Black Tea (Camellia sinensis, fully oxidized)
How caffeine, catechins and L-theanine compare per cup, black tea benefits for heart health and alertness, and side effects.
Encyclopedia
Teas & Beverages
Functional beverages — matcha, green tea, yerba mate, rooibos, kombucha, cacao — profiled with catechin/polyphenol content and cardiometabolic evidence.
Green Tea (Camellia sinensis, unoxidized)
Does green tea have caffeine? Yes, about 24 mg per cup. How it compares with black tea and matcha, and the evidence on weight loss, blood sugar and heart.
Matcha Green Tea (Camellia sinensis, powdered)
Is matcha good for you? Matcha caffeine (38–88 mg a serving), EGCG and L-theanine, how it compares with green tea, the evidence on focus, and safety.
