Metabolism Review

Evidence map

Nutrient timing: what the evidence base looks like

8 publications, 2 of them trials and 4 syntheses. This page describes the shape of that literature rather than summarising its conclusions.

Updated 3 min read 8 citations

What the evidence on nutrient timing is made of Of 8 publications on this topic, the breakdown by study type: 4 meta-analysis, 2 randomised trial, 2 review. 422meta-analysis (4)randomised trial (2)review (2)
8 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 nutrient timing literature was published Publication years for the 8 papers on this topic, grouped into bands from before 2015 through to 2023 onwards. Before 20154 papers2023 onwards2 papers2020-20222 papers
Still active. The most recent paper here is from 2024, 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. The effects of dietary macronutrient composition on resting energy expenditure following active weight loss: A systematic review and meta-analysis — Ho DKN, Liao YC, Mayasari NR et al., 2024, meta-analysis
  2. Chronic Obstructive Pulmonary Disease: A 2019 Evidence Analysis Center Evidence-Based Practice Guideline — Hanson C, Bowser EK, Frankenfield DC et al., 2021, systematic review
  3. Do Lower-Carbohydrate Diets Increase Total Energy Expenditure? An Updated and Reanalyzed Meta-Analysis of 29 Controlled-Feeding Studies — Ludwig DS, Dickinson SL, Henschel B et al., 2021, meta-analysis
  4. Does increased exercise or physical activity alter ad-libitum daily energy intake or macronutrient composition in healthy adults? A systematic review — Donnelly JE, Herrmann SD, Lambourne K et al., 2014, systematic review
  5. A Randomized, Crossover Trial Assessing Appetite, Energy Metabolism, Blood Biomarkers, and Ad Libitum Food Intake Responses to a Mid-Morning Pecan Snack vs. an Equicaloric High-Carbohydrate Snack in Healthy Volunteers with Overweight/Obesity — Peters JC, Breen JA, Pan Z et al., 2024, randomised controlled trial
  6. Dietary composition and physiologic adaptations to energy restriction — Agus MS, Swain JF, Larson CL et al., 2000, randomised controlled trial
  7. Genes, lifestyles and obesity — Marti A, Moreno-Aliaga MJ, Hebebrand J et al., 2004, review
  8. Macronutrient composition and food selection — Flatt JP, 2001, review
How much research is there on nutrient timing?
8 publications are indexed here, of which 2 are trials and 4 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 2024. 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. The effects of dietary macronutrient composition on resting energy expenditure following active weight loss: A systematic review and meta-analysis Ho DKN, Liao YC, Mayasari NR, et al. · Obesity reviews : an official journal of the International Association for the Study of Obesity · 2024 · Meta-analysis DOIPubMed 38697953
  2. Chronic Obstructive Pulmonary Disease: A 2019 Evidence Analysis Center Evidence-Based Practice Guideline Hanson C, Bowser EK, Frankenfield DC, et al. · Journal of the Academy of Nutrition and Dietetics · 2021 · Systematic review DOIPubMed 32081589
  3. Do Lower-Carbohydrate Diets Increase Total Energy Expenditure? An Updated and Reanalyzed Meta-Analysis of 29 Controlled-Feeding Studies Ludwig DS, Dickinson SL, Henschel B, et al. · The Journal of nutrition · 2021 · Meta-analysis DOIPubMed 33274750Full text
  4. Does increased exercise or physical activity alter ad-libitum daily energy intake or macronutrient composition in healthy adults? A systematic review Donnelly JE, Herrmann SD, Lambourne K, et al. · PloS one · 2014 · Systematic review DOIPubMed 24454704Full text
  5. A Randomized, Crossover Trial Assessing Appetite, Energy Metabolism, Blood Biomarkers, and Ad Libitum Food Intake Responses to a Mid-Morning Pecan Snack vs. an Equicaloric High-Carbohydrate Snack in Healthy Volunteers with Overweight/Obesity Peters JC, Breen JA, Pan Z, et al. · Nutrients · 2024 · Randomised controlled trial DOIPubMed 38999832Full text
  6. Dietary composition and physiologic adaptations to energy restriction Agus MS, Swain JF, Larson CL, et al. · The American journal of clinical nutrition · 2000 · Randomised controlled trial DOIPubMed 10731495Full text
  7. Genes, lifestyles and obesity Marti A, Moreno-Aliaga MJ, Hebebrand J, et al. · International journal of obesity and related metabolic disorders : journal of the International Association for the Study of Obesity · 2004 · Review DOIPubMed 15543216
  8. Macronutrient composition and food selection Flatt JP · Obesity research · 2001 · Review DOIPubMed 11707551