People often talk about maintaining their physical health but brain health is an afterthought. It turns out brain fitness at any age heightens and protects brain function and can even prevent brain disease. Sanjay Gupta, author of "Keep Sharp: Build a Better Brain at Any Age," Maria Shriver, founder of the Women’s Alzheimer’s Movement, and Natalie Morales, West Coast anchor of NBC’s Today Show, all have personal stories about dementia. In this episode, they talk about why it's important to link lifestyle with brain health in order to live a longer, happier life.