New developments in actor Matthew Perry’s death are shining a light on the ethics and efficacy of using ketamine as a therapeutic drug. To learn more about the promise and pitfalls of ketamine treatment, CNN’s Chief Medical Correspondent Dr. Sanjay Gupta turns to David Feifel, one of the first clinicians in the country to use ketamine to specifically treat depression. Learn more about your ad choices. Visit <a href="https://podcastchoices.com/adchoices">podcastchoices.com/adchoices</a>

Is There a College Mental Health Crisis?

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.