How long does the effect of coffee last?

In this brief guide, we are going to answer the question “how long does the effect of coffee last” with an in-depth analysis of the time it takes for the effect of caffeine to last in your body. Moreover, we are going to discuss the time it takes for the coffee to kick in and the chemistry lying behind the metabolism of coffee in the body along with the factors that affect caffeine metabolism.

So without much ado, let’s dive in and figure out more about it.

How long does the effect of coffee last?

Caffeine, the main constituent of the coffee has a half-life of about 5 hours in an average adult body according to the stats provided by the American Academy of Sleep Medicine. This means that half of the caffeine, as well as half of its effect, is gone within the first 5 hours. So it is just fair to say that the effect of coffee lasts for hours in the body and it can take about 10-12 hours for the body to completely get rid of the caffeine from the bloodstream.

One thing to keep in mind is that there is a direct relation between the amount of coffee you are utilizing and the time for which its effect lasts. If you are taking a higher dose of caffeine then it will remain in your system for a long and subsequently, its effect will last for a longer time.

How long does it take for coffee to work?

The caffeine present in the coffee starts working very quickly as it can easily pass the epithelial layer lining the mouth, throat, and stomach to reach the blood. So it takes about 30-60 minutes for the caffeine present in the coffee to reach its peak level and provide you with a surge of energy. 

Understand the metabolism of caffeine in the body

So when we drink coffee, the caffeine present in the coffee goes all the way through our gastrointestinal system to the liver where it is metabolized by a set of enzymes. Now the time it takes for the body to metabolize caffeine directly depends upon the amount of the enzymes that are present in the liver. The higher the number of enzymes is, the quicker the liver will metabolize the caffeine. 

The amount of these liver enzymes is controlled directly by the genes, so the person that has a higher amount of liver enzymes present naturally will metabolize the caffeine rather fast as compared to the person who has less of these liver enzymes.

So for the slow-metabolizers of caffeine, the effect of caffeine lasts for longer as they will slowly and gradually metabolize the caffeine content of the coffee.

What are the other factors that can affect the metabolism of caffeine in your body?

So there are a number of other factors other than the liver enzymes like the substances you consume, or the chemicals that find their way inside your body that affect the rate of metabolism of the caffeine in your body. 

For instance, for a smoker, the half-life of caffeine is shorter than for a non-smoker. The half-life of caffeine for smokers is about 3 hours. Thus the effect of coffee will last for a shorter time interval in smokers as compared to the non-smokers.

On the other hand, the hormonal birth control pills can slow down the process of caffeine metabolism in your body, thus prolonging the time that it takes for the effect of caffeine present in the coffee to last.

How does caffeine affect the body?

Caffeine increases the cortisol and adrenaline secretion in the body that results in increased heart rate, breathing rate, and mental alertness. Moreover, it also helps you to focus and stay awake by stimulating your nervous system. 

How much caffeine is present in coffee?

Different varieties of coffee differ in their caffeine content. For instance, an 8-ounce cup of coffee contains about 95-165 mg of caffeine depending upon how strong it was. As the decaffeinated coffee has most of its caffeine part eliminated, therefore, it has only 2-5 mg of caffeine in the 8-ounce cup while 1-ounce espresso has somewhat 47-64 mg of caffeine present in it.

One thing that you should always remember is that the more roasted the coffee beans are, the more will be their caffeine content. 

How much caffeine can I consume daily?

As the excessive intake of coffee or tea can increase your overall caffeine intake that can cause some health problems like bloating, gas, etc., therefore, it is recommended to limit your daily caffeine intake to 300 mg.

Conclusion

In this brief guide, we answered the question “how long does the effect of coffee last” with an in-depth analysis of the time it takes for the effect of caffeine to last in your body. Moreover, we discussed the time it takes for the coffee to kick in and the chemistry lying behind the metabolism of coffee in the body along with the factors that affect caffeine metabolism.

Citations

https://blog.prepscholar.com/how-long-does-caffeine-stay-in-your-system

https://www.healthline.com/health/how-long-does-caffeine-last

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Mahnoor Asghar is a Clinical Nutritionist with a bachelor's degree in Nutrition and Dietetics. She is compassionate and dedicated to playing her part in the well-being of the masses. She wants to play a fruitful role in creating nutrition and health-related awareness among the general public. Additionally, she has a keen eye for detail and loves to create content related to food, nutrition, health, and wellness.

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