In a new statement, Diane Keaton’s family is revealing the 79-year-old legendary actor died from pneumonia. NBC’s Stephanie Gosk reports and medical contributor Dr. Natalie Azar joins TODAY to explain what makes pneumonia such a dangerous illness. » Subscribe to TODAY: youtube.com/@TODAY TODAY brings you the latest headlines and expert tips on money, health and parenting. We wake up every morning to give you and your family all you need to start your day. If it matters to you, it matters to us. We are in the people business. Subscribe to our channel for exclusive TODAY archival footage & our original web series. Connect with TODAY Online! Visit TODAY's Website: today.com Find TODAY on Facebook: facebook.com/today Follow TODAY on Twitter: twitter.com/TODAYshow Follow TODAY on Instagram: instagram.com/todayshow » Stream TODAY All Day: today.com/allday About: TODAY All Day is a 24/7 streaming channel bringing you th...