Apple cider vinegar for weight loss — what 10 trials actually found

Claim

apple cider vinegar MELTS FAT?

Catch

789 PEOPLE TOTAL

Verdict

A CLUE, NOT A CURE

The study: 2,961 reports screened, 10 RCTs eligible, 789 adults total. Only trials lasting 4 weeks or longer. Daily ACV intake compared with placebo for body weight, BMI, and waist circumference.

The pooled results showed ACV significantly reduced body weight (SMD -0.39, 95% CI -0.63 to -0.15, P = 0.001), BMI (-0.65), and waist circumference (-0.34). The effect was modest — roughly 1 to 2 kilograms of weight loss.

But the benefit showed up only in specific conditions: up to 12 weeks, at 30 mL per day, and in adults who were overweight, obese, or had type 2 diabetes. Not everyone benefited.

The catch: ten small trials, 789 people total. Short duration (4–12 weeks). High heterogeneity between studies (I² = 62%). The authors call ACV an adjunct, not a replacement for diet and exercise.

SOURCES

1. Castagna V, Ferro S, Noto D, Bruno R, Aragao Guimaraes L, Pujia A. Effect of Apple Cider Vinegar Intake on Body Composition in Humans with Type 2 Diabetes and/or Overweight: A Systematic Review and Meta-Analysis. Nutrients. 2025;17(18):3000. doi:10.3390/nu17183000. PMID: 41010525.

For information only, not medical advice. Talk to your doctor before starting any new regimen.

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