Catechin is a type of flavonoid, a natural compound found in various plants, particularly in green tea. It is known for its antioxidant properties, which help protect cells from damage caused by free radicals. Catechins are also linked to several health benefits, including improved heart health and enhanced metabolism. In addition to green tea, catechins can be found in other foods such as dark chocolate, berries, and certain fruits. Research suggests that consuming catechin-rich foods may contribute to better overall health and may play a role in reducing the risk of chronic diseases.