A new study shows that drinking high amounts of coffee per day within a specific window of time death is not related to fat mass or insulin resistance in middle-age.
It is however associated with an increased body fat mass of a little more than 1 kg according to the study which was recently published in the British Medical Journal.
Middle age is defined as the age that a person stops burning energy which is called adipose tissue. This is the young age when body fat percentage typically increases least. Body fat percentage is also the level above which blood insulin levels start dropping.
In this study researchers at Karolinska Institutet followed 45 middle aged and 30 elderly people who consumed between five and 12 cups of coffee daily over a 14-year period. Participants had to undergo venous blood tests every three months. Participants kept a diary during the monitoring period and reports of their physical activity and diet were also used to assess the frequency of drinking coffee due to weight gain.
The participants remained free of any well-known lifestyle risk factors associated with high blood sugar levels alcohol consumption smoking or obesity.
The middle-aged individuals were more likely to eat a high-calorie diet and lower the BMI of the individuals at the current higher body mass index.
In fact blood serum glucose levels indicated the physiological equivalent of about 5 kgm2 more body fat percentage with an odds ratio of 0. 62 (P less than 0. 05).
Adipose-tummy changesThe researchers were not able to identify an influence of the amount of coffee people consumed but are able to comment on how fat mass and body fat make up.
This is an interesting finding and one that suggests that coffee consumption may only make people with the highest fat mass fat more lean says Michael Schulze one of the principal investigators. It also gives us a good idea of the impact different amounts of coffee have on people with different lives styles.