coffee (freepik photo)
It turns out that drinking three cups of coffee a day can curb obesity and prevent diabetes, explains a new study. The scientists in Sweden believe that caffeine-free, calorie-free drinks should be a major target of investigation when it comes to dealing with weight gain and the onset of type 2 diabetes.
The new study shows that the greatest benefit appears among those with a genetic predisposition to metabolize caffeine much more slowly than others, leaving more of the substance in their blood. Previous research has linked drinking three to five cups of coffee a day with a lower risk of type 2 diabetes and cardiovascular disease.
More in-
Scientists already know that the stimulant increases metabolism, increases fat burning and reduces appetite. Consuming 100 mg per day (around one cup of coffee) increases energy expenditure by about 100 calories per day.
In the latest development, the Karolinska Intitutet team found that people who consume caffeine slowly – because of certain genes – have increased caffeine levels in their blood. This increased the fat-burning effect of the stimulant, reducing their risk of type 2 diabetes.
To reach their conclusions, the team reviewed previous studies to uncover the effect of caffeine on body fat and the onset of type 2 diabetes. They also investigated how the relationship between caffeine and the body changes with people’s genetic makeup.
Scientists focused on two common genetic variants that dictate how quickly the body metabolizes caffeine – CYP1A2 and AHR. The results show that participants consumed less caffeine when they had a genetic predisposition to metabolize the stimulant slowly. Even so, those people have more of the substance in their blood than those who pass it quickly.
High levels of caffeine in the blood were associated with lower weight, body fat and risk of developing type 2 diabetes – provided they were included in the group with the genes that dictate slower caffeine consumption and higher blood caffeine levels scores.
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