This is very sad, but it definitely is a potential hazard in the sport of boxing.
I remember that as a young man when I used to box recreationally, there were many times where I had gotten knocked out cold and upon being woken up with ammonia inhalants, I would think that this shit can not be sustained for too long, especially as a professional boxer. You can train and build various parts of your body to take serious strikes, but the head doesn't have exercises to reduce the impact of blows.
The type of head trauma experienced by these guys is the perfect ingredient in a recipe that would lead to severe brain damage and/or even Parkinson's disease.
For those that take part in boxing in the amateur circuits, be careful guys.
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