The Claim

L-citrulline supplementation combined with exercise has no significant effect on total body weight, body mass index, gynoid fat mass, or total lean mass in adults, and reductions in fat mass are not attributable to changes in these measures.

Source: Synergistic Effect of Long-Term L-Citruline Supplementation Combined with Exercise on Body Composition in Adults: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
39score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Description
1 study reviewed
In plain English

Taking L-citrulline with exercise does not change total body weight, body mass index, fat mass in the hips and thighs, or lean mass in adults. Any fat loss observed is not caused by losing weight or gaining muscle.

See the scientific wording

L-citrulline supplementation combined with exercise does not significantly alter total body weight, body mass index, gynoid fat mass, or total lean mass in adults, indicating that observed fat mass reductions are not due to overall weight loss or muscle gain.

Why this might work

The body breaks down fat in specific areas like the belly without losing overall weight or muscle, because fat is used locally for energy while other body parts stay the same size.

Supported mechanismbased on 1 study

What the research says

1 study
  1. Study: Synergistic Effect of Long-Term L-Citruline Supplementation Combined with Exercise on Body Composition in Adults: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.

    Taking L-citrulline with exercise helps reduce belly fat without making you lighter or more muscular—your weight and muscles stay about the same, but you lose fat in specific areas.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.