Evidence Level
Garcinia Cambogia is a weight loss supplement derived from the fruit *Garcinia cambogia*, primarily known for its active compound hydroxycitric acid (HCA). Despite its popularity and media promotion, clinical evidence supporting its efficacy remains inconsistent. A large-scale trial by Heymsfield et al. (1998) involving 135 obese individuals over 12 weeks found no significant weight loss difference between Garcinia Cambogia and placebo.
A subsequent meta-analysis by Onakpoya et al. (2011) reviewed 12 randomized clinical trials, concluding that Garcinia extract/HCA caused only a small, statistically significant weight loss compared to placebo (-0.88 kg; 95% CI: -1.75, -0.00). This effect was described as not robust and likely clinically insignificant.
Recent studies have explored additional potential benefits of Garcinia Cambogia. A systematic review and meta-analysis by Amini et al. (2024) involving 14 randomized controlled trials (623 subjects) found that Garcinia Cambogia significantly reduced total cholesterol (-6.76 mg/dL), triglycerides (-24.21 mg/dL), and increased HDL-C (+2.95 mg/dL). Another study by Amini et al. (2024) reviewed 8 RCTs involving 330 participants, concluding that Garcinia Cambogia significantly reduced serum leptin compared to placebo (WMD: -5.01 ng/ml, p=0.02).
Despite these findings, the evidence supporting Garcinia Cambogia's effectiveness for weight loss remains modest and inconsistent. Further research is needed to fully understand its potential benefits and limitations in human populations.