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Evaluating the social return on investment of nature-based social prescribing to alleviate loneliness

A randomized controlled trial in Barcelona

Bibliographic Data

ID22068790
AuthorsVeronika Papon (0009-0009-1622-2744, Austrian Institute for Health Technology Assessment GmbH, corresponding author), Sibylle Puntscher (0000-0002-0591-7067, Austrian Institute for Health Technology Assessment GmbH), Montse Masó-Aguado (Universitat de Vic - Universitat Central de Catalunya), Marjan Arvandi (0000-0002-0976-9479, Austrian Institute for Health Technology Assessment GmbH), Beate Jahn (0000-0002-6764-6362, Austrian Institute for Health Technology Assessment GmbH), Mat Jones (0000-0003-3692-8065, University of the West of England), Amy Beardmore (0000-0002-7492-2521, University of the West of England), Marc Olivella-Cirici (0000-0001-9827-6790, Ekaterinburg Research Institute of Viral Infections), Laia Briones-Buixassa (Universitat de Vic - Universitat Central de Catalunya), Laura Coll-Planas (Universitat de Vic - Universitat Central de Catalunya), Jacquelyn Litt (0000-0001-8593-5400, Universitat Pompeu Fabra), Jill S Litt (Institute for Global Health (ISGlobal), Barcelona Biomedical Research Park (PRBB)), Uwe Siebert (0000-0001-6425-7671, Institute of Public Health, Medical Decision Making and Health Technology Assessment, Department of Public Health, Health Services Research and Health Technology Assessment, UMIT TIROL - University for Health Sciences and Technology), Ursula Rochau (0000-0003-1077-2058, Institute of Public Health, Medical Decision Making and Health Technology Assessment, Department of Public Health, Health Services Research and Health Technology Assessment, UMIT TIROL - University for Health Sciences and Technology)
Year2026
Volume14
Pages1774155-1774155
Publication date2026-05-25
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueFrontiers in Public Health (JOURNAL)
Journal identifiersISSN: 2296-2565 • E-ISSN: 2296-2565
PublisherFrontiers Media SA (PUBLISHER • CH)
DOI10.3389/fpubh.2026.1774155
PMID42267287
OpenAlexW7162302018
LanguageEN
References cited34

Introduction: Loneliness is associated with adverse health outcomes, including cardiovascular diseases, depression, and premature mortality, and is unequally distributed according to social determinants. Prescribing individuals to community-based interventions in nature, often described as nature-based social prescribing (NBSP), has emerged as a promising intervention to address loneliness. This study aims to quantify the social return of investment (SROI) of the "Friends in Nature" (FiN) intervention designed to alleviate loneliness. Methods: Following key guidelines, we performed a SROI study for a NBSP intervention compared to usual care alongside the FiN trial conducted in Barcelona within the EU-H2020 RECETAS project. The SROI ratio, which measures the social value generated per monetary unit invested, and the net present value, which reflects the difference between social value and investment costs, were estimated. Results: A social return of EUR 1.48 per EUR 1 invested in the NBSP intervention was generated. The net present value was EUR 8,585 per FiN and EUR 8,496 per UC participant. The SROI ratios remained positive and above one in most sensitivity and scenario analyses, ranging from EUR 0.83 to 13.18 per 1 EUR invested. Discussion: We conducted a SROI analysis to quantify the broader benefits of investing in a NBSP intervention to reduce loneliness. This SROI ratio enables decision-makers to consider social value alongside financial value, thereby facilitating more comprehensive comparisons of public health investments. Clinical trial registration: Trial Registration: ClinicalTrials.gov, ID: NCT05488496. Registered 29 July 2022

Health care · Loneliness · Psychological intervention · Randomized controlled trial · Return on investment · Art Therapy and Mental Health · Health disparities and outcomes · Urban Green Space and Health

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Citation velocityhistorical
Highly citedNo
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