Effect of Green Tea on Body Composition in Healthy Adults: A Randomised Controlled Trial

Introduction: Green tea has gained attention for its potential benefits in weight loss and improving metabolic health, particularly concerning obesity and Metabolic Syndrome. Green tea and its extracts have shown positive results in weight reduction by causing energy expenditure, and fat oxidation, and also by preservation of fat-free body mass. Aim: To compare the effect of green tea on weight, Body Mass Index (BMI), body fat percentage, blood pressure and basal metabolic rate in study and control groups at the start of study and at the end of eight weeks. Materials and Methods: The present randomised controlled trial was conducted in Indira Gandhi Government College and Hospital, Nagpur, Maharashtra, India, from April to May 2021, involving healthy MBBS students aged 18-25 years. The present study was completed with 32 participants in each group: Group I consumed green tea daily for eight weeks, while Group II was control group. The study assessed anthropometric measures, such as weight, BMI, body fat percentage, blood pressure and Basal Metabolic Rate (BMR) before and after the intervention using body composition analyser QUADSCAN4000. Parameters between same group at time duration 0 and 8 weeks were compared by paired t-test. Comparison between control and experimental groups were done by unpaired t-test. Results: The mean age of subjects (16 males, 16 females) was 20.09±09 years and of control group (16 males, 16 females) was 19.38±1.10 years at the start of study. The green tea drinking group experienced significant reductions in weight (mean -2.20 kg, p-value