Doctor, My question is. First, i am C.O.P.D. Have been for a long time, and getting worse. As it gets worse, so does my memory, and brain function. Hard to make a decision, can't focus, can't concentrate, i forget a lot, hard to concentrate on anything, my mind keeps jumping from one thing, to another. OK on to the question, Can, the copd, or lack of oxygen in my blood to the brain, cause this, and could this be alsziemers? I am 58 years old, and have hard jobs all my life. Just wondered if lack of oxygen could cause, or contribute to this problem?