Bananas Do Not Cancel Blueberry Benefits, Experts Say

Key points

• Dr. Rhonda Patrick claimed on the Mel Robbins Podcast that adding bananas to blueberry smoothies reduces polyphenol absorption due to the enzyme polyphenol oxidase.
• A 2023 study cited for this claim involved only eight participants and did not test bananas and blueberries together, according to Dr. Joe Schwarcz of McGill University.
• The study focused on flavanols, which are less abundant in blueberries than anthocyanins, the primary antioxidants associated with blueberry health benefits.
• The 2023 study was funded by Mars, a company that sells flavanol supplements and chocolate, raising potential conflict-of-interest concerns.
• Registered dietitians emphasize that nutrient interactions are common but minor; eating a varied diet is more important than avoiding specific food combinations.

Background

This story follows a broader trend of viral nutrition claims that oversimplify complex biological interactions. Previous coverage in our archive has highlighted how public health discussions often focus on marginal risks or benefits of specific habits, such as light cannabis use, while experts urge a focus on overall lifestyle patterns. The current debate mirrors earlier instances where single-study findings were amplified into definitive dietary rules, despite limited evidence.

Why it matters

Misinformation about food interactions can lead to unnecessary dietary restrictions or anxiety. Understanding that minor nutrient interactions do not negate the benefits of a varied diet helps consumers make practical, evidence-based choices without obsessing over specific pairings.

What to watch

Experts recommend continuing to eat a diverse range of fruits and vegetables. If concerned about polyphenol levels, individuals can substitute bananas with lower-enzyme fruits like mango or pineapple, or use other thickeners like oats or avocado. No major policy changes or new studies are expected to alter the current scientific consensus.