We conducted a meta-analysis to assess the effect of green tea, caffeine and capsaicin supplements on the anthropometric indices in adults. PubMed/Medline, Scopus, Cochran and Web of Science databases were searched up to March 2017. Green tea significantly reduced weight by −0.65 kg (−1.10 to −0.20, P = 0.005), body mass index (BMI) by −0.26 kg/m² (−0.43 to −0.10, P = 0.002) and waist circumference by −1.11 cm (−1.99 to −0.23, P = 0.01) but not percent of body fat (PBF) (−1.42%, 95% CI: −3.02 to 0.18, P = 0.08). Caffeine supplement had no effect on weight (−2.99 kg, 95% CI: −7.83 to 1.41, P = 0.18). We observed a significant weight loss after capsaicin supplement (−0.50 kg; 95% CI: −0.90 to −0.11, P = 0.01) but PBF did not change significantly from baseline (0.11%, 95% CI: −0.22 to 0.43, P = 0.51). Green tea and capsaicin supplements have a significant mild weight-lowering effect. On the contrary, it seems caffeine had no effect on weight.

我们进行了荟萃分析，以评估绿茶，咖啡因和辣椒素补充剂对成人人体测量指标的影响。截至2017年3月，已搜索PubMed / Medline，Scopus，Cochran和Web of Science数据库。绿茶可将体重显着降低-0.65 kg（-1.10至-0.20，P = 0.005），体重指数（BMI）降低-0.26 kg /米²（-0.43至-0.10，P = 0.002）和腰围为-1.11 cm（-1.99至-0.23，P = 0.01），但不是人体脂肪（PBF）的百分比（-1.42％，95％CI：-3.02至0.18，P = 0.08）。咖啡因补充剂对体重没有影响（-2.99 kg，95％CI：-7.83至1.41，P = 0.18）。我们观察到补充辣椒素后体重明显减轻（−0.50 kg； 95％CI：-0.90至-0.11，P = 0.01），但PBF与基线相比无明显变化（0.11％，95％CI：-0.22至0.43，P = 0.51）。绿茶和辣椒素补充剂具有明显的轻度减肥作用。相反，咖啡因似乎对体重没有影响。