Researchers found that compounds in black and green tea leaves acted like “little Velcro ... pointed out that tea had been used in China for medicinal purposes for thousands of years.

Workers process tea leaves at a tea company in Sanjiang Dong autonomous county, South China's Guangxi Zhuang autonomous region, March 22, 2025. [Photo/Xinhua] ...

"Black tea leaves are an excellent source of polyphenols ... Form: Iced tea sachets | Servings per container: 16 sachets (8 servings each) | Origin: China | Type: Chinese Keemun Black Tea There's ...