Is it possible to have too much of a good thing? Dr. Sanjay Gupta breaks down what research says about long-distance training and neurodegenerative diseases. Plus, he reports on which type of field is safer for young athletes to play on: turf or grass.  
This episode was produced by Jesse Remedios. 
Showrunner: Amanda Sealy 
Medical Writer: Andrea Kane 
Senior Producer: Dan Bloom  
Technical Director: Dan Dzula  Learn more about your ad choices. Visit <a href="https://podcastchoices.com/adchoices">podcastchoices.com/adchoices</a>

The Science Behind a Broken Heart

All over the world, there are people who are living extraordinary lives, full of happiness and health – and with hardly any heart disease, cancer or diabetes. Dr. Sanjay Gupta has been on a decades-long mission to understand how they do it, and how we can all learn from them. Scientists now believe we can even reverse the symptoms of Alzheimer’s dementia, and in fact grow sharper and more resilient as we age. Sanjay is a dad – of three teenage daughters, he is a doctor - who operates on the brain, and he is a reporter with more than two decades of experience - who travels the earth to uncover and bring you the secrets of the happiest and healthiest people on the planet – so that you too, can Chase Life.