Despite caffeine's poor reputation, a 2017 systematic review in Phytomedicine revealed that caffeine and l-theanine in green tea lower anxiety and improve cognition including concentration and memory.
Green tea is rich in antioxidants, which lower oxidative stress and inflammation, which can raise cancer risk. Antioxidant-rich polyphenols make about 30% of green tea. Green tea lowers the risk of breast, prostate, and colorectal cancer.
US type 2 diabetes is one of the most common diseases, with 1.4 million new cases annually. Diabetes affects 1 in 10 Americans, and 96 million persons over 18 have prediabetes.
Green tea's caffeine stimulates fat burning, according to study. Caffeine may help lose weight, fat, and body mass index, according to a 2019 Critical Reviews in Food Science and Nutrition assessment of multiple randomized controlled studies.
Green tea is rich in flavonoids, which are found in fruits, vegetables, and tea! Flavonoids reduce inflammation, cholesterol, and more, improving heart health. The polyphenol (antioxidant) catechins in green tea also reduce blood pressure, according to a 2014 Scientific Reports meta-analysis.