Cocaine Using Senior Citizen

First of all, if your dad had addiction issues and is using cocaine again he is most likely at high risk for his addiction to take off again and I would suggest an intervention as soon as possible. I would be more concerned about the affects of cocaine, being a stimulant, on his heart and less concerned about senility. His casual use of cocaine is very concerning in light of the history you present and senility is way down on the list of dangers his return to using presents at this point. You are absolutely correct in thinking cocaine is more dangerous for an older person that for a younger one and I hope your concern translates into action to prevent serious consequences ahead.