Playing the ball in the head provokes changes in the functioning of the brain that affect vision, as scientists from Indiana University established. They watched dozens of football players and noticed short-term damage to the membranes connecting the eyes and gray matter in the brain. Another evidence is obtained that playing the ball in the head can be very dangerous to human health, even if it does not cause concussions..

In England, there are restrictions on the number of permissible episodes of heading the ball among young players. Science is getting more and more evidence that such sports microtraumas can later lead to the development of severe and incurable neurodegenerative diseases like amyotrophic lateral sclerosis. This disease, which kills a person in just a few years, is more often found in professional athletes who have gone through a large number of head injuries or who often play with their heads in the ball.

A study published by JAMA Ophthalmology Magazine showed that playing ball in the head affects the meninges that connect the eyes and cognitive function.. Changes were recorded through tests for pupil mobility and intellectual skills like mindfulness, language and concentration.

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