Over the last couple of years, green tea has become one of the more popular weight loss aids. This is because several research studies in animals and people have suggested that green tea might aid with weight loss efforts by suppressing appetite, increasing body metabolism, and decreasing fat absorption. These weight loss benefits of green tea are thought to be primarily due to the catechins, anti-oxidant compounds, found in green tea, though the exact mechanism(s) is still under investigation.
Another research study designed to examine the possible benefits of green tea on blood sugar health and weight loss was published in Nutrition Journal (free to download). For this study, investigators asked 14 healthy volunteers to consume a meal with either green tea or water at two different times. Each meal consisted of white bread with sliced turkey and 300 ml of the assigned drink. Green tea was brewed and served hot with the meal. Blood samples were taken prior to eating the meal and at several time points after eating the meal. During these time points, study volunteers were also asked to fill out questionnaires related to feelings of fullness. The study investigators reported: