Does adding leucine to a snack make you feel fuller?
The Effects of Reduced Protein‐Nutrition Bars with Enhanced Leucine Content on Ratings of Fullness in Healthy Women
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists tested if adding different amounts of a protein part called leucine to small snacks makes people feel fuller or less hungry.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 557 / 90
Evidence Score
Participants are randomly assigned to treatment or control groups, minimizing bias. Considered the gold standard for testing whether an intervention causes an effect.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists tested if adding different amounts of a protein part called leucine to small snacks makes people feel fuller or less hungry.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 557 / 90
Evidence Score
Participants are randomly assigned to treatment or control groups, minimizing bias. Considered the gold standard for testing whether an intervention causes an effect.
Related Content
Claims (5)
Consuming 2 grams of leucine with a low-protein meal reduces hunger compared to not taking leucine, and increasing the dose up to 2 grams increases this reduction in hunger.
Different protein sources suppress appetite to different degrees based on how much leucine they contain.
A nutrition bar with 2 grams of leucine peptide increases feelings of fullness after eating by 14.2% compared to a similar bar without leucine peptide in healthy women.
Consuming a nutrition bar with 3 grams of leucine peptide raises plasma leucine levels by 260% compared to a bar with no leucine peptide in healthy women, but does not increase feelings of fullness.
Eating leucine-enriched nutrition bars with 0, 2, or 3 grams of leucine does not change how hungry healthy women feel shortly after consumption.