What is tannin's in the cacao leaves?

Tannins in cacao leaves are polyphenolic compounds that contribute to the astringent taste and potential health benefits of the plant. They play a role in plant defense against pests and pathogens by inhibiting their growth. In addition to their protective functions, tannins may have antioxidant properties, which can be beneficial when consumed. However, excessive tannin intake can also interfere with nutrient absorption in humans.