The Relationship Between Coffee and Hunger

There are facts that show that our hunger and appetite are controlled by complex systems and are affected by what we eat or drink (including coffee). Read below about what scientists found with the relationship between coffee and hunger.
The Relationship Between Coffee and Hunger

Last update: 15 December, 2022

A group of researchers have wondered if drinking coffee makes us more or less hungry. Find out the relationship between coffee and hunger in the following article. The results will surprise you!

Facts show that our hunger and appetite are controlled by complex systems and are affected by what we eat or drink (including coffee). A group of scientists wanted to discover if the most popular drink in the world also has an impact on our hunger.

Many people use coffee to control their appetite. It’s true that coffee gives you a good amount of energy and makes you more alert. It even improves physical performance and suppresses appetite. So, it shows that coffee and hunger have a pretty clear relationship. However, there are studies that show that if you want to lose weight, it’s best to drink decaffeinated coffee. Don’t like decaf? Experts on the subject also state that in order to lose weight, it’s good to drink green tea extract.

Learn about different teas to help with weight loss: 5 Delicious Teas That Will Help You Lose Weight

Cup of coffee, cookies, coffee grounds, and cinnamon sticks

Be careful to not drink too much coffee because it can influence your ability to rest when needed.

So, is coffee healthy? It depends. Not everyone metabolizes coffee in the same way. What you do have to know is that this drink modifies your neurotransmitters and hormones (especially cortisol and insulin). That is why coffee “wakes up” some people and puts others “to sleep”. This can change according to how much you drink, the time of day, your age, your physical build, etc.

Does coffee make you hungry?

Your hormones influence your appetite and satisfaction. For that reason, you may be more hungry at certain times of the day more than others. Women, for example, eat more when they are hungry or during their periods. Men may eat more when they are under a lot of pressure or stress.

Cup of coffee on a table

There are three hormones in charge of hunger: ghrelin, leptin, and peptide YY. The first is secreted in the stomach, the second is synthesized in fat cells, and the third is found in the intestine.

Can coffee really help you lose weight? Researchers think they can be correlated because the caffeine modifies the production of each three hormones. The same thing happens with your mood. Have you ever noticed that when you are hungry, you get mad or short-tempered, but after you eat, you are happy? Remember the popular saying: “a full stomach makes for a happy heart.”


Researchers have considered two hypotheses to find out what the relationship is between coffee and hunger:

  • Hypothesis #1: coffee (decaffeinated or caffeinated) reduces hunger, leptin, and ghrelin and increases satisfaction and peptide YY.
  • Hypothesis #2: The same effects as in the first hypothesis, but with the exception that they only last for 60 minutes after eating or even during the 120 minutes the body takes to digest.
Steaming cup of coffee: is it related to hunger?


A group of volunteers drank coffee and then explained their feelings for the next three hours. The conclusions they came to about the relationship between coffee and hunger are:

  • While caffeine is used to suppress appetite, decaffeinated coffee caused the lowest levels of hunger (along with the two hormones) and an increase in peptide. More amounts of peptide YY means less hunger.
  • The people that did the experiment stated that they didn’t have an appetite for three hours, however,  their levels of PYY reduced after an hour and a half.
  • The reduction of hunger and the increase in peptide stayed the same until after consuming glucose. What can be assumed from this is that some of the components of coffee do not modify digestion.

Perhaps the reason why coffee takes away hunger is that it can modify the satisfaction hormone.

It is worth mentioning that coffee has a lot of antioxidants, which are beneficial for your health. However, some of the components are negative for certain people, especially if they drink too much of it. If you are “trusting” caffeine to suppress your appetite, you should start to consider another option.

You can try drinking decaffeinated coffee and eating other healthier foods. For some people this is an apple, for others a cereal bar; some like bananas, and others go for a tomato.

Try to remember that there are other factors that make you hungry. For example, a deficient breakfast that doesn’t include fruits, dairy products, and grains can lead to more hunger. Also, when your stomach is used to eating at any time (snacking), when you’re bored or lacking motivation, having anxiety or stress, and when there hormonal or gland changes (pregnancy, menstrual period, thyroid problems)can all be causes of an increase in hunger.
You cannot expect coffee to be a magical solution for your appetite. If you don’t eat properly every day, it is more likely that your stomach asks for more and more food.

This text is provided for informational purposes only and does not replace consultation with a professional. If in doubt, consult your specialist.