The Claim

A 4-week supplementation with 200 mg/day of a standardized Tongkat Ali extract has no significant effect on body weight, body fat percentage, or liver enzyme levels in moderately stressed adults.

Source: Effect of Tongkat Ali on stress hormones and psychological mood state in moderately stressed subjects

What the research says

Supports is higher

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

Supports
56score
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 200 mg of standardized Tongkat Ali extract daily for four weeks does not change body weight, body fat percentage, or liver enzyme levels in adults with moderate stress.

See the scientific wording

A 4-week supplementation with 200 mg/day of a standardized Tongkat Ali extract does not significantly alter body weight, body fat percentage, or liver enzyme levels in moderately stressed adults, suggesting no acute metabolic or hepatic effects at this dosage and duration.

Why this might work

Tongkat Ali extract releases more testosterone from its binding protein and reduces stress hormone levels, which shifts the body's balance toward building up tissues and away from breaking them down, but this shift does not change weight, fat, or liver function.

Supported mechanismbased on 1 study

What the research says

1 study
  1. Study: Effect of Tongkat Ali on stress hormones and psychological mood state in moderately stressed subjects

    The study found that taking 200 mg of Tongkat Ali daily for four weeks didn’t change body fat or cause any noticeable liver or metabolic changes in stressed adults, which matches the claim that it has no immediate effect on weight, fat, or liver health.

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.