One study gathered the data from 200,000 and more people reveals that drinking normal amounts of coffee is connected with a lower risk of death. Drinking from 3 to 5 cups of coffee every day lowers the risk of premature death by up to 15 percent in a comparison with those people that don’t consume coffee, concluded the researchers from the Harvard’s T.H. Chan School of the Public Health.
Art Technica reports that the authors of the study complied the data from the health records that belonged to 200,000 people and more, extracted from three big clinical trials including many health professionals, like doctors.
The participant in the trials answered to food questionnaires periodically and were followed for about 30 years. During those 30 years, about 30,000 participants died.
The researchers said that the results from this study and some previous studies show that the consumption of coffee can be included into a healthy lifestyle. Some other studies showed that the consumption of coffee lowers the risk of liver diseases, cardiovascular disease, erectile dysfunction, diabetes, and overall mortality, but this study is the first that assesses the effects of excess coffee drinking.
Drinking about 5 cups of coffee every day decreases the risk of all-cause mortality by 5-9 %. Drinking more than this amount has no connection with the risk of mortality though people who drank large quantities of coffee may also be smokers.
Excluding the people that smoke, the researchers find out that drinking more than 5 cups of coffee a day had a mortality risk 12 percent lower than those people who don’t drink coffee. The people that don’t smoke, drink up to 5 cups a day had a 15 percent lower risk of mortality than the non-drinkers.
The researchers concluded that the heavy coffee drinking lowers the risk of suicide, neurological disease and cardiovascular disease. A connection to cancer mortality was not confirmed.