β-alanine supplementation in adults with overweight and obesity: a randomized controlled feasibility trial

  • Joseph J. Matthews
  • , Jade V. Creighton
  • , James Donaldson
  • , Paul A. Swinton
  • , Ioannis Kyrou
  • , Srikanth Bellary
  • , Iskandar Idris
  • , Lívia Santos
  • , Mark D. Turner
  • , Craig L. Doig
  • , Kirsty J. Elliott‐Sale
  • , Craig Sale

    Research output: Contribution to journalArticlepeer-review

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    Abstract

    Objective
    Overweight and obesity are characterized by excess adiposity and systemic, chronic, low-grade inflammation, which is associated with several metabolic disorders. The aim of this study was to assess the feasibility and tolerability of β-alanine supplementation and to explore the effects on cardiometabolic health and cardiovascular, hepatic, and renal function in adults with overweight and obesity.

    Methods
    A total of 27 adults (44% female; mean [SD], age: 58 [10] years, BMI: 31.1 [2.9] kg/m2, hemoglobin A1c: 39.8 [4.3] mmol/mol) received β-alanine (4.8 g/day) or a matched placebo for 3 months. Feasibility and tolerability outcomes included adherence, side effects, recruitment, attrition, and blinding, and exploratory outcomes included biochemical markers, blood pressures, and transthoracic echocardiography parameters. Data were analyzed using a Bayesian approach presented with 95% credible intervals (CrI).

    Results
    β-alanine was well tolerated and adhered to (adherence: placebo, 0.91 [95% CrI: 0.84–0.95]; β-alanine, 0.92 [95% CrI: 0.85–0.95]), and side effects remained at or below baseline throughout. The probability that β-alanine supplementation affected cardiometabolic, cardiovascular, or clinical biochemical outcomes was low.

    Conclusions
    Sustained-release β-alanine supplementation is well tolerated and adhered to in adults with overweight and obesity. Future research should consider more advanced metabolic conditions, which may benefit from longer duration supplementation.
    Original languageEnglish
    Pages (from-to)278-288
    Number of pages11
    JournalObesity
    Volume33
    Issue number2
    Early online date12 Jan 2025
    DOIs
    Publication statusPublished - Feb 2025

    Bibliographical note

    This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium,provided the original work is properly cited.© 2025 The Author(s). Obesity published by Wiley Periodicals LLC on behalf of The Obesity Society. CC BY

    Funding

    Joseph J. Matthews was funded by Birmingham City University. Jade V. Creighton was on a match\u2010funded studentship between Nottingham Trent University and Natural Alternatives International (NAI), a company formulating and manufacturing customized nutritional supplements. Craig L. Doig received Quality Research funding for this study from Nottingham Trent University.

    Funders
    Birmingham City University

      UN SDGs

      This output contributes to the following UN Sustainable Development Goals (SDGs)

      1. SDG 3 - Good Health and Well-being
        SDG 3 Good Health and Well-being

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