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Frequently Asked Questions About Caffeine Metabolism

Does Caffeine Boost Metabolism?

Studies show that caffeine can boost a person’s metabolism, with figures suggesting increases between 10% and 29%. Obese people enjoy less increase, with lean people gaining the most benefits, while it is younger people that get the greatest gains from the stimulant.

How Long Until Caffeine Is Completely Out Of Your System?

Caffeine has a half-life between four and six hours, so this long after consuming it, half of the amount will still remain. In total, it can take up to 10 hours before it completely leaves your system.

Does Vitamin C Counteract Caffeine?

If you’ve consumed too much caffeine or are having an adverse effect to caffeine, you may be looking for ways to counteract its effects. Unfortunately, vitamin C has not been shown to have any effects in combating caffeine. Experts suggest taking a walk to help alleviate symptoms of anxiety and drinking plenty of water to stay hydrated and encourage the liver to break down the caffeine.

What Enzyme Breaks Down Caffeine?

The liver is primarily responsible for breaking caffeine into three constituent components: paraxanthine, theobromine, and theophylline, and it is the cytochrome P450 1A2, or CYP1A2, that is responsible for breaking it down.



Caffeine is often said to be the most widely consumed drug in the world, because of its stimulant effects and its mass consumption. It is generally considered safe, at least in moderation and for otherwise healthy adults, and there are studies linking its consumption to improved weight gain and increased energy levels. Coffee is the most common method of consuming caffeine, although it can also be found in sodas, other hot beverages, and in some gum, tablets, and powders. While coffee itself has very few calories, you should take note of any additives that you include in coffee drinks, such as milk and sugar, if you are looking to lose weight.


Source: Kate MacDonnell - coffeeaffection.com/author/kate-macdonnell

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