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The Dangers of Drinking Too Much Coffee

We all know how much caffeine can affect you if you’re drinking too much coffee. But have you ever thought about just how unhealthy it can really be? In this article, we’ll talk about some of the health risks of drinking too much coffee. Youn will learn:

  • What coffee can do to your heart
  • Coffee and sleep: what’s the connection?
  • Coffee and cancer
  • Other surprising ways coffee affects your health

Let’s get learning!

Dangers of too much coffee

Coffee and your health

For many people, it is simply indispensable: A cup of coffee in the morning or at noon wakes you up and lifts your spirits. In addition, coffee also has many positive effects on health. For example, one study suggests that three cups of coffee a day can cut your risk of developing kidney cancer by about half.

Coffee has many positive effects on health. But coffee drinkers shouldn’t overdo it – otherwise, it will do more harm than good. These six physical symptoms show that you are drinking too much coffee.

Can you drink too much coffee?

All the benefits of coffee don’t mean that you should drink as many cups of coffee as you want every day. If you drink too much coffee, you can even damage your health!

Coffee, for example, is considered to steal minerals: Each cup mainly removes calcium and magnesium from the body. Anyone who drinks a lot of coffee should therefore compensate for the loss of minerals. Calcium is found in many dairy products like cheese and yogurt, while magnesium is found in foods like oranges and brown rice.


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How much coffee can I drink safely?

Studies show that adults can easily tolerate up to 400 milligrams of caffeine daily. For comparison: a cup of coffee contains around 80 to 120 milligrams of caffeine. Drinking up to four cups a day is considered generally harmless. However, this is only a guideline: our body often shows us when we drink too much coffee.

Symptoms of drinking too much coffee

You are constantly over-excited

The caffeine in coffee not only stimulates the central nervous system but it also ensures that a stimulating mix of adrenaline, dopamine, and glutamate is released in our body. This can lead to an increased heart rate, nervousness, or even outbursts of anger.

You regularly plunge into a form of depression

No question about it – the good thing about coffee is that it wakes us up quickly and therefore makes us more productive. However, you should reconsider your consumption if you regularly fall into a form low as soon as the coffee effects wear off. Not only does this make you feel exhausted and tired, but it also makes you feel less productive.

You have to go to the toilet all the time

One problem that particularly affects irregular coffee drinkers: they have to go to the toilet more often. If your bladder reports about every hour when you drink a lot of coffee, you should limit your consumption a little and observe how that affects you.

Dangers of too much coffee

You have to poop more often

According to studies, coffee has a laxative effect on many people. Scientists, however, are still unsure what exactly triggers this effect. It is believed that this is due to a combination of the acidity in coffee and its ability to stimulate the intestines.

How often you have to go to the toilet differs from person to person: While some people have bowel movements twice a day, others only have to have one once every three days without this having any health consequences.

Frequent bowel movements due to coffee consumption are usually only of concern if diarrhea occurs – this should be treated accordingly and consumption reduced.

Your eyelid keeps twitching

The fact that an eyelid begins to twitch often comes out of nowhere. According to the National Institutes of Health, caffeine is one of the main triggers. It activates the release of the hormones serotonin and the neurotransmitter norepinephrine, which can increase the ability of muscles and nerves to react.

Your sleep pattern is mixed up

Many people underestimate how long coffee can keep us busy: the hot drink can keep us awake for up to six hours and thus disrupt our sleep rhythm. But coffee not only prevents us from falling asleep – it can also reduce the quality of sleep itself and ensure that we feel as if we are exhausted the next morning.

Dangers of too much coffee

What to do if you drink too much coffee

If you suffer from one or more of these symptoms, it may be useful to limit your coffee consumption and see whether the symptoms subside. However, you shouldn’t stop consuming it overnight – especially not if you are a heavy coffee drinker. Because if you drink between six and eight cups a day, you not only consume too much coffee but are also more irritable if you don’t get any coffee in one day.

Many sufferers also report frequent headaches if they abstain completely. According to experts, this effect has nothing to do with the fact that coffee is addictive – it is more likely to be triggered because the habit is absent. Coffee is not referred to as an addiction because the dose does not have to be increased further and further, as is the case, for example, with drug use.

Drank too much coffee – what now?

If you discover that you have drunk too much coffee, you need to limit the consumption of the hot beverage. If you notice the first signs, you should act immediately:

At this point do not continue to drink coffee or any other caffeinated beverage. Rather use water and allow yourself some rest. If the symptoms persist, you should ask a doctor for advice. In this case, the symptoms may be due to another cause.
It is also important to limit coffee consumption in the long term. You can do this by consuming a little less caffeine every day. Gradually reduce the cups until you’ve turned the coffee down to healthy levels.

It is also possible to do without coffee entirely. Test this out for four weeks and see if it makes you feel better. If the symptoms go away completely, it is likely that you have indulged in too much coffee over a long period of time. Coffee withdrawal in the form of detoxing can help.

Alternatives to classic coffee

Have you already reduced your coffee consumption and are now looking for a worthy replacement for breakfast or a piece of cake? We have some ideas for you:

  • Decaf coffee: A good alternative is decaffeinated coffee. This contains only very small amounts of caffeine that do not trigger any of the above symptoms. It can also be very helpful during pregnancy, for example.
  • Matcha tea is also a useful substitute for coffee. This is a natural wake-up call that can also shine with health benefits.
  • Energy drinks: Do you consume coffee to start the day with more energy? A homemade energy drink made from coconut water and green tea contains only a fraction of the caffeine in coffee, but is just as much fun.


Coffee can be good for your health if you don’t consume too much of it. If you stay below an amount of up to 400 milligrams (maximum of four cups) of coffee per day, this is considered harmless. However, since everyone reacts differently to caffeine, it is difficult to make general statements.

We have explained the most common symptoms of increased coffee and caffeine consumption and their causes:

  • Inner restlessness, nervousness and anxiety due to the irritation of the nerves.
  • Heart racing and palpitations because the caffeine in coffee makes the heart beat faster.
  • Breathing problems, such as shortness of breath, which is due to high blood pressure.
  • Eye twitching caused by irritation of the nerves.
  • Migraines and headaches, as coffee affects the vascular tone.
  • Stomach problems caused by the bitter substances in coffee.

Noted other problems associated with drinking coffee? Share them in comments!