Multiple concussions in a lifetime were shown to affect the ability to plan and pay attention, though research also underlined health benefits of playing sport

Source: Three or more concussions add up to long-term cognitive problems, study suggests | Concussion in sport | The Guardian

Great. I’ve had 5 knock out blows including a five-inch skull fracture, plus one non-knock out concussion that left me with “slow brain” for almost 3 weeks before the brain fog lifted.

I really am a brain injured idiot. This study is not encouraging.