SSD Defrag concerns

will defragging an ssd destroy it and if so, is there a way to prevent that with a linux OS? I am running Mint 18.3 Cinnamon 64bit. I was told a while back that Linux systems auto-defrag either on start-up or shut-down. I was also told I should try to disable the auto-defrag or at least see if my system recognises the ssd and prevents auto-defrag. I am a bit over my head here...