Polyphenols are a large class of plant-derived chemical compounds that have antioxidant properties. They are found in many fruits, vegetables, grains, nuts, seeds, and beverages such as tea, coffee, and wine. Polyphenols contribute to the protection of plants from ultraviolet radiation and infections, and in the human body, they play an important role in the prevention of various diseases due to their antioxidant, anti-inflammatory, antiviral, and anti-cancer effects.

There are different classes of polyphenols, including flavonoids, stilbenes, lignans, and phenolic acids, each with a unique structure and specific biological properties. Scientific studies show that regular consumption of foods rich in polyphenols may reduce the risk of heart disease, type 2 diabetes, certain cancers, and neurodegenerative diseases.