![]() ![]() Tea varietiesīlack, green, and white teas are prepared from leaves of the same plant, Camellia sinensis. Therefore, 1 cup (237 ml) of brewed coffee generally has more caffeine than a cup of tea. Typically, you also use more coffee beans than you’d use tea leaves for a drink ( 12). However, the coffee brewing process uses hotter water, which extracts more of the caffeine from the beans. ![]() Tea leaves contain 3.5% caffeine, while coffee beans have 1.1–2.2%. The amount of caffeine in tea or coffee can vary significantly depending on the origin, type, and preparation of the drink ( 11). It’s associated with many health benefits, but consuming too much of it may raise some concerns.Ĭaffeine content varies by beverage type and preparation SummaryĬaffeine is a popular stimulating compound found in many foods and drinks, including coffee and tea. ![]() In addition, some studies suggest that drinking it regularly, even in moderate amounts, can cause chronic headaches and migraines ( 8, 9, 10).įurthermore, caffeine is considered mildly addictive, and some people may be more susceptible to developing a dependence ( 9). In large doses, caffeine has been associated with anxiety, restlessness, and difficulty sleeping. That said, consuming high amounts - such as single doses over 500 mg - may raise some concerns ( 2, 3). Department of Agriculture (USDA) and European Food Safety Authority (EFSA) define a safe caffeine intake as up to 400 mg per day, 200 mg per single dose, or 1.4 mg per pound (3 mg per kg) of body weight ( 1, 2, 3).ĭue to its stimulating effects, caffeine has been linked to health benefits like enhanced alertness, improved athletic performance, elevated mood, and increased metabolism ( 4, 5, 6, 7). An estimated 80% of the world’s population enjoys a caffeinated product daily.īoth the U.S. ![]()
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