How many cups of coffee per day harm the kidneys
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A new study showed that consuming three or more cups of coffee a day can harm your kidneys.
The study involved 1,180 adults aged 18 to 45 with stage 1 hypertension (high blood pressure). The scientists monitored these patients for general signs of kidney dysfunction.
The researchers found that a certain variant of the CYP1A2 gene was present in about half of the participants, meaning their bodies were not metabolizing caffeine as quickly as it could. They also found that those who metabolize caffeine more slowly were 2.7 times more likely to experience kidney dysfunction if they drank three cups of coffee or more daily.
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