Weight Loss Evidence

Evidence map

Maintenance: what the evidence base looks like

11 publications, 4 of them trials and 6 syntheses. This page describes the shape of that literature rather than summarising its conclusions.

Updated 4 min read 11 citations

What the evidence on maintenance is made of Of 11 publications on this topic, the breakdown by study type: 6 meta-analysis, 4 randomised trial, 1 review. 641meta-analysis (6)randomised trial (4)review (1)
11 publications, by study type. Volume is not strength — the same count can be a settled question or a pile of commentary, and which one it is depends almost entirely on this breakdown. Harvested from PubMed and Crossref; publication type as recorded by the source.

What this literature is made of

The synthesis is ahead of the primary literature here — reviews and meta-analyses drawing on a modest number of underlying studies. Treat confident conclusions with the caution the sample size deserves.

The distinction that matters most is between synthesis and primary research. A meta-analysis pools trials and is the closest thing to a settled answer a field produces. A narrative review is one group's reading of the same material and can be selective without being dishonest. Counting them together, which most citation counts do, obscures exactly the thing you want to know.

When the maintenance literature was published Publication years for the 11 papers on this topic, grouped into bands from before 2015 through to 2023 onwards. 2020-20224 papers2015-20194 papersBefore 20152 papers2023 onwards1 papers
Still active. The most recent paper here is from 2025, so this is a field where an answer written today may not hold for long. Publication years as recorded by PubMed and Crossref.

How this page is built

Everything above is computed from the citations this site harvested from PubMed and Crossref, not written by hand. When the weekly harvest finds a new paper on this topic, these counts change and the characterisation changes with them. That is the point: a hand-written claim about how strong an evidence base is starts decaying the day it is written.

Publication type is taken as the source records it. That is imperfect — journals label inconsistently, and a paper indexed as a "review" may be a systematic one — so treat the bands as approximate. They are accurate enough to distinguish a trial literature from a commentary literature, which is the distinction that matters.

The strongest work on this topic

Ordered by study design first, then recency. The full set is listed in the references below.

  1. Weight Maintenance after Dietary Weight Loss: Systematic Review and Meta-Analysis on the Effectiveness of Behavioural Intensive Intervention — Flore G, Preti A, Carta MG et al., 2022, meta-analysis
  2. Successful weight loss maintenance: A systematic review of weight control registries — Paixão C, Dias CM, Jorge R et al., 2020, systematic review
  3. Determinants of weight loss maintenance: a systematic review — Varkevisser RDM, van Stralen MM, Kroeze W et al., 2019, systematic review
  4. Lifestyle changes in women with polycystic ovary syndrome — Lim SS, Hutchison SK, Van Ryswyk E et al., 2019, meta-analysis
  5. European Guidelines for Obesity Management in Adults — Yumuk V, Tsigos C, Fried M et al., 2015, clinical guideline
  6. Pharmacotherapy for obesity — Ioannides-Demos LL, Proietto J, McNeil JJ, 2005, meta-analysis
  7. Effect of sweeteners and sweetness enhancers on weight management and gut microbiota composition in individuals with overweight or obesity: the SWEET study — Pang MD, Kjølbæk L, Bastings JJAJ et al., 2025, randomised controlled trial
  8. Exploratory analysis of eating- and physical activity-related outcomes from a randomized controlled trial for weight loss maintenance with exercise and liraglutide single or combination treatment — Jensen SBK, Janus C, Lundgren JR et al., 2022, randomised controlled trial
  9. Effect of intensive lifestyle intervention on bodyweight and glycaemia in early type 2 diabetes (DIADEM-I): an open-label, parallel-group, randomised controlled trial30117-0) — Taheri S, Zaghloul H, Chagoury O et al., 2020, randomised controlled trial
  10. Achieving weight-loss maintenance — James WP, 2001, randomised controlled trial
How much research is there on maintenance?
11 publications are indexed here, of which 4 are trials and 6 are syntheses.
Does more research mean a stronger conclusion?
No. Composition matters more than volume — five randomised trials support a claim far better than fifty commentaries, and citation counts do not distinguish between them.
How current is this?
The most recent paper indexed here is from 2025. The set is refreshed weekly from PubMed and Crossref.
Why does this page not tell me the answer?
Because summarising a literature into a conclusion requires reading it, and doing that automatically is how confident nonsense gets published. This page tells you how much weight a conclusion could bear; the articles on this site do the interpreting.

References

Every citation below links to the original peer-reviewed record on PubMed or via DOI. Nothing here is a substitute for medical advice.

  1. Weight Maintenance after Dietary Weight Loss: Systematic Review and Meta-Analysis on the Effectiveness of Behavioural Intensive Intervention Flore G, Preti A, Carta MG, et al. · Nutrients · 2022 · Meta-analysis DOIPubMed 35334917Full text
  2. Successful weight loss maintenance: A systematic review of weight control registries Paixão C, Dias CM, Jorge R, et al. · Obesity reviews : an official journal of the International Association for the Study of Obesity · 2020 · Systematic review DOIPubMed 32048787Full text
  3. Lifestyle changes in women with polycystic ovary syndrome Lim SS, Hutchison SK, Van Ryswyk E, et al. · The Cochrane database of systematic reviews · 2019 · Meta-analysis DOIPubMed 30921477Full text
  4. Determinants of weight loss maintenance: a systematic review Varkevisser RDM, van Stralen MM, Kroeze W, et al. · Obesity reviews : an official journal of the International Association for the Study of Obesity · 2019 · Systematic review DOIPubMed 30324651Full text
  5. European Guidelines for Obesity Management in Adults Yumuk V, Tsigos C, Fried M, et al. · Obesity facts · 2015 · Clinical guideline DOIPubMed 26641646Full text
  6. Pharmacotherapy for obesity Ioannides-Demos LL, Proietto J, McNeil JJ · Drugs · 2005 · Meta-analysis DOIPubMed 15977970
  7. Effect of sweeteners and sweetness enhancers on weight management and gut microbiota composition in individuals with overweight or obesity: the SWEET study Pang MD, Kjølbæk L, Bastings JJAJ, et al. · Nature metabolism · 2025 · Randomised controlled trial DOIPubMed 41057614Full text
  8. Exploratory analysis of eating- and physical activity-related outcomes from a randomized controlled trial for weight loss maintenance with exercise and liraglutide single or combination treatment Jensen SBK, Janus C, Lundgren JR, et al. · Nature communications · 2022 · Randomised controlled trial DOIPubMed 35970829Full text
  9. Effect of intensive lifestyle intervention on bodyweight and glycaemia in early type 2 diabetes (DIADEM-I): an open-label, parallel-group, randomised controlled trial Taheri S, Zaghloul H, Chagoury O, et al. · The lancet. Diabetes & endocrinology · 2020 · Randomised controlled trial DOIPubMed 32445735
  10. Achieving weight-loss maintenance James WP · Postgraduate medicine · 2001 · Randomised controlled trial DOIPubMed 19667564
  11. The Effects of Exercise and Physical Activity on Weight Loss and Maintenance Swift DL, McGee JE, Earnest CP, et al. · Progress in cardiovascular diseases · 2018 · Review DOIPubMed 30003901