Adding HMB to EPA/DHA supplementation for 10 weeks increases postabsorptive net protein breakdown in COPD patients
In a randomized double-blind placebo-controlled trial, 46 patients with COPD received daily EPA/DHA, EPA/DHA plus HMB, or placebo for 10 weeks. The HMB plus EPA/DHA group showed a significant increase in postabsorptive net protein breakdown (p=0.028), while EPA/DHA alone did not, suggesting enhanced protein turnover cycling associated with lean soft tissue gain.
This article is automatically generated from the structured evidence profile behind the claim above. Scores reflect the quality and quantity of available research, not clinical advice.
Adding HMB to EPA/DHA supplementation for 10 weeks increases postabsorptive net protein breakdown in COPD patients The current body of evidence comprises 1 study, including 1 randomized controlled trial. EvidenceHub rates the overall confidence at 42/100 (low).
The Claim
Adding HMB to EPA/DHA supplementation for 10 weeks increases postabsorptive net protein breakdown in COPD patients
This conclusion is most relevant to: Patients with COPD (GOLD stages II-IV, n=46).
What the Research Shows
The conclusion draws on 1 linked study. Highlights from the cited literature:
- ▸Functional and metabolic effects of omega-3 polyunsaturated fatty acid supplementation and the role of β-hydroxy-β-methylbutyrate addition in chronic obstructive pulmonary disease: A randomized clinical trial. (Clinical nutrition (Edinburgh, Scotland), 2024) —
How It Works
The proposed biological pathway:
- ▸HMB plus EPA/DHA supplementation increases whole body production of glutamine, taurine, and tyrosine
- ▸Reduces proinflammatory cytokines (IL-2, IL-17, IL-6, IL-12P40, TNF-β)
- ▸Enhances protein turnover cycling
- ▸Result: Increased net protein breakdown and lean soft tissue gain
Who Might Benefit
Evidence fit by population:
- ▸Patients with COPD (GOLD stages II-IV, n=46)
Recommended Dose
2.0 g EPA/DHA and 3.0 g Ca-HMB daily
Limitations & Caveats
Important context when interpreting this evidence:
- ▸Small sample size (n=46) may limit generalizability
- ▸Whether HMB alone or synergistic with EPA/DHA causes fat loss remains unclear
Frequently Asked Questions
What is the primary finding of this study?▼
Adding HMB to EPA/DHA supplementation for 10 weeks increases net protein breakdown in COPD patients, indicating enhanced protein turnover, while EPA/DHA alone does not.
How does HMB plus EPA/DHA affect body composition?▼
Both EPA/DHA and HMB plus EPA/DHA increased lean soft tissue, but only HMB plus EPA/DHA reduced whole body and extremity fat mass.
What is the recommended dose of EPA/DHA and HMB?▼
The study used 2.0 g of EPA/DHA and 3.0 g of Ca-HMB daily for 10 weeks.
Are there any anti-inflammatory effects observed?▼
Yes, the HMB plus EPA/DHA group showed reductions in several proinflammatory cytokines including IL-2, IL-6, IL-17, IL-12P40, and TNF-β.
References
- 1.Engelen MPKJ, Simbo SY, Ruebush LE, Thaden JJ, Ten Have GAM, Harrykissoon RI, Zachria AJ, Calder PC, Pereira SL, Deutz NEP. “Functional and metabolic effects of omega-3 polyunsaturated fatty acid supplementation and the role of β-hydroxy-β-methylbutyrate addition in chronic obstructive pulmonary disease: A randomized clinical trial..” Clinical nutrition (Edinburgh, Scotland), 2024. PMID: 39181037 DOI: 10.1016/j.clnu.2024.08.004