University of North Carolina conducted a research in 2004 which revealed that collisions in football are so intense that the force exerted is equal to that of a vehicle smashing into a wall at 25 mph. Grievous injuries receive serious attention. But on such a forceful contact if players suffer concussion they are encouraged to carry on.
A link has been established between a degenerative brain disease chronic traumatic encephalopathy (CTE) and concussions. Not too long ago NY Jets had admitted that Leonard Williams did suffer a concussion during their game against New Orleans.
Injuries are a part of football.