does coffee affect metabolism?

does coffee affect metabolism?

By Metabolismer

Coffee contains caffeine, the most commonly consumed psychotropic substance worldwide. Today, caffeine’s advantages prompt it to be used in most fat-burning supplements. It is also one of the very few substances known to absorb the fats in adipose tissue and boost metabolism.

Nevertheless, does coffee consumption really cause weight loss? This article will take a closer look at the subject. So, stay tuned.

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Coffee contains stimulants

Many bioactive substances that are found in coffee grains also exist in the coffee drink, some of which affect the body’s metabolism:

Caffeine: one of the main stimulants in coffee.

Theobromine: the main stimulant found in cocoa compounds and also in lower amounts in coffee compounds.

Theophylline: another stimulant found in coffee and cocoa which is also used in treating asthma.

Chlorogenic acid: one of the main bioactive substances in coffee compounds which slows the absorption of carbohydrates.

From among the substances mentioned above, caffeine is the most important compound, and given its high significance, it has been studied thoroughly.

Caffeine functions by blocking a neurotransmitter fiber called adenosine. Once adenosine is blocked, caffeine affects the neurons, whereby neurotransmitters such as dopamine and norepinephrine are released. Thus, it causes the consumer to feel more energetic and vigilant.

In this way, coffee helps the person to feel vibrant despite fatigue. Indeed, coffee increases the physical efficiency and functioning of the consumer by about 11-12%.

Coffee helps break down adipose tissue.

Caffeine stimulates the nervous system, whereby it sends direct signals to lipid cells, telling them to be broken down into smaller pieces.

This occurs through increases in the epinephrine hormone in the blood. Epinephrine is also known as adrenaline. This hormone in the blood moves towards adipose tissue and signals them to be broken down into smaller pieces and then released in the blood.

Nevertheless, it should be noted that releasing smaller pieces of adipose tissue in the blood does not aid weight loss if the person does not burn more calories than they consume in their diet. This is known as a negative energy balance.

You can reach this negative energy balance by eating less or exercising more. Another strategy to achieve negative energy balance is to use fat burning supplements such as caffeine. The effect of caffeine on increasing metabolism will be examined further below.

Coffee boosts metabolism

The calories a person burns at the time of rest is called the resting metabolic rate (RMR). By increasing metabolism, a person can reduce their weight more easily, and they can consume more food without gaining weight.

Research has shown that caffeine increases RMR by about 3-11%, which is more effective when consumed in higher amounts. Interestingly, metabolism is enhanced by increasing fat burning, but unfortunately, this method has been found to be ineffective for obese individuals.

Research has indicated that caffeine consumption caused fat burning to increase by around 29% in thin individuals, but only by about 10% among obese subjects. Research has further shown that the effect of caffeine on fat burning also depends on age: it is less effective among those with advanced ages compared to younger individuals.

Consumption of coffee and weight loss in the long run

Worthy of note is that people’s bodies develop resistance to the effects of caffeine consumption over time. Within a short period of time, caffeine consumption boosts the rate of metabolism and fat burning; however, after some time, the consumer’s body will become resistant to the effects of caffeine, and it will no longer help in fat burning.

Even if coffee consumption does not lead to greater calorie burning in the long run, it may still reduce your appetite and help you eat less. Research has indicated that the consumption of caffeine is effective in reducing men’s appetites, but it was not effective for women. However, other research has suggested that caffeine consumption has no effect on men’s appetite.

Generally, whether or not coffee and caffeine consumption is effective in weight loss in the long run depends on the person. Nevertheless, it is still believed that over the long run the effect of coffee consumption will fade.


Although there are other reasons for drinking coffee, one of which could be that it is a major source of antioxidants in one’s diet, you may like to drink coffee for weight loss. Although caffeine consumption can enhance metabolism in the short-term, the effects of drinking coffee in the long run will be very low because of the resistance of the body.

In order for your body not to get used to consuming coffee and its effects, it is recommended to drink coffee within specific periods; for example, you can consume coffee two weeks in your diet, and then stop it for another two weeks.

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