[version_five]

The consequence of this would be heating, which is how radiation safety is already established. I'd be curious to see how the absorption of EM into DNA differs from other tissue (or I guess molecules) more than the specific observation that it can absorb EM over a broad band. That's all "fractal antenna" really means in this context (broadband absorbtion and therefore potential for heating), it is not some special feature

I remember many years ago there was a bit of a fractal craze, in signal processing and antenna design. The idea for antennas was that self similarity gave a broad resonance because there was always some fractal element that was the right size. In practice I never saw any indications they were better than other antennas.

I'd be much more concerned if DNA had a resonance somewhere in common radio bands where it absorbed a lot of EM, that would be much more likely to be dangerous.