HOW MANY people have a brain injury (TBI) without knowing (realizing) it?

Sharing some Information and Thoughts on Head and Brain Injury

“One out of every eight people over 45 has a brain injury without realizing it, according to a Dutch study reported in The New England Journal of Medicine.”  ????

from

http://www.brainline.org/content/2014/07/you-disappear.html

and

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4208832/

True (perhaps, for  very mild brain injury)… or an academic/research exaggeration???

I guess it depends on how you define “what is a head injury?”  !

What do YOU think?

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