Green tea leaves are rich in polyphenols, especially catechins (EGCG), as well as caffeine and L-theanine, providing many health benefits. Tea has strong antioxidant effects, helps protect cardiovascular health, and supports lower cholesterol and blood pressure. It also helps strengthen immunity, supports cancer prevention, and improves brain function. In addition, green tea helps cool the body, support digestion, promote urination, improve skin condition, reduce stress, and may support weight control.