Memory is the glue of life. Without it, our focus softens, our experience of the world blurs, and our identities melt away. But as people age, their memory declines. Many billions of dollars have been spent to understand the biological basis of dementia and to devise a cure. In most cases, they have failed spectacularly. But what if, rather than study the brains of people with advanced memory loss, we instead studied the brains of people with the opposite condition: extraordinary memory and brain health in old age? For the past few decades, Sandra Weintraub, a scientist at Northwestern University, has been part of a team studying the brains of "super-agers," people 80 and older who have the memory ability of people in their 50s. In a new paper published this year to considerable fanfare, she found that super-agers didn't have much in common. They didn't share a diet, or an exercise regimen, or a set of maladies or medications. One thing, however, united them: their social relationships. Today's guest is Sandra Weintraub. We talk about the science of memory and the brain and the protective benefit of social connection for our minds and ourselves. If you have questions, observations, or ideas for future episodes, email us at PlainEnglish@Spotify.com. Host: Derek Thompson Guest: Dr. Sandra Weintraub Producer: Devon Baroldi Learn more about your ad choices. Visit podcastchoices.com/adchoices