CNN's Dr. Sanjay Gupta shares his top health advice as the world rings in the new year. | CNN

As part of his reporting for “The Last Alzheimer’s Patient” documentary, CNN chief medical correspondent Dr. Sanjay Gupta travels to Jackson Hole, Wyoming, to learn more about an audacious theory on treating Alzheimer’s disease. After Dr. Paul Cox, founder of the nonprofit Brain Chemistry Labs, discovered the source of a mysterious neurodegenerative disease afflicting people in Guam, those clues led him to a novel way of thinking about Alzheimer’s and a simple amino acid called L-serine. "Dr. Sa

There's new evidence — and new hope — that lifestyle interventions can lead to cognitive improvement in people with mild cognitive impairment and early dementia due to Alzheimer's disease. Dr. Sanjay Gupta, CNN chief medical correspondent and host of the podcast "Chasing Life," has answers to your questions about dementia risk. Hear more answers from Dr. Gupta: https://cnn.it/3KT0iFN | CNN

In his new book, Dr. Sanjay Gupta explores America’s chronic pain crisis, noting that 50 million people—about 20% of the population—suffer from it. He links the rise to aging, sedentary lifestyles, loneliness and inflammation, but stresses that pain doesn’t have to be as severe or long-lasting as many experience. | CBS Sunday Morning