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Health Canada has not developed advice for adolescents because of insufficient data. However, they suggest that daily caffeine intake for this age group be no more than 2.5 mg/kg body weight. This is because the maximum adult caffeine dose may not be appropriate for light-weight adolescents or for younger adolescents who are still growing.
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.
The FDA’s recommendations regarding daily caffeine consumption for adults are uncomfortably noncommittal. Their 2023 report states that 400 milligrams a day is “an amount not generally ...
Too much caffeine can cause side effects, such as insomnia, jitters and upset stomach. ... the majority of healthy adults can drink 400 milligrams worth of caffeine a day and be fine, Hunnes says ...
Caffeine-induced anxiety disorder is a subclass of substance- or medication-induced anxiety disorder. [35] Populations that may be most impacted by caffeine consumption are adolescents and people with anxiety disorders. [36] Preliminary research indicated the possibility of a beneficial relationship between coffee intake and reduced depression.
For instance, if the ADI is based on data from humans the safety factor is usually 10 instead of 100. The ADI is usually given in mg per kg body weight. [5] The ADI is considered a safe intake level for a healthy adult of normal weight who consumes an average daily amount of the substance in question.
8-ounce cup of drip coffee. 95–200 milligrams (robusta coffee beans contain about twice as much caffeine as arabica). 1-ounce espresso shot. 60–65 milligrams. 12-ounce can of Coke. 34 milligrams
According to a 2020 study in the United States, coffee is the major source of caffeine intake in middle-aged adults, while soft drinks and tea are the major sources in adolescents. [8] Energy drinks are more commonly consumed as a source of caffeine in adolescents as compared to adults. [8]