I want to know if I m likely to have dementia eventually in life, since at age 6 in 1979, I d a tramatic brain injury, brain dead for 5 weeks from a bus having ran me over, and had to restart my life at age 7 like a premature baby. now 45 going on 46 in May, I only feel between 18 and 20; I hardly have short term memory, whereas a lot of long term memory of negative experiences. Ask me anything if you need more info.