The next time you forget what you were going to say, take note. As we age we are subject to cognitive deterioration that manifests as for example, your thoughts escaping you, forgetting where your keys are, taking a little bit more time to remember a persons name, and so on. Brain function need not decline with age, however. Our intellectual functions degenerate overtime because our brain cells die and whether we can grow new ones is a century’s old debate. New research shows