A recent British study suggests that men with higher IQs tend to have better quality sperm. The research, conducted by a team of scientists in the UK, analyzed data from U.S. veterans who served in the Vietnam War. The findings revealed that individuals who scored higher on intelligence tests also had more active sperm. Published in *The Wisdom* magazine, the study supports an older theory: genes responsible for human intelligence may also influence other biological functions.
This implies that even small genetic changes affecting intelligence could also impact other areas, such as sperm quality. In other words, people with healthier genes may possess a "biological advantage," leading to better overall health, sharper minds, and improved physical traits.
Previously, scientists believed that lifestyle choices played a bigger role in linking intelligence and health. For example, people with higher IQs were thought to be less likely to smoke and more likely to exercise—both habits known to positively affect brain function.
The study involved 425 men who took multiple intelligence tests and provided semen samples. Researchers found that those with higher IQs showed better sperm quality across three key factors: quantity, concentration, and motility—regardless of age or lifestyle habits. This new evidence adds a genetic dimension to the long-standing debate about the relationship between intelligence and health.
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