It’s a life of episodes — perhaps a fitting way of describing life with dementia or Alzheimer’s. It’s one thing to lose your health, your job or a loved one, but what happens when you lose yourself? Is there an individual or family tragedy any greater? And yet it’s lived out every day by thousands of Londoners and most of us will never know about it until signs emerge somewhere within our intimate circle. In London some 9,000 families wear themselves out in silence at an agony that can rip one’s insides out. Across Canada, almost half a million citizens suffer from dementia and Alzheimer’s. Within 15 years that number will reach one million. Globally, 100 million struggle with the disease — a number that will reach 300…