Clip | 4m 53s
Like many spice junkies, Dr. Marco Tizzano once believed he could develop a tolerance to the burning, painful sensations generated by eating chilies. But as a chef and researcher in chemosensory sensations, he now knows better. Dr. Tizzano explains how capsaicin creates a chemical cascade inside your body, and why emotions might make chili lovers think they can handle the heat.
Aired: 01/30/17Video has closed captioning.