Discovered benefits of green tea and coffee for people with diabetes

Discovered benefits of green tea and coffee for people with diabetes
Discovered benefits of green tea and coffee for people with diabetes
Anonim

Japanese scientists have found that daily heavy consumption of green tea and coffee reduces the risk of death in people with type 2 diabetes by 63 percent. The results of the study are published in the BMJ Open Diabetes Research & Care journal.

Various published studies show that regular consumption of green tea and coffee is beneficial for health due to the various bioactive compounds contained in these drinks. However, how these drinks work on people with type 2 diabetes was still unknown.

Scientists led by Yuji Komorita of Kyushu University have tracked how green tea and coffee consumption, both individually and collectively, correlates with the risk of death from all causes in the Fukuoka Diabetes Register prospective study. The aim of this project is to assess the impact of medication and lifestyle choices on the mortality rate of patients with type 2 diabetes.

The sample included 4,923 Japanese - 2,790 males and 2,133 females, with an average age of 66 years, who had been diagnosed with type 2 diabetes at least five years ago.

At the start of the study, participants completed a 58-item questionnaire in which they provided information about their lifestyle. The questions were related to factors such as regular exercise, smoking, alcohol consumption, and the number of hours of sleep. The questionnaire also included questions about how many cups of green tea and coffee they drank each day.

In order to correct risk factors, participants measured their height, weight and blood pressure, took blood and urine tests.

It turned out that 607 participants did not drink green tea at all, 1143 drank one cup a day, 1384 - two or three cups, and 1784 - four or more. 994 participants did not drink coffee, 1306 drank less than one cup a day, 963 had a cup every day, and 1660 had two or more cups.

During the observation period, which lasted five years, 309 people died. The main causes of death were cancer and cardiovascular diseases - 114 and 76 people, respectively. Moreover, the lowest rates were among those who drank a lot of green tea and coffee.

The results showed that drinking four or more cups of green tea daily, plus two or more cups of coffee, reduced the risk of death by 63 percent.

The authors note that this was an observational study that did not aim to establish a biological cause.

"This is a prospective cohort study that demonstrated that higher consumption of green tea and coffee is significantly associated with lower all-cause mortality. It is possible that the combined effects of the two drinks enhance the effect," the authors write.

Researchers attribute this to the fact that green tea contains several antioxidant and anti-inflammatory compounds, including phenols, theanine, and caffeine. Coffee also contains many bioactive components, including phenols. Caffeine is believed to have a positive effect on insulin production and improve insulin sensitivity.

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