Concussion denial: in mixed marital art (or UFC) fighting like bike helmet debate?

[rebeccaC]

I skimmed an article a while back, in which a neurosurgeon claimed that helmets do little to protect the brain in cycling accidents. I'll see if I can find it, but I seriously doubt that is true. But...
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a good helmet can help eliminate some of the impact on the outside of the head but your brain can still move and hit the inside of your skull. knowing the symptoms of a mild+ concussion is good info to have....and for helping others. i always try to focus on bike safety but sometimes quick accidents happen. i not only wear a helmet, i've also learned how to land/roll in different falls for more head protection.
aikido keeps working itself into my posts in this thread

[zoom-zoom]

a good helmet can help eliminate some of the impact on the outside of the head but your brain can still move and hit the inside of your skull. knowing the symptoms of a mild+ concussion is good info to have....and for helping others. i always try to focus on bike safety but sometimes quick accidents happen. i not only wear a helmet, i've also learned how to land/roll in different falls for more head protection.

MIPS helmets can help with the rotational impacts inside the skull, too. When I crashed this Fall (on loose, rutted gravel going down a hill and trying to avoid my kid in front of me and an oncoming car) I destroyed my helmet (dented and cracked, but its contents were unscathed). It had needed replacing for a while for being just flat-out nasty from years of use. We replaced it with a Lazer MIPS model.