Is more speed always good? 5G

In last decade, we have seen development of speed in cellphone networks start from 2g to current 4g and now finally 5g. No doubt, it will be faster than previous one but does it pass all the safety requirements to operate among us all without jeopardizing our health in the long run.
Just for quick tip, all of our devices currently operate at 3 GHz and this new technology of 5G is going to operate above 30GHz. Sometimes more of everything cannot be the ultimate solution.