Bananas in Smoothies: Pros and Cons According to Experts

Bananas are a popular ingredient in smoothies, yet a social media video has sparked debate over their impact on the nutritional content of other ingredients in smoothies, such as blueberries.

Enzyme Concerns with Bananas

Dr. Rhonda Patrick, a biomedical scientist, shared her smoothie-making tips on the ‘Mel Robbins Podcast.’ She avoids bananas due to the presence of polyphenol oxidase (PPO), an enzyme that can degrade polyphenols beneficial for gut, heart, and brain health. This enzyme also causes browning in cut fruits.

Impact on Nutrient Absorption

A study cited by Patrick, published in Food & Function in 2023, explored nutrient absorption in eight healthy men. On different days, participants consumed either a banana smoothie, a mixed berry smoothie, or a flavan-3-ol supplement with milk. Findings indicated that the concentration of polyphenols was approximately 84% lower after the banana smoothie compared to the supplement.

The study implied that adding bananas to berry-rich smoothies might reduce polyphenol absorption.

Alternative Ingredients and Recommendations

Patrick suggests using avocado for a creamy texture with much less sugar and more nutrients like vitamins and monounsaturated fat. These can help in absorbing carotenoids from other ingredients like kale.

Some nutrition experts, however, argue that bananas should not be viewed negatively based on limited research. Registered dietitian nutritionist Ilana Muhlstein cautions against assuming a loss of health benefits in smoothies containing bananas, highlighting the need for further research.

Customized Nutrition Advice

New York holistic nutritionist Robin DeCicco emphasizes that nutrition advice should be personalized, pointing out that many Americans consume too few nutrient-rich foods like fruits and too many processed foods. Personalized advice based on individual health journeys is crucial.

For those focused on maximizing polyphenol intake, alternatives such as frozen zucchini, avocado, or Greek yogurt might replicate the creamy texture without the impact of banana’s enzymes.

A nutritionist mentioned, “If you’re eating a banana instead of french fries, that’s good.”

Smoothie Recipes without Bananas

DeCicco and others recommend using avocado or similar substitutes for a low-sugar, high-protein smoothie. Here are suggested recipes:

• No-Banana Smoothie:
  Mix unsweetened almond or soy milk, organic frozen berries, vanilla plant protein powder, ground flaxseed, and nut butter. Add organic mixed greens, and season with cinnamon or extracts to taste.
• With Banana Smoothie:
  Combine unsweetened Greek or Icelandic yogurt, a ripe banana, half a pear or apple, ground seeds, mixed leafy greens, and optional collagen. Season with cinnamon and vanilla extract.

Nutrition remains a personal journey. It’s essential to adapt ingredients to align with your health goals and requirements.

For more personalized dietary advice, consulting a healthcare professional is recommended.