Parsifal, Please do some more study rather than fluffing off at the mouth with your educated guesswork. Attend a few sessions in the classroom and in reality to understand that it is the greatest living dilemma we have with aged care in the future. We are currently experiencing a growth pattern which can be attributed to numerous causes, lifestyle patterns, diet, chemical ingestion, activity and the lack of mental stimulation just to mention a few. I have no intention in waiting till your death as you may be showing signs and symptoms already although i don't believe anger is a single contributor to the concern but i will take it as another indicator.