Green tea
Green tea is a form of the Camellia sinensis plant that is made from steaming and pan-frying the leaves, without fermentation. Green tea contains caffeine, which is proposed to contribute to appetite suppression and stimulate thermogenesis . Antioxidants, including the catechin epigallocatechin gallate, inhibit the breakdown of norepinephrine, which leads to increased calorie burning . Which Fat Burning Pills Women really works Thirty-eight RCTs published between 2005 and 2017 were identified; of these, 16 (42%) were categorized as having an overall low degree of bias. Of these 38, the majority were conducted in Asia (50%). Funding sources were not revealed in nine (24%) studies, and the remaining were funded by both industry and governments. The duration of the studies was between 6 weeks and 12 months. The number of participants in each arm ranged from 5 to 123. Sex composition was variable (female [30%-100%]). Only 8 studies (21%) demonstrated significant different values between groups over time; 13 (34%) did not report statistical measures for weight change. Sixteen studies noted a low risk of bias , five (31%) included only women, and seven (44%) studies were <3 months in duration. 2 Popular Fat Burner Supplements Without Side Effects Only 2 of the 16 studies demonstrated statistically significant improvements in weight ranging from 1.5 to 1.7 kg , both of which lasted less than 8 weeks (Supporting Information Tables S10A-D).