Tannins are a naturally occurring organic compound found in many plant species, as well as some bacteria and fungi. They are most often found in the bark, leaves and fruits of plants, where they act as a defense mechanism against herbivores and pathogens.
Tannins are characterized by their ability to bind to and catalyze proteins and other organic compounds. This property gives tannins astringent and antiseptic properties, which can be useful in treating conditions such as diarrhea and skin irritations. Tannins are also used to make leather, as they can bind and maintain animal skins.
In addition to their medicinal and industrial uses, tannins have been studied for their potential health benefits. Some studies have suggested that tannins may have anti-inflammatory and antioxidant effects, which may be useful in treating conditions such as cardiovascular disease and cancer. However, more research is needed to fully understand the potential health benefits of tannins and how they interact with the body.