Quick Answer
Protein Satiety Meta-Analysis has evidence relevant to strength of evidence and what the studies can or cannot prove, but conclusions should stay close to the cited sources. One representative finding is: Capsaicin was found to increase EE and fat oxidation, particularly at high doses, although results on the possible reduction in EI were mixed.In the present narrative review and updated meta-analysis, we evaluated whether culinary doses of RP can attenuate adaptive thermogenesis and decreased fullness during negative EB in humans.
Key Takeaways
- 01Capsaicin was found to increase EE and fat oxidation, particularly at high doses, although results on the possible reduction in EI were mixed.In the present narrative review and updated meta-analysis, we evaluated whether culinary doses of RP can attenuate adaptive thermogenesis and decreased fullness during negative EB in humans. [Ludy Mary-Jon (2026)]
- 02Overall, long-term capsaicin consumption in free-living conditions did not provide statistically significant evidence for an EE increase but did significantly reduce RQ, suggesting sustained higher fat oxidation. [Ludy Mary-Jon (2026)]
- 03Subgroup analysis by EB showed that capsaicin significantly increased EE in controlled EB (SMD = 0.74; 95% CI, 0.25 to 1.24), while the increase in EE during controlled negative EB did not reach statistical significance (SMD = 0.90; 95% CI, –0.13 to 1.94) (). [Ludy Mary-Jon (2026)]
- 04Relatively higher protein diets, which reduce total EI by lowering fat and carbohydrate intake, have shown benefits such as sustained satiety, preserved FFM, and sustained EE that counteract adaptive thermogenesis. [Ludy Mary-Jon (2026)]
The current Migaku evidence database contains 2 reusable source documents for Protein Satiety Meta-Analysis. This answer focuses on strength of evidence and what the studies can or cannot prove.
- Capsaicin was found to increase EE and fat oxidation, particularly at high doses, although results on the possible reduction in EI were mixed.In the present narrative review and updated meta-analysis, we evaluated whether culinary doses of RP can attenuate adaptive thermogenesis and decreased fullness during negative EB in humans. [Ludy Mary-Jon (2026); evidence level 3]
- Overall, long-term capsaicin consumption in free-living conditions did not provide statistically significant evidence for an EE increase but did significantly reduce RQ, suggesting sustained higher fat oxidation. [Ludy Mary-Jon (2026); evidence level 3]
- Subgroup analysis by EB showed that capsaicin significantly increased EE in controlled EB (SMD = 0.74; 95% CI, 0.25 to 1.24), while the increase in EE during controlled negative EB did not reach statistical significance (SMD = 0.90; 95% CI, –0.13 to 1.94) (). [Ludy Mary-Jon (2026); evidence level 3]
- Relatively higher protein diets, which reduce total EI by lowering fat and carbohydrate intake, have shown benefits such as sustained satiety, preserved FFM, and sustained EE that counteract adaptive thermogenesis. [Ludy Mary-Jon (2026); evidence level 3]
- Randomized clinical trials consistently report mean weight loss ranging from approximately 15% to more than 20% of total body weight, accompanied by improvements in glycemic control, cardiometabolic risk factors, and obesity-related comorbidities [,,]. [Zambrano-Villacres Raynier (2026); evidence level 3]
Evidence levels are sorting aids, not final clinical grades. Level 1 usually indicates systematic-review style evidence, level 2 indicates randomized trials or public-health guidance, and lower levels need more cautious wording.
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Sources