Former First Lady Rosalynn Carter has been diagnosed with dementia. That news comes about three months after it was announced her husband, former President Jimmy Carter, was moving into hospice care. Caregiving has been a major focus of Mrs. Carter’s life and work. William Brangham looks at that legacy and the impact dementia has on millions of families. Stream your PBS favorites with the PBS app: https://to.pbs.org/2Jb8twG Find more from PBS NewsHour at https://www.pbs.org/newshour Subscribe to our YouTube channel: https://bit.ly/2HfsCD6 Follow us: TikTok: https://www.tiktok.com/@pbsnews Twitter: http://www.twitter.com/newshour Instagram: http://www.instagram.com/newshour Facebook: http://www.pbs.org/newshour Subscribe: PBS NewsHour podcasts: https://www.pbs.org/newshour/podcasts Newsletters: https://www.pbs.org/newshour/subscribe