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Experts generally agreed that although coffee is safe ... The Food and Drug Administration recommends people cap their daily caffeine intake at 400 milligrams, or about four or five 8-ounce cups ...
According to the FDA, most adults should stick to a daily caffeine limit of 400 milligrams, meaning a drink like Celsius consumed before a workout gets you halfway to your recommended max dose.
Studies have connected youth caffeine consumption to long-term health issues. ... “most healthy teens can safely consume up to 100 milligrams of caffeine daily,” which basically amounts to 24 ...
The health effects of coffee include various possible health benefits and health risks. [1]A 2017 umbrella review of meta-analyses found that drinking coffee is generally safe within usual levels of intake and is more likely to improve health outcomes than to cause harm at doses of 3 or 4 cups of coffee daily.
In fact, the FDA estimates toxic effects, like seizures, can be observed with rapid consumption of around 1,200 milligrams of caffeine, or 0.15 tablespoons of pure caffeine.
High caffeine consumption in energy drinks (at least one liter or 320 mg of caffeine) was associated with short-term cardiovascular side effects including hypertension, prolonged QT interval, and heart palpitations. These cardiovascular side effects were not seen with smaller amounts of caffeine consumption in energy drinks (less than 200 mg). [79]
The FDA recommends most people limit their daily caffeine intake to no more than 400 mg of caffeine per day. One 8 fluid ounce cup of brewed coffee has around 96 mg of caffeine.
The risk was reduced by 48.1% if they had three cups a day, or 40.7% if they had 200 to 300 milligrams of caffeine daily, compared with people who didn’t drink or drank less than one cup, Ke said.