German study found no relationship between coffee drinking and chronic diseases

Coffee drinkers are less likely to develop type 2 diabetes than regular coffee drinkers, according to a German study that showed no link between coffee drinking and chronic diseases such as heart disease, cancer and type 2 diabetes.

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Previous studies on coffee and health have shown conflicting results, with some showing that regular coffee drinking increases a person's risk of heart disease, cancer, stroke and more.

To further investigate coffee's health implications, researchers at the German Institute for Human Nutrition followed more than 42,000 German adults for nearly 10 years. At the start of the study, the participants had no chronic diseases, and the researchers learned about their coffee drinking habits, diet, exercise and physical condition.

For the next nine years, the researchers collected information every two or three years, focusing on the health status of the survey participants, especially the incidence of cardiovascular disease, stroke, heart disease, diabetes and cancer.

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Of the 8689 non-coffee drinkers, 871 developed a chronic disease, and of the 12137 who drank at least four cups of coffee a day, 1124 developed a chronic disease. In other words, there was no significant difference in chronic disease between coffee drinkers and coffee infrequent drinkers.

Reuters quoted the project leader, epidemiologist Anna? "Our study shows that coffee consumption in healthy adults does not lead to major chronic diseases," Flogel reported.

The study was published in the latest issue of the American Journal of Clinical Nutrition. Professor Rob McKenzie, National University of Singapore Fan Dan was not involved in the study. "We're not encouraging non-coffee drinkers to start drinking coffee, but the evidence on coffee and health suggests that coffee lovers without special conditions don't have to drink less coffee to reduce their risk of chronic disease," he said.

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The researchers also found that coffee drinkers were less likely to develop type 2 diabetes than non-coffee drinkers. The data showed that 3.2% of those who drank four cups of coffee a day developed type 2 diabetes, compared with 3.6% of those who did not drink coffee.

Type II diabetes, also known as adult-onset diabetes, more than 90% of patients belong to this type, characterized by insulin insensitivity. In addition to genetic factors, type 2 diabetes is associated with unhealthy diet and lifestyle.

After taking into account factors such as weight and smoking, the researchers determined that coffee drinkers were 23 percent less likely to develop diabetes than non-coffee drinkers. This percentage is consistent with data from other studies.

This does not mean that drinking coffee prevents type 2 diabetes, but some animal studies have shown that certain chemicals in coffee play a positive role in metabolism, the researchers said.