Personal Health

How does coffee, the blood pressure really?

Coffee consumption is acts stimulating – so he can, for example, help to better focus the performance to increase and awake to stay. This effect owes coffee, mainly the ingredient of caffeine.

Unusually high coffee consumption, however, can unwanted side effects have such as nervousness, tachycardia or insomnia. Due to the content of caffeine in coffee also increases blood pressure.

Coffee makes the blood pressure but only slightly and in the short term to increase. After no more than half an hour, the blood pressure values are usually in the same area as in front of the coffee consumption.

Tip: If you measure your blood pressure want to, but just coffee drinking have, it is best to wait an hour with the measurement.

Anyone who regularly drinks coffee, even get used to the caffeine, so its effect wears off. This habituation effect occurs after two to three weeks. The consumption of coffee increases blood pressure, then barely or not at all in the height.

To find out whether and how a regular consumer of coffee on blood pressure impact, researchers in a 2012 published meta-analysis of more than 600 studies on this topic were evaluated. In total, revealed no significant effect of coffee on blood pressure. (However, the quality left a lot to some studies, to be desired, which is why the results are not in doubt.)

However, even if coffee does not affect blood pressure, is experts advise to drink a lot of coffee. That coffee consumption is generally harmful, and have refuted many of the newer studies, but rather – it depends on the amount.

The General recommendation is currently: Healthy adults can, without hesitation, up to 400 milligrams of caffeine spread throughout the day to take. As a single dose up to 200 milligrams of caffeine is regarded as harmless to health.

A decisive factor in how much caffeine exactly is harmless to health, is the body weight:

  • For adults per kilogram of body weight 3 milligrams of caffeine as a single dose 5.7 milligrams spread throughout the day as unproblematic.
  • For children and young people apply per kilogram of body weight to a maximum of 3 milligrams of caffeine as harmless, no matter whether as a single dose or spread throughout the day.

How much is the caffeine content of coffee depends on the coffee variety, roasting, and preparation. On average, plug in 100 mm filter coffee litres, about 45 milligrams of caffeine. The maximum recommended amount for adults is equivalent to approximately four to five cups of coffee filter coffee (1 coffee Cup = about 1 eighth of a liter).

The kind of people who drinks a lot of coffee, should then, however, no further caffeine-containing drinks or food (such as black tea, energy drinks, and chocolate) to take.

According to the German heart Foundation can people with high blood pressure coffee in the recommended maximum amount of drinking. Who, however, heart rhythm disorders , the by coffee increase, better decaf coffee (or the beverage dispense).


Coffee and blood pressure: “How many cups can I drink per day safely?” Online information of the German heart Foundation e. V.: (retrieval date: 30.10.2019)

Coffee: Healthy drink – ingredients of coffee. Online information of the German Federal centre for nutrition: (retrieval date: 30.10.2019)

In the mood for coffee? Seven myths in the facts check. Online information from the techniker Krankenkasse: (status: 2.7.2019)

Coffee: The Good in the bean. Pharmazeutische Zeitung online edition 31/2016 (status: 1.8.2016)

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