Can coffee cause anxiety? Read how caffeine links to palpitations, shakiness and restlessness, the role of strong tea, and how to cut back without giving up.
Two cups of filter coffee in the morning as you rush to work, a Turkish coffee after lunch, glass after glass of strong tea in the afternoon meeting. By late afternoon you notice that your hand is trembling slightly, your heart has sped up and there is a restlessness inside you that you cannot quite describe. The first thing that comes to mind is "Is something wrong with my heart?" or "My anxiety has flared up again." But what if a large part of this feeling is coming from your cup? Can coffee cause anxiety? This is a question often asked by people who struggle with palpitations and restlessness. The answer is not as simple as "yes, for everyone" or "it has nothing to do with it". Rather than creating anxiety out of nothing, caffeine makes an existing alarm system easier to set off. In this article we look at what caffeine does in the body, why it gets confused with anxiety, who is more sensitive to it and ways to strike a balance without removing coffee or tea from your life.
Can Coffee Cause Anxiety? What Caffeine Does in the Body
Caffeine is the most widely used stimulant in the world. Throughout the day, a substance builds up in our brain that creates a feeling of tiredness and prepares us for sleep. Caffeine temporarily blocks the effect of this substance, making us feel more awake and more alert. That "I've come back to life" effect of the morning coffee comes from here.
However, caffeine does not only suppress tiredness; it also raises the body's general level of arousal. The heart may beat faster, blood pressure may rise briefly, muscles may become tenser and stomach acid may increase. In small and moderate amounts these changes remain mild for most people, and are even experienced as a pleasant sense of liveliness. As the amount increases, or when a person is sensitive, this liveliness can turn into restlessness and tension.
The effect of caffeine begins shortly after drinking it and can last for hours. That is why a coffee drunk in the afternoon may still be active in your body when you get into bed in the evening. Disrupted sleep then means waking up the next day with a mind more open to anxiety. In this way, caffeine can feed anxiety both directly and indirectly, through sleep.
It would not be right, after reading all this, to see coffee as an enemy either. When consumed in moderation, coffee is for many people a social pleasure that supports attention and energy. The conversation and relaxation that come with a Turkish coffee shared with a friend is also a form of connection that is good for mental health. The issue is not coffee itself but the balance between quantity, timing and the individual's sensitivity.
Caffeine or Anxiety? Why Do the Symptoms Get Mixed Up?
The symptoms created by too much caffeine and the physical symptoms of anxiety are almost identical:
- Palpitations, or feeling your heart beating fast
- A slight trembling in the hands
- Inner unease, being unable to keep still
- Sweating, hot flushes
- Nausea, heartburn
- Dizziness, light-headedness
- Difficulty falling asleep
- Scattered attention, racing thoughts
When the body produces these symptoms, the mind searches for an explanation. For someone prone to anxiety, the easiest explanation is usually the dangerous one: "Why is my heart beating like this? Is something happening?" This thought increases the anxiety, and the anxiety increases the physical symptoms. In this way, a small flutter that started with caffeine can turn into a huge wave of fear within a few minutes.
This cycle is especially important for people who have had panic attacks. The tendency to interpret bodily sensations as a catastrophe can lead to perceiving caffeine-induced palpitations as the start of an attack. Clinical observations also show that people with panic disorder can be more sensitive to high amounts of caffeine. We discuss this cycle in more detail in our article on panic attack symptoms. If you are curious about how stress-related palpitations are experienced, you can also look at the topic of heart palpitations and stress.
An important note here: if you are experiencing symptoms such as palpitations, chest pain or breathlessness for the first time, or experiencing them often, do not brush them off as "it's the caffeine" or "it's anxiety". Physical causes such as heart or thyroid problems first need to be assessed through a medical examination.
Who Does It Affect More? Caffeine Sensitivity
The same cup of coffee may give one person only mild alertness while leaving another restless for hours. Reactions to caffeine vary greatly from person to person. Some of the factors that create this difference are as follows:
Individual metabolism: Some people's bodies process caffeine quickly, others slowly. In those who process it slowly, the effect lasts longer and is felt more intensely. Part of this is related to inherited traits.
Predisposition to anxiety: A nervous system that is already on alert reacts more quickly to the extra arousal caffeine adds. People with anxiety disorders may notice the physical effects of caffeine more intensely.
Pregnancy and hormonal periods: During pregnancy, caffeine is cleared from the body more slowly; doctors generally recommend limiting consumption during this time. Sensitivity can also change at certain stages of the menstrual cycle.
Sleep and hunger: Coffee drunk after a sleepless night, or on an empty stomach, can hit much harder than expected.
Age: Reactions to caffeine can change with age; someone who slept easily after an evening coffee when they were young may notice in later years that the same cup disturbs their sleep. In teenagers, on the other hand, the same amount can have a stronger effect because the body is smaller.
Medication and health conditions: Some medicines can increase or prolong the effect of caffeine; thyroid problems and heart rhythm disorders also affect sensitivity. If you take medication regularly, it is important to discuss your caffeine intake with your doctor.
Caffeine in Turkey: Not Just Coffee, but Strong Tea Too
Many people who say "But I don't drink coffee" do not count the tea they drink throughout the day. Yet tea contains caffeine too, and in Turkey tea is not drunk in small quantities. Three glasses at breakfast, the glasses offered all day long at work, finishing off the teapot in front of the television in the evening... A single small tulip-shaped glass of tea may contain less caffeine than a cup of coffee; but once you reach ten glasses, the total is far from small. And the stronger the tea is brewed, the more caffeine it contains.
When you add the caffeine in energy drinks, cola, dark chocolate and some painkillers, the daily total rises without you noticing. Among young people preparing for the YKS or KPSS (Turkey's university entrance and public sector staff selection exams) in particular, consuming energy drinks and coffee together to study late at night is becoming increasingly common. When these young people experience intense palpitations, sleeplessness and an inability to focus in the weeks before the exam, it becomes hard to tell how much comes from exam anxiety and how much from the caffeine in their glasses.
In open-plan offices and corporate towers, coffee has become almost a work ritual. Let's say someone in the middle of an intense project drinks four large filter coffees between nine in the morning and six in the evening. When they get into bed at night their mind will not stop, they wake up tired in the morning, and they reach for coffee again to shake off the tiredness. In this cycle caffeine becomes a tool that both disrupts sleep and masks the fatigue caused by the disrupted sleep. The physical symptoms of anxiety also keep growing within this tangle.
Finding Your Own Answer to "Can Coffee Cause Anxiety?": Practical Steps
Your relationship with caffeine is unique to you. Rather than general advice, observing your own body will give you the right answer.
1. Keep a caffeine diary for a week. Note down every coffee, tea, energy drink and cola you have, along with the time. Next to it, write down the moments in the day when you felt restless, had palpitations or felt tense, rating them from 0 to 10. After a week you will be able to see whether there is a link between the two.
2. Set a cut-off time. Because the effect of caffeine lasts for hours, try not having caffeinated drinks after a certain time in the afternoon. For many people, two o'clock in the afternoon is a good starting cut-off.
3. Cut down gradually. If you consume a lot of caffeine, stopping all at once can cause headaches, irritability, tiredness and even anxiety-like symptoms. This then leads to the conclusion "I felt worse when I gave up coffee." Cutting down by one glass or one cup every few days makes it easier for your body to adjust.
4. Adjust the strength and size. Brewing tea more weakly, choosing a small coffee instead of a large one and replacing part of your coffee with a decaffeinated option all reduce the amount without breaking your habit altogether.
5. Do not drink it on an empty stomach. Coffee drunk without breakfast can hit both your stomach and your nervous system harder. Drinking it after eating something softens the effect.
6. Remember to drink water. Not drinking enough water during the day can also contribute to headaches, tiredness and difficulty concentrating. Adding a glass of water alongside each coffee is a simple but effective habit.
7. Keep the ritual, change the contents. A coffee break is often not just about caffeine but a moment to catch your breath. Continuing this break with linden, sage or fruit tea reduces caffeine without losing its social and emotional function.
Caffeine rarely creates anxiety, but it turns up the volume on a quiet alarm. Getting to know yourself means finding where the volume knob is.
When Should You Seek Professional Support?
If your restlessness, palpitations, constant worry and sleep problems continue even though you have cut down on caffeine, what lies beneath the symptoms may not be caffeine alone but anxiety itself. It is helpful to talk to a professional in the following situations:
- If you have attacks that start suddenly and come with intense fear and physical symptoms
- If you constantly check your heartbeat and fear that something bad will happen with every palpitation
- If your tension does not go away even though you have given up caffeine completely
- If sleeplessness has lasted for weeks and is affecting your daily tasks
- If you are turning to caffeine in ever-increasing amounts to cope with tiredness and tension
If sleep problems are at the forefront, our article on how to overcome insomnia may also offer guidance. The healthiest order is to see a doctor first about your physical symptoms, and to consult a mental health professional about the anxiety side.
How Is the Link Between Caffeine and Anxiety Addressed in Therapy?
In therapy, caffeine is usually not a topic on its own but is addressed as part of the lifestyle that keeps anxiety going. In the first sessions, questions are also asked about sleep, eating, physical activity and caffeine habits, because these form the physical ground on which anxiety rests.
In cognitive behavioural therapy (CBT), the main focus is on how bodily sensations are interpreted. Is a racing heart perceived as "danger", or as "I've had a coffee, it's sped up a bit"? Noticing and testing these interpretations prevents the small flutters that come with caffeine from turning into big fears. With people who have panic attacks, controlled exposure to bodily sensations can also be carried out with the therapist; in this way the person learns through experience that palpitations alone are not dangerous.
For some people, caffeine has turned into a coping tool: it is used to cover up tiredness, lack of motivation or low mood. In that case, the need underlying the caffeine is also explored together.
Changes made in therapy usually start with small, achievable goals. For example, in the first week only brewing the evening tea more weakly, and in the second week swapping the afternoon coffee for a decaffeinated one. These small experiments let the person see with their own eyes how their body responds, and reduce the helpless feeling that "nothing affects my anxiety".
Work on anxiety and panic can be carried out face to face or online.
Frequently Asked Questions
Can decaffeinated coffee cause anxiety?
Decaffeinated coffee has had most of its caffeine removed, but it is not completely caffeine-free. Even so, because the amount it contains is very low, a noticeable anxiety effect is not expected in most people. It can be a good option for those who do not want to give up the taste and ritual of coffee but would like to reduce their caffeine.
Is green tea more innocent than black tea?
Green tea also contains caffeine; the amount varies with the brewing time and the type of tea. Switching only to green tea may reduce caffeine, but if many glasses are drunk throughout the day the total can still be high. What matters is not the name of the drink but your total consumption and your own sensitivity.
Why do I feel more tense when I give up coffee?
When someone who regularly consumes large amounts of caffeine stops suddenly, their body goes through a period of adjustment. During this period, headaches, irritability, tiredness and restlessness can last for a few days. These symptoms are usually temporary; cutting down gradually makes this period much easier to get through.
Does Turkish coffee or filter coffee have a stronger effect?
This depends largely on the size of the cup and how the coffee is prepared. Because Turkish coffee is drunk from a small cup, the caffeine taken in at one time is often less than in a large filter coffee. But as the number of cups drunk during the day increases, the gap closes. Observing your own reaction is more informative than general comparisons.
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Eda Erkan Alapala
Klinik Psikolog. İstanbul Kent Üniversitesi Klinik Psikoloji Tezli Yüksek Lisans mezunu; bilişsel davranışçı terapi, çocuk merkezli oyun terapisi ve çocuk-ergen psikoterapisi alanlarında eğitimlerini tamamlamıştır.
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