>You're saying that the higher bands of 5G cannot even penetrate the human skin. So this means that the human skin (and I assume at least a couple of layers of body under the skin) effectively absorbs all the energy of the signal that reaches it. This is one of the main concerns.

The top layer of skin (the epidermis) is dead skin cells. Cancer is when cells start reproducing uncontrollably, and dead cells don't reproduce anyway. Its the living cells that you need to protect