Just a few weeks after my 64th birthday, I discovered an interesting video. The timing couldn’t have been better. The topic: maintaining brain health as we age. This video has tips, based on research, for preserving or improving memory and reducing brain inflammation, which is a culprit in cognitive decline. “Daily lifestyle habits have a much bigger impact on your longevity than your genes,” Dr. Gary Small, former director of UCLA’s Semel Institute for Neuroscience and Human Behavior, explains in the video. Did you know that Indian people have less dementia, because they eat so much turmeric in their curries? Or that a brisk 20-minute walk every day lowers the risk of Alzheimer’s disease? Most people know that yoga, meditation…