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Studies show that drinking coffee and tea can help prevent strokes and dementia. However, quite a few of you have concerns about consuming too much caffeine.

How much coffee is too much?
But, you know what? Drinking more than a few cups of coffee doesn't cause heart problems, according to a new study.

The study followed 100 people for 14 days wearing the best possible technology to measure changes in their heart. The researchers found that while coffee can cause fluctuations in heart rate, it is not dangerous. There are two types of heart palpitations: premature atrial contractions and premature ventricular contractions. The first is associated with health problems, the other is harmless. Coffee can cause the harmless form because caffeine can change your heart rate. However, this does not mean that your body has problems or is at risk - provided your heart is healthy. If you tolerate it well, drinking a few cups seems to have many benefits. Other studies appear to show that drinking 3 cups or more is also linked to protection against cancer. Of course, if too much coffee makes you feel unwell and nervous, or causes stomach upset or headaches, there's no reason to force it. Drink the amount that suits you best. You can easily avoid caffeine. The benefits of coffee and tea likely extend to decaffeinated versions as they also contain powerful polyphenols.

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