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

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