We’re in the midst of one of the worst flu seasons in the last 25 years. And it’s not uncommon for people to slam vitamin C- and vitamin D-rich foods and supplements to combat their colds and respiratory issues — when it comes to being sick, we’ll do anything to avoid it. But epidemiologist Katelyn Jetelina told Explain It to Me host Jonquilyn Hill that all these vitamins may not be making as big a difference as we may hope.

For more on this year’s cold and flu season and how to actually strengthen your immune system, listen to the full episode of Explain It to Me wherever you get your podcasts.

Subscribe to our channel and turn on notifications (🔔) so you don’t miss any videos: http://goo.gl/0bsAjO

Vox.com is a news website that helps you cut through the noise and understand what’s really driving the events in the headlines. Check out http://www.vox.com.

Watch our full video catalog: http://goo.gl/IZONyE
Follow Vox on TikTok: http://tiktok.com/@voxdotcom
Check out our articles: https://www.vox.com/
Listen to our podcasts: https://www.vox.com/podcasts