New research suggests that cold weather may actually affect the human body's immune response, making us more susceptible to colds, flus and other upper respiratory infections. Benjamin Bleier, a sinus specialist at Mass Eye and Ear and a senior author of the study, joins John Yang to discuss its findings.

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:
Facebook: http://www.pbs.org/newshour
Twitter: http://www.twitter.com/newshour
Instagram: http://www.instagram.com/newshour

Subscribe:
PBS NewsHour podcasts: https://www.pbs.org/newshour/podcasts
Newsletters: https://www.pbs.org/newshour/subscribe