline of the Y chromosome has immediate effects on men, with some experiencing the loss of the Y chromosome at around age 50. This can lead to increased susceptibility to diseases such as Alzheimer’s and heart disease, reducing their lifespan by an average of 5 years.
A gene present on the Y chromosome, UTY, helps regulate the immune system in men. Without it, the body becomes less effective at fighting cancer and other diseases.
To slow down the loss of Y chromosomes, adopting a healthy lifestyle is key. A balanced diet, quitting smoking, exercising regularly, and getting adequate rest can help develop a better immune system and reduce aging.
While the future of human reproduction remains uncertain, it’s essential to remember that evolution has its own pace, and humans have time to adapt. For now, focusing on maintaining good health through lifestyle choices is crucial.
Source: https://www.onlymyhealth.com/men-are-losing-y-chromosome-what-does-it-mean-for-men-health-12977833132