Yes concussions are bad.  Yes multiple concussions can lead to CTE and other brain dysfunction but concussions are not the be-all end-all risk factor when it comes to adverse brain health in contact sports.  Studies are showing that cumulative sub concussive hits take their toll as well and can be a greater predictor of future … More Study – Mileage (More-so Than Concussions) Predict Long Term Brain Risk in Contact Sports