The Fuzzy Science of Fruit Mix Ups The latest controversy to hit the wellness world involves a seemingly innocuous combination: blueberries and bananas in a smoothie. A biomedical scientist, Dr.
Rhonda Patrick, made waves on the Mel Robbins Podcast by claiming that adding banana to a blueberry smoothie can "kill" the nutritional benefits of the berries. But is this claim backed up by science?
To understand what's going on here, it's essential to examine the enzyme polyphenol oxidase (PPO), which Dr. Patrick says breaks down polyphenols in bananas and reduces their nutritional value.