Dr. Rhonda Patrick(@foundmyfitness):I don't add bananas to my smoothies. Why? Not because bananas are bad (I love bananas). They contain polyphenol oxidase, an enzyme that can break down polyphenols. And studies suggest that when you add banana to a blueberry smoothie, you may absorb fewer of the beneficial polyphenols from the berries! So instead, I use avocado. It gives the smoothie the same creamy texture with the bonus of monounsaturated fat in avocado, which can increase absorption of carotenoids like lutein and zeaxanthin from kale - nutrients important for eye and brain health. I talked about this recently on my appearance on The Mel Robbins Podcast.

2026.07.20 17:32

I don't add bananas to my smoothies. Why? Not because bananas are bad (I love bananas). They contain polyphenol oxidase, an enzyme that can break down polyphenols. And studies suggest that when you add banana to a blueberry smoothie, you may absorb fewer of the beneficial polyphenols from the berries! So instead, I use avocado. It gives the smoothie the same creamy texture with the bonus of monounsaturated fat in avocado, which can increase absorption of carotenoids like lutein and zeaxanthin from kale - nutrients important for eye and brain health. I talked about this recently on my appearance on The Mel Robbins Podcast.

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