HI I AM A HEALTHY 83 YEAR OLD, WIDOWER, I SEEM TO BE GETTING SLOWER AND FORGETFUL FOR ABOUT LAST 4 YEARS, SINCE MY WIFE PAST AWAY. I TIRE MORE EASILY, I AM VERY ACATIVE, SWIMMING LAPS, BIKEING SEVERAL MILES EVERY A.M. AND WALKIING ALMOST EVERY DAY, ALL THIS BESIDES HOUSE KEEPING. IT ALL HAPPEND RIGHT AFTER I RADIATION AND HORMONE SHOTS FOR PROSTATE CANCE, WHICH IS CLEAR AFTER 5 YEARS. WHAT AM I DESCRIBING TO YOU ???? DONALD