Revered for its taste and aroma around the world, coffee is consumed for its stimulating effects, which increases energy levels, mood, and alertness ( 1, 2). Here are 10 common foods and drinks that contain caffeine.Ĭoffee is a brewed beverage prepared from coffee beans, which are a natural source of caffeine ( 1, 2, 3). This is especially important to watch out for if you tend to experience negative side effects when you consume caffeine. These side effects include heart palpitations, anxiety, insomnia, and increased blood pressure and heart rate ( 1).īecause manufacturers add caffeine to some foods and drinks to promote increased energy, alertness, and mood, you may be consuming more caffeine than you think ( 1, 2).
However, studies have observed mixed results, and some people may experience negative side effects at intakes of less than 400 mg per day ( 2, 4). One review study showed that 300 mg of caffeine per day in healthy pregnant women is safe, with limited data suggesting that 1.1 mg of caffeine per pound (2.5 mg per kg) of body weight in children and adolescents may be safe ( 2). Consuming up to 400 mg of caffeine per day has not been associated with adverse health effects in healthy adults ( 1, 2, 3). The Food and Drug Administration (FDA) generally recognizes caffeine as safe. The term “psychostimulant” means that it increases the activity of the nervous system ( 1, 3). Caffeine is the most commonly consumed psychostimulant substance in the world.
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