Coffee drinking not linked to chronic illness: study

Coffee drinkers have no more risk of getting illnesses such as heart disease or cancer, and are less likely to develop type 2 diabetes, according to a German study involving more than 40,000 people over nearly a decade.

The findings, published in the American Journal of Clinical Nutrition, came in the wake of many previous studies that produced conflicting results, with some tying coffee drinking to an increase in heart disease, cancer, stroke and more.

"Our results suggest that coffee consumption is not harmful for healthy adults in respect of risk of major chronic disease," said Anna Floegel, lead author of the study and an epidemiologist at the German Institute of Human Nutrition Potsdam-Rehbruecke.

The researchers collected information at the beginning of the study on coffee drinking habits, diet, exercise and health from more than 42,000 German adults without any chronic conditions.

For the next nine years, the team followed up on the participants every two or three years to see whether they developed any health problems, particularly cardiovascular disease, stroke, heart attack, diabetes and cancer.

They found that coffee drinkers and non-drinkers were similarly likely to develop one of those illnesses.