National Polyphenol Day is observed worldwide every July 11. It was established in 2021 by Gundry MD to celebrate the birthday of its founder, Dr. Steven Gundry, and to educate the public about the benefits of polyphenols, which are naturally occurring compounds found in plants. The day encourages individuals to incorporate more polyphenol-rich foods into their diets, such as dark-colored berries, cocoa, tea, and red wine. Participants can celebrate by learning about the health benefits of polyphenols, sharing information with others, and using the hashtags #NationalPolyphenolDay and #PolyphenolDay on social media. Polyphenols are known for their antioxidant properties and potential health benefits, including improved brain function and reduced cancer risks.