Coffee for kidney health? Researchers found that 3 cups per day helped people with chronic kidney disease live longer
11/07/2017 // Janine Acero // Views

Brew another cup of Joe – new research suggests that caffeine consumption may extend the life of those with chronic kidney disease.

Coffee has been a staple at the breakfast table for a very long time. These days, it's a novelty among young people to have a cup while catching up with friends in dainty coffee shops.

The little brown bean has been known to have many beneficial properties for our health. According to an entry in, the recommended caffeine intake per day is 400 milligrams. That's equivalent to three cups of coffee every day; any more and it becomes unhealthy for you. This study is the first to suggest that it can be significantly beneficial to people with chronic kidney disease. (Related: Another great reason to drink ORGANIC, Fair Trade coffee: It decreases your risk of heart disease.)

Nearly two million people in the U.K. suffer from kidney disease and five million in the U.S. Those who are diagnosed become susceptible to developing other diseases such as heart attack or stroke. Severe cases can lead to kidney failure and death.

Portuguese researchers analyzed data from 2,328 patients diagnosed with chronic kidney disease who participated in the National Health and Nutrition Examination Survey between 1999 and 2010. Based on the patients' caffeine consumption and death rates, the findings reveal that those who were habitual drinkers of coffee increased their chances of prolonging their life – those who drink two cups daily have a 12 percent chance of survival, and those who had three cups a day have a 20 percent chance.


This suggests that the link between caffeine intake and mortality rate in patients with chronic kidney disease is “dose-dependent,” which means the increase in survival rate coincides with the increase in caffeine consumption.

"These results suggest advising patients with chronic kidney disease to drink more caffeine may reduce their mortality," Dr. Miguel Bigotte Vieira of North Lisbon Hospital Center said.

Dr. Vieira added that factors such as age, alcohol consumption, BMI, diet, education, family income, gender, high blood pressure, previous strokes or heart attacks, smoking status, and race did not affect the overall observation of this phenomenon. However, the researchers noted that further studies need to be conducted to give a more concrete evidence that coffee can have such effects on diagnosed patients.

The findings were presented at the American Society of Nephrology Kidney Week conference in New Orleans.

Silent killer

There is little awareness about chronic kidney disease; it creeps up on people who already have some type of disease such as diabetes, hypertension, and family history of kidney failure. It damages the kidneys and creates waste buildup that eventually enters the bloodstream, poisoning the body slowly. When left undetected or untreated, it can lead to kidney failure.

According to, 30 million adults in the U.S. have the disease, and millions more are at risk of developing it overtime.

The disease is detected when there is an excess of protein in the urine (persistent proteinuria) but blood pressure tests can also detect signs of its presence. The symptoms are usually left unnoticed until the disease has significantly progressed. lists some of the more common symptoms you might want to look out for:

  • You feel exhausted more often;
  • You have poor appetite;
  • You have trouble sleeping;
  • You have swollen feet and ankles;
  • You have dry, itchy skin; and
  • You need to urinate more often, especially at night.

Read more about how to prevent kidney disease and many others at

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