My father is a 65 year old diabetic and he doesn t take any insulin or the prescribed drugs that have been recommended to him. Yesterday he was in the kitchen and started to not feel well. When he turned around to walk into the living room and sit down he lost all of his strength and started to fall. He was able to catch the counter top on the way down with his arm but it took all the strength he had to hold himself up until my mother got him chair. He also mentioned that he was sweating profusely. In addition, at least one of his carotid arteries is 50% blocked. What do you think caused the dramatic strength loss....could it have been a heart attack?