How do crash helmets reduce injuries?

A football helmet reduces injury in quite some ways.

1: They reduce the ability to crack your skull.

2: They reduce the ability to cause brain damage of any kind.

3: The facemask keeps you from busting your lip, loosening/cracking/chipping teeth,and breaking your nose or causing any other sort of nose injuries.

4:They also reduce the ability to break/fracture your jaw.

Back Then

Back then, when football was just invented, it is said that players wore thin leather helmets with no facemask. There were alot more facial injuries than there are today

TODAY NOW

People have made new helmets with strenthened plastic under coated with soft material to keep you head in line. There are still head injuries or injuries on the face like: Broken Jaw(from about 5 to 12 weeks depending on how many places were broken or how hard the impact was),mild concussion(some memory loss,head aches.from about 2 to 6 weeks),and severe concussion(lots of memory loss, many head aches.(from about 6 to 13 weeks or possibly more). But football helmets reduce injury in many,many ways