The Neveda State commission looked at the raw data and found pro boxers got hit in the head WAYYYYYY more than pro MMA fighters. In this sense MMA was judged to be a "safer" sport.

Here in the UK and Ireland amateur fights often use Class D MMA rules, which allow everything except strikes to the head either when standing or on the ground. Class D rules are 100 times safer than boxing and are used either for weekend warriors who want to do a bit of fighting or youngsters who want to get a bit more experience.
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"Let your food be your medicine, and your medicine be your food" Hippocrates.