Evidence map›Paper›PMID 32940695›Full record

Trial reportNutrition reviews2021

Effects of caloric restriction on human physiological, psychological, and behavioral outcomes: highlights from CALERIE phase 2.

James L Dorling, Stephan van Vliet, Kim M Huffman, William E Kraus, Manjushri Bhapkar, Carl F Pieper, Tiffany Stewart, Sai Krupa Das, Susan B Racette, Susan B Roberts and 4 more

Registry-linked trialAbstract readClinical Trial, Phase IIRandomized Controlled Trial
In one paragraph

Trial report in Nutrition reviews, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05732935 (Fasting to Provide Energy Needed to Help Adults in Need of Cognitive Enhancement), which is not on this map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT05732935 nacompletednot on this mapstarted 2023, after this paper: background citation

Fasting to Provide Energy Needed to Help Adults in Need of Cognitive Enhancement (FASTING ENHANCE)

TypeinterventionalSponsorUniversity of FloridaRan2023 to 2026Enrolled45ConditionsOverweight and Obesity, Time Restricted Feeding, Alzheimer DiseaseArmsTime Restricted Eating intervention, Successful Aging Comparison Group (LEARN)
3 · Its place in the literature

Who cites it

45 citing papers in PubMed.

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  9. Article
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  15. Increasing the health span: unique role for exercise.Journal of applied physiology (Bethesda, Md. : 1985) · 2025
    Review
  16. Review
  17. Effects of Silibinin on Delaying Aging inAntioxidants (Basel, Switzerland) · 2025
    Article
  18. Article
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

14 authors.

James L DorlingPennington Biomedical Research Center, Baton Rouge, Louisiana, USA.
Stephan van VlietPennington Biomedical Research Center, Baton Rouge, Louisiana, USA.
Kim M HuffmanDuke University School of Medicine, Durham, North Carolina, USA.
William E KrausDuke University School of Medicine, Durham, North Carolina, USA.
Manjushri BhapkarDuke University School of Medicine, Durham, North Carolina, USA.
Carl F PieperDuke University School of Medicine, Durham, North Carolina, USA.
Tiffany StewartPennington Biomedical Research Center, Baton Rouge, Louisiana, USA.
Sai Krupa DasUS Department of Agriculture, Jean Mayer Human Nutrition Research Center on Aging at Tufts University, Boston, Massachusetts, USA.
Susan B RacetteWashington University School of Medicine, St. Louis, Missouri, USA.
Susan B RobertsUS Department of Agriculture, Jean Mayer Human Nutrition Research Center on Aging at Tufts University, Boston, Massachusetts, USA.
Eric RavussinPennington Biomedical Research Center, Baton Rouge, Louisiana, USA.
Leanne M RedmanPennington Biomedical Research Center, Baton Rouge, Louisiana, USA.
Corby K MartinPennington Biomedical Research Center, Baton Rouge, Louisiana, USA.
CALERIE Study Group

Funding

Tracking & Evaluation CoreU54GM104940 · NIGMS · LSU PENNINGTON BIOMEDICAL RESEARCH CTR · PI Peter Todd Katzmarzyk · 2012 to 2026
$69.1M
Washington University Nutrition Obesity Research CenterP30DK056341 · NIDDK · WASHINGTON UNIVERSITY · PI Dominic N Reeds · 1999 to 2026
$30.2M
Research BaseP30DK072476 · NIDDK · LSU PENNINGTON BIOMEDICAL RESEARCH CTR · PI ROBERT A KESTERSON · 2005 to 2026
$26.5M
Coordinating Center for CALERIEU01AG022132 · NIA · DUKE UNIVERSITY · PI KRAUS, WILLIAM E · 2002 to 2013
$24.9M
Metabolic Adaptations to Two Year Caloric RestrictionU01AG020478 · NIA · LSU PENNINGTON BIOMEDICAL RESEARCH CTR · PI RAVUSSIN, ERIC · 2002 to 2008
$13.4M
Caloric Restriction and Aging in HumansU01AG020487 · NIA · WASHINGTON UNIVERSITY · PI HOLLOSZY, JOHN O. · 2001 to 2009
$8.9M
Dietary Energy Restriction and Metabolic Aging in HumansU01AG020480 · NIA · TUFTS UNIVERSITY BOSTON · PI ROBERTS, SUSAN B · 2002 to 2008
$8.2M
NIA NIH HHS U01 AG020478NIA NIH HHS U01 AG020480NIA NIH HHS U01 AG020487NIA NIH HHS U01 AG022132NIDDK NIH HHS P30 DK056341NIDDK NIH HHS P30 DK072476NIGMS NIH HHS U54 GM104940
6 · The paper itself

Abstract

Caloric restriction (CR) is a strategy that attenuates aging in multiple nonhuman species. The Comprehensive Assessment of Long-term Effects of Reducing Intake of Energy (CALERIE) trials are part of a research program aiming to test the effects of CR on aging and longevity biomarkers in humans. Building on CALERIE phase 1, CALERIE phase 2 (CALERIE 2) was the largest study to date to assess sustained CR in healthy humans without obesity. In a 24-month randomized controlled trial comprising 218 participants at baseline, CALERIE 2 showed that moderate CR, 11.9% on average, induced improvements in aging-related biomarkers without adversely affecting psychological or behavioral outcomes. The objectives of this report are to summarize and review the highlights of CALERIE 2 and report previously unpublished results on eating disorder symptoms and cognitive function. This article specifically summarizes the physiological, psychological, aging, behavioral, and safety results of the trial. Also provided are research directions beyond CALERIE 2 that highlight important opportunities to investigate the role of CR in aging, longevity, and health span in humans.

Indexed as

AgingCaloric RestrictionEnergy IntakeAdultBiomarkersEnergy MetabolismFemaleHumansInflammationLongevityMaleMiddle AgedNutritional StatusObesityOxidative StressYoung AdultBiomarkersaginglongevitymetabolismquality of liferandomized controlled trial

Identifiers

PMID32940695
PMCPMC7727025

What Socratic holds

Textmetadata
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.