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					Originally Posted by troutman  Which Is More Dangerous, Rugby or Football? 
https://www.theatlantic.com/notes/2016/10/rugby/504143/
So which sport is more dangerous? Rugby players wear far fewer pads, but  it’s those pads that enable and embolden someone to hit another player  with greater speed and force—and it’s the sudden stopping, not the  impact itself, that causes the brain to crash into the inside of the  skull, causing a concussion. Rugby players don’t wear helmets, but  rather scrum caps, which do little more than prevent cauliflower  ear—though again, it’s the helmet that allows for harder hits and a  harder projectile, so helmets can be more dangerous for players than  caps.
 The Redditor also points to a 2008 study showing lower rates of injury in college rugby than college football.
 
 Football may have a bigger concussion crisis, and a higher injury rate  overall, but rugby has a distinct and serious problem: spinal injuries.
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Apples v Oranges
It is very difficult to find a good comparison between the two, specifically because they are played at the highest level in the same country.
Also, Scrum Caps are to stop cuts, players don't generally wear them because of their ears.