Ski Helmet Use Is Up, but Brain Injuries Aren’t Down – NYTimes.com.
Had almost 50 years to study the problem.
From all the ski racers, the rough and tumble here and there the issue lies I believe with the neck sustaining the impact between the head bouncing around and holding in place with the spinal cord vertebrae to the body.
Between both body and brain – the strain on the neck ends up being transferred to the head/brain combo.
Just a matter of physics really – body absorbs, but head can only take so much.
Would be interesting to correlate MOTORCYCLE ACCIDENT HEAD INJURIES TO SKIING HEAD INJURIES.
Live~NRGY 
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