I don't think you can take a single event and draw conclusions from it. As others explained, there is no mechanism that would make sense to cause any mutations and I bet we would have picked up on increase in cancer rates if this was a concern. Remember, people were afraid of the speed in railroads, food out of the electric oven and microwaves ...
There are proven areas to reduce cancer risk, including mouth / throat. HPV vaccination for example. Both men and women. But the anti-vaccers are usually also the anti radio-frequency crowd. So there is that ...
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