New study shows from how many cups of coffee is harmful to health
For most people, morning coffee is a must. Even the thought of coffee cheers many people up. But how much coffee is healthy? From what amount do we harm our health? A new study showed: “From 6 cups a day should be over!”
Latte macchiato, cappuccino or conventional filter coffee: coffee is not only one of the most popular pick-me-ups among Germans. The hot drink is consumed especially in the morning in order to get going faster. Coffee has long been considered a health hazard, but today it is known that the hot brew is healthier than was often assumed. However, it depends on the amount. Researchers from Australia have now carried out a scientific study to determine how much coffee is still healthy per day.
Advantages and disadvantages of drinking coffee
The advantages and disadvantages of drinking coffee have been discussed for decades.
Studies have shown that coffee is, among other things, good for the heart and can also reduce the risk of colon cancer.
However, it also depends on the amount consumed. In recent studies by researchers from the University of South Australia, it has now been determined how many cups a day of coffee is harmful to health.
The results of the scientists were published in the American Journal of Clinical Nutrition.
Relationship between coffee consumption and cardiovascular diseases
According to the World Health Organization (WHO), cardiovascular diseases are the leading cause of death worldwide. But they are also among the best preventable diseases.
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The University of South Australia researcher Dr. Ang Zhou and Professor Elina Hyppönen from the Australian Center for Precision Health have now investigated the relationship between long-term coffee consumption and cardiovascular diseases.
They were able to confirm that too much caffeine can lead to high blood pressure, a precursor to heart disease.
According to the study authors, drinking six or more coffees a day can be harmful to health and increase the risk of heart disease by up to 22 percent.
According to a communication from the university, this is the first time that scientists have set an upper limit for safe coffee consumption and cardiovascular health.
The most widely used stimulant in the world
“Coffee is the most commonly used stimulant in the world - it wakes us up, increases our energy and helps us to concentrate. But people always ask: "How much caffeine is too much?", Says Prof. Hyppönen.
“Most people would agree that drinking a lot of coffee can make them feel nervous, irritated, or even sick. This is because caffeine helps her body work faster and harder, ”explains the study author.
"We also know that the risk of cardiovascular diseases with high blood pressure increases, a known consequence of excessive caffeine consumption," says Hyppönen.
"To maintain a healthy heart and blood pressure, people need to limit their coffee to less than six cups a day - based on our data, six was the turning point at which caffeine began to negatively affect cardiovascular risk."
It is about keeping to measure
In order to arrive at their results, the researchers used data from the British biobank of 347,077 participants aged between 37 and 73 years.
They also found negative effects after the sixth cup in people who have the metabolizing gene CYP1A2, which is responsible for faster caffeine processing.
“An estimated three billion cups of coffee are drunk all over the world every day,” says Prof. Hyppönen.
"It is essential to know the limits of what is good for you and what is not," says the scientist. "As with many things, it is all about being measured; with gluttony, health will pay for it. "
Does coffee raise blood pressure?
Studies show that drinking coffee regularly does not affect blood pressure. Filter coffee does not affect the cholesterol level either: to raise it slightly, you would have to chew coffee beans or coffee powder, and in large quantities. In 2003, the United States National Heart, Lung, and Blood Institute withdrew a warning that people with high blood pressure should drink little coffee. A study of 150,000 women showed no connection between coffee consumption and high blood pressure.
Does coffee have a draining effect?
A common myth is that coffee is draining. This thought arose “because some older study data was read incorrectly,” emphasizes Helga Strube of the German Nutrition Society (DGE). Due to the amount of water supplied, regular and even coffee consumption naturally influences the fluid balance and it can be counted in the "liquid balance" with confidence; Strube is quoted by the "dpa". Although the caffeine promotes urine excretion and sodium release through the kidneys, with moderate consumption of four cups a day, this is balanced out by the body. However, the prerequisite is that enough is drunk overall, with a rule of thumb of at least 1.5 liters.
A glass of water with coffee is not absolutely necessary, but it is a good tradition. According to the DGE expert, coffee should be consumed as a stimulant and not as a thirst quencher - despite the fact that it is counted towards the fluid balance and other positive health effects. (ad)