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Drinking three or four cups of coffee each day slashes your risk of developing type 2 diabetes, a scientific review suggests.
Researchers trawled through 30 studies, which involved nearly 1.2million people, to make the conclusion.
The trial was conducted by researchers at the Institute for Scientific Information on Coffee (ISIC), which was established in 1990.
Up to four cups of a coffee has been associated with a lower risk of developing type 2 diabetes, an analysis of 30 studies has found
Lavazza and Nestle, the group, whose members are major coffee firms, claim to be devoted to the science of coffee and health.
Its new review, presented at the European Association for the Study of Diabetes in Berlin, included a study conducted back in 1967.
Dr. Mattias Carlström, lead author, found the link for both men and women, but the effect was slightly greater in women.
They found drinking cups of coffee was associated with a 27 percent reduced risk.
However, the report also found the protective effect applied to the same amount of decaffeinated coffee.
The risk of developing type 2 diabetes dropping by up to seven with each additional cup of coffee consumed.
Espressos, lattes and cappuccinos are all beneficial. However, adding sugar or syrup is not advised by experts.
A combination of coffee compounds, including trigonellin, cafestol, coffee acid and chlorogenic acid, are thought to be important.
It is unsure how they work, but the researchers suggest they may have an anti-oxidant or anti-inflammatory effect on the body.
Research has suggested that the administration of chlorogenic acid and trigonellin can significantly reduce early glucose and insulin responses.
Two other theories, including that which can produce heat or the microbiome of patients, were put forward.
The team also discusses the role of compound cafestol, with research suggesting it can increase insulin and improve glucose uptake in muscles.
However, all components do not seem to be replicating the effects of drinking a cup – or three – of coffee.
Type 2 diabetes is an increasing problem across Europe and the US, as waistlines across the continent continues to bulge.
There are almost 3.7 million people who have been diagnosed with diabetes in the UK, with 90 percent of cases being type 2 diabetes.
While figures from the American Diabetes Association show there are around 29 million people living with the condition in the US.
Type 2 diabetes is considered a preventable condition if life is managed to prevent weight loss through diet and exercise.
A typical cup of coffee provides 75mg caffeine. European food officials state a daily intake of 400mg.
The new trial is not the first to uncover a link between coffee consumption and reduced risk of type 2 diabetes.
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