The sperm of the intellectual is good.

British studies seem to have revealed a trend toward better quality of semen as well as smart men. Is not that "stupid do not leave descendants"?

Details are as below.
BBC NEWS | Health | Intelligent 'have better sperm'

A research team at the King's College of Psychiatric Institute at the University of London analyzed the data of US soldiers at the time of the Vietnam War, and as a soldier who gave good results at the intelligence test, there were more spermatozoa and tendency for sperm movement to be active It is said that it was seen. The used sperm sample was collected from a former soldier of 425 people (serving in Vietnam, Germany, Korea etc) in 1985.

The relationship between intelligence and health condition has been thought to be largely explained by lifestyle and so on (smart rate is lower for smart people, exercise, etc.), but this research results are based on smoking And the quality of intelligence and semen (number of sperm, concentration, exercise capacity) even though excluding factors such as drinking habits and obesity, a statistically negligible correlation was seen, and intelligence and sperm It seems to suggest the existence of genes related to both quality.

However, some experts think that the relationship between intelligence and quality of sperm can be explained by simultaneous development of the brain and testicles in the womb.

The difference in sperm quality due to intelligence is slight, and there is no difference in ability to leave descendants.