1/31/2024 0 Comments Coke vs diet coke caffeine![]() ![]() If you want to know more about your tolerance, speak to your medical provider. If you have anxiety, panic disorder, heart arrhythmia, high blood pressure, diabetes, or other medical conditions, you may tolerate less caffeine. It’s also important to realize that medical conditions can affect sensitivity to caffeine. ![]() Those who drink coffee every day can tolerate much more than those who drink it rarely. Your acquired tolerance is also very important. Some people can drink coffee and go to sleep immediately, while others are kept awake throughout the night.ĭepending on your genetic makeup, you may tolerate a lot of caffeine - or very little. The effects of caffeine on sleep are also genetically determined. These genes affect the enzymes that break down caffeine in your liver, as well as receptors in your brain that are affected by caffeine. Many genes have been discovered that affect people’s sensitivity to this stimulant ( 9, 10). Many sources recommend 400 mg of caffeine per day as the safe upper limit for healthy adults.Ĭaffeine affects people in different ways. The caffeine content of your morning joe can range from 50 to over 400 mg. Keep in mind that many other sources of caffeine exist, including tea, soft drinks, energy drinks, chocolate, and certain medications ( 6, 7). However, many people drink much more than that without any issues. Several sources suggest that 400 mg of caffeine per day - the equivalent of 4 cups (945 ml) of coffee - is safe for most healthy adults ( 3, 5). ![]() Caffeine, an active ingredient in coffee, is the most commonly consumed psychoactive substance in the world ( 4).Ĭoffee’s caffeine content is highly variable, ranging from 50 to over 400 mg per cup.Ī small home-brewed cup of coffee could provide 50 mg, while a 16-ounce (475-ml) Starbucks grande packs over 300 mg.Īs a general rule, you can assume that an average 8-ounce (240-ml) cup of coffee offers around 100 mg of caffeine. ![]()
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