Our walking path took us past a large garbage can that sat near an apartment complex. It was a favorite stopping point for dogs and Lucy, our willful terrier, pulled me over to it. I asked, "Oh, do you want to stop and smell the garbage?" Gery didn't appear to be paying attention, but not only was he listening, he decided I was talking to him. He walked resolutely to the garbage can, removed the lid, lowered his head and took an enthusiastic whiff." At age 56, Gery Sutton - a family physician specializing in geriatric medicine - was diagnosed with early onset Alzheimer's. For three years, his...