How long does caffeine last? Tell me if it will hold you up

Caffeine stays in your system longer than you think. The half-life of caffeine অর্থাৎ that is, the time it takes for the body to process only half সাধারণত usually varies from about five hours, but can vary from one to nine hours, says Meredith Broderick, MD, neurologist and sleep specialist.

Most caffeine (i.e., the instant-release thing) is completely absorbed 45 minutes after eating, but does not leave the body for a while. According to Kogan, it can take up to 10 hours for caffeine to be fully metabolized.

Less common, enhanced varieties of caffeine deliberately prolong the release of caffeine over time, maintaining its levels in the blood and its benefits, while buffering against horrific “crash” events. This means that you want to take it before the day, so the strong effects do not bleed into your night routine.

As you can imagine, not everyone metabolizes caffeine in the same way, which makes a difference in a person’s experience. Caffeine sensitivity depends on age, gender, genetic makeup and environmental factors (e.g., whether the person smokes or is pregnant), Broderick shares.

As mentioned, your genes also have a profound effect on your sensitivity to caffeine. “Variations in the CYP1A2 and AHR genes have been shown to affect how fast the body metabolizes caffeine. Studies have also shown that people with different ADORA2A genes experience stronger caffeine effects and longer longevity, ”Kogan notes.

A classic eight-ounce cup of coffee contains about 96 milligrams of caffeine. But to be honest, most of us are more likely to eat 16 ounces of distilled coffee or cold brew, which contains twice as much caffeine. A 2018 review says that the average American adult consumes about 200 milligrams of caffeine per day, confirming this estimate.

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