Psychologists have long considered the process of forgetting as key to a healthy mind, yet neuroscientists haven’t paid much attention to it in the past, Frankland says. “If you embrace the idea that forgetting is healthy,” then it makes sense that neurogenesis may contribute to the clearing out of old memories, he says. Although it’s pure speculation at this point, he says, it’s possible that one way that antidepressants help people with depression, a condition linked to reduced neurogenesis, “is to promote some sort of clearing or forgetting,” he says.
