The Claim

L-citrulline supplementation combined with exercise results in a greater reduction in android fat mass compared to total fat mass, indicating a preferential effect on visceral or abdominal adipose tissue, which is clinically significant due to its established association with metabolic disease risk.

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.

How it works
1 study reviewed
In plain English

When people take L-citrulline and exercise, they lose more fat around their abdomen than fat overall, and this specific fat loss is linked to lower risk of metabolic diseases.

See the scientific wording

The reduction in android fat mass from L-citrulline and exercise is greater than the reduction in total fat mass, suggesting a preferential effect on visceral or abdominal adipose tissue, which is clinically significant due to its association with metabolic disease risk.

Why this might work

L-citrulline turns into arginine in the body, which makes more nitric oxide. Nitric oxide opens up blood vessels in the belly fat area, letting more blood flow through during exercise. This brings more oxygen and fat-burning signals to the fat cells, causing them to break down more fat specifically in the abdomen.

Suggested 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.

    This study found that taking L-citrulline along with exercise helps shrink belly fat more than fat elsewhere in the body, which is good because belly fat is linked to heart disease and diabetes.

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.