system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does higher frequency EM become more dangerous?
gpt
Because the energy in a photon is proportional to its frequency. Multiply frequency by ten and you multiply energy by ten, too. In the case of human life, it becomes dangerous once it has enough energy to disrupt biological molecules. 

UV can do a little bit of that, but won't penetrate the skin (so it causes sunburn). X-rays are worse, and gamma rays are quite capable of blasting a DNA molecule apart.