We get an update on Pope Francis' visit to Congress and his message on climate change. Then gastroenterologist and nutritionist Dr. Gerry Mullin joins us for a discussion of fad diets and fermented foods.
Pope Francis in Congress; the Food Doctor, Gerard Mullin
![](https://npr.brightspotcdn.com/dims4/default/fed1777/2147483647/strip/true/crop/640x360+0+0/resize/880x495!/quality/90/?url=http%3A%2F%2Fnpr-brightspot.s3.amazonaws.com%2Flegacy%2Fsites%2Fwyprmain%2Ffiles%2F201509%2F21470911590_3ddd2c1a5a_z.jpg)
Dave Malkoff
/
Flickr