Catechins are bioactive compounds that exhibit a variety of biological activities. They are abundant in certain foods like green tea, cacao, and berries. The most studied catechins include epicatechin, epicatechin gallate, epigallocatechin, and epigallocatechin gallate (EGCG). These compounds have been linked to numerous potential health benefits, such as antioxidant, anti-inflammatory, and anti-cancer effects.