No different than the heart remodeling and ventricular hypertrophy you probably get from AAS and increased blood pressure
How about the harm it can do to the liver/kidneys and other vital organs?
I bet you still use AAS anyways. Burying your head in the sand and pretending nothing bad can happen doesn't make the risks go anyway.
If anything, you should want to know what all of the risks are, then make your decision.
If you can't accept the risk, stay natty and stick to your creatine.
If you accept the risk, then that's up to you. I've already made peace with the fact I've probably taken years off my life. Have you?