The association between caffeine intake and BMI

Caffeine, a widely consumed psychoactive substance, has attracted interest because of its potential effects on body weight. This study examines the relationship between caffeine intake and Body Mass Index (BMI) across genders and obesity subgroups using data of 4,937 adult participants from the NHANES examination. The findings indicate that there is a significant positive correlation between caffeine intake and BMI in both male and female groups respectively. This suggests that higher caffeine consumption is associated with increased BMI. The association remains consistent within the normal BMI range but becomes less pronounced among individuals classified as obese. However, due to the limitations of the cross-sectional design and the exclusion of certain variables, this model still needs to be further refinement. This study highlights needs for further research into the association between caffeine consumption and body weight, with relevant implications for individuals and the health and wellness industry.