L-Carnitine boosts weight loss significantly
8.0Strong
evidence
evidence
The Claim
Many believe that taking L-Carnitine supplements helps to burn fat more efficiently, leading to significant weight loss without changes in diet or exercise.
Origin
This myth likely originates from marketing claims by supplement companies and anecdotal reports that highlight its role in fat metabolism.
What Science Says
Research, including randomized controlled trials (RCTs), shows that L-Carnitine can slightly increase fat oxidation during exercise, but the effect on overall body weight is minimal. A meta-analysis of studies on L-Carnitine and weight loss found only modest reductions in body weight, often not clinically significant.
Verdict
Mostly False
Sources
- PMID:32359762 Effects of l-carnitine supplementation on weight loss and body composition: A systematic review and meta-analysis of 37 randomized controlled clinical trials with dose-response analysis.
- PMID:38594107 The Effects of L-Carnitine Supplementation on Weight Loss, Glycemic Control, and Cardiovascular Risk Factors in Patients With Type 2 Diabetes: A Systematic Review and Dose-response Meta-Analysis of Randomized Controlled Trials.
- PMID:27335245 The effect of (L-)carnitine on weight loss in adults: a systematic review and meta-analysis of randomized controlled trials.