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Sodas also vary in caffeine content, but typically a 12-ounce serving will have 3 milligrams to 70 milligrams of caffeine. Other drinks I want to be sure to flag are energy drinks.
Connor warns that caffeine in quantities of 1,200 mg, especially if consumed in a short time frame, can be “toxic and lead to severe side effects such as seizures.”
“Combining sugar with caffeine can create a stress response, spiking blood pressure and heart rate. Over time, these factors contribute to inflammation, plaque formation and an elevated risk of ...
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 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.
Caffeine dependence can cause a host of physiological effects if caffeine consumption is not maintained. Withdrawal symptoms may include headaches, fatigue, difficulty concentrating, lack of motivation, mood swings, nausea, insomnia, dizziness, cardiac issues, hypertension, anxiety, backaches, and joint pain; these can range in severity from mild to severe. [18]
Research indicates that caffeine, ingested either by drinking coffee or by taking a caffeine supplement, can help improve memory, explains Brynna Connor, M.D. “There is also evidence that shows ...
Dasgupta notes that the average adult can handle up to 400 mg of caffeine a day without encountering health issues. “Too much caffeine, though, can lead to jitters, trouble sleeping, a racing ...