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Higher levels of caffeine in the blood can reduce obesity and the risk of type 2 diabetes, according to a study published in the journal BMJ Medicine. 

The research was done on individuals of the Caucasian race among nearly 10,000 people who participated in six long-term studies.

The Mendeleev randomization method was applied, in which genetic variants are used as substitutes for a specific risk factor. 

The aim of the study was to investigate the potential causal effects of long-term blood caffeine concentrations on obesity, type 2 diabetes and major cardiovascular disease.

This is why you should stop drinking coffee before 9 a.m. The study found that higher levels of caffeine were associated with lower body mass index. 

The scientists looked at the role of two common genetic variants in the CYP1A2 and AHR genes.

They are related to the rate of metabolism and caffeine in the body.

"The link between obesity and type 2 diabetes is well established, with over 90% of people with this type of diabetes being overweight or obese.

However, the Mendelian scoring technique used by the authors requires caution in its interpretation, as it is vulnerable to biases that may affect the result," said clinical professor at the University of Warwick School of Medicine, Dr Stephen Lawrence, who is not participated in the study, BTV reported. 

Dr. Stephen Lawrence stated that according to science, caffeine consumed with approximately 4 cups of coffee can boost metabolism by 3-11%. 

"The faster the metabolism, the easier it is to burn fat.

That sounds like good news if you're trying to lose weight.

If you consume several cups of coffee, your body will burn fat at a faster rate than those who do not consume coffee.

At the same time, obesity has been found to increase the risk of type 2 diabetes," he added.

Previously published research shows that drinking 3-5 cups of coffee daily, a rich source of caffeine, is associated with a lower risk of type 2 diabetes and cardiovascular disease.

An average cup of coffee contains about 70-150 mg of caffeine.

According to scientists, it is estimated that a daily intake of 100 mg of caffeine increases energy expenditure by about 100 calories per day, which can subsequently reduce the risk of developing obesity.