A study published in BMJ Medicine suggests that higher blood caffeine levels may reduce the risk of developing type 2 diabetes by lowering body mass index (BMI).
Researchers used genetic data to explore how caffeine impacts BMI and diabetes risk, focusing on nearly 10,000 participants from previous studies.
The findings indicate that individuals with higher genetically predicted caffeine levels had lower BMI, which is a critical factor in reducing the risk of type 2 diabetes. The study found that a 43% reduction in BMI was linked to lower rates of diabetes among participants with higher caffeine levels [1].
It adds, “genetically predicted, lifelong, higher plasma caffeine concentrations were associated with lower body mass index and fat mass, as well as a lower risk of type 2 diabetes.”
Caffeine influences weight and fat distribution by boosting metabolism, increasing fat burning and suppressing appetite [2]. This metabolic effect, combined with lower fat storage, helps prevent obesity and reduces the likelihood of developing type 2 diabetes.
The research highlights that BMI reduction mediates caffeine’s protective effect against the disease.
While the study supports caffeine’s potential role in reducing diabetes risk, it also emphasizes that the results are based on genetically predicted caffeine levels. Therefore, drinking more coffee or consuming more caffeine may not automatically lead to the same effects observed in the study.
The study provides new insights into how caffeine may help lower the risk of type 2 diabetes through BMI reduction. However, further research is needed to confirm these findings and determine whether caffeine consumption directly contributes to these benefits.
[1] BMJ Medicine. Appraisal of the causal effect of plasma caffeine on adiposity, type 2 diabetes, and cardiovascular disease: two sample mendelian randomisation study
[2] Critical Reviews in Food Science and Nutrition. The effects of caffeine intake on weight loss: a systematic review and dos-response meta-analysis of randomized controlled trials
