Cited by 370Genetics, Aging, and Longevity in Model OrganismsDietary Effects on HealthNutrition and Health Studies

Caloric Restriction, the Traditional Okinawan Diet, and Healthy Aging: The Diet of the World's Longest‐Lived People and Its Potential Impact on Morbidity and Life Span

Open access
WILLCOX, BRADLEY J., WILLCOX, D. CRAIG, TODORIKI, HIDEMI, FUJIYOSHI, AKIRA, YANO, KATSUHIKO, HE, QIMEI, CURB, J. DAVID, SUZUKI, MAKOTO·2007·Annals of the New York Academy of Sciences

Abstract

Long-term caloric restriction (CR) is a robust means of reducing age-related diseases and extending life span in multiple species, but the effects in humans are unknown. The low caloric intake, long life expectancy, and the high prevalence of centenarians in Okinawa have been used as an argument to support the CR hypothesis in humans. However, no long-term, epidemiologic analysis has been conducted on traditional dietary patterns, energy balance, and potential CR phenotypes for the specific cohort of Okinawans who are purported to have had a calorically restricted diet. Nor has this cohort's subsequent mortality experience been rigorously studied. Therefore, we investigated six decades of archived population data on the elderly cohort of Okinawans (aged 65-plus) for evidence of CR. Analyses included traditional diet composition, energy intake, energy expenditure, anthropometry, plasma DHEA, mortality from age-related diseases, and current survival patterns. Findings include low caloric intake and negative energy balance at younger ages, little weight gain with age, life-long low BMI, relatively high plasma DHEA levels at older ages, low risk for mortality from age-related diseases, and survival patterns consistent with extended mean and maximum life span. This study lends epidemiologic support for phenotypic benefits of CR in humans and is consistent with the well-known literature on animals with regard to CR phenotypes and healthy aging.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1196/annals.1396.037

Cites

61 of 61 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The Okinawan diet is plant-based, low in calories, and characterized by substantial consumption of vegetables, legumes, and sweet potatoes.

    “The Okinawans’ diet, characterized by a substantial consumption of vegetables, legumes, and sweet potatoes, is inherently plant-based and low in calories [7,156,157,158,159,160,161].”

    From The Power of Environment: A Comprehensive Review of the Exposome's Role in Healthy Aging, Longevity, and Preventive Medicine-Lessons from Blue Zones and Cilento (2025) · cites this paper as [157]

    The Results (Table 1) show that the traditional Okinawan diet in 1949 was low in calories and dominated by sweet potatoes, with substantial legumes and other vegetables. The Discussion says the diet changed after the 1960s, so the source does not support describing Okinawans’ diet this way without a historical qualifier. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Okinawa until recently experienced among the lowest rates of CHD in the world.

    “Japanese diets have been of considerable interest, particularly from Okinawa, which until recently experienced among the lowest rates of CHD in the world.111”

    From Components of a Cardioprotective Diet: New Insights (2011) · cites this paper as [111]

  • Appropriate energy balance and little age-related weight gain are important features of the Okinawan diet pattern.

    “Appropriate energy balance and little age-related weight gain are also important features of the Okinawan diet pattern.111”

    From Components of a Cardioprotective Diet: New Insights (2011) · cites this paper as [111]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
WILLCOX, B. J., WILLCOX, D. C., TODORIKI, H., FUJIYOSHI, A., YANO, K., HE, Q., CURB, J. D., & SUZUKI, M.
Affiliations
  • University of Hawaiʻi at Mānoa (US)
  • Okinawa Prefectural College of Nursing (JP)
  • University of the Ryukyus (JP)
  • Pacific Health Research and Education Institute (US)
Corresponding author
  • WILLCOX, BRADLEY J.
  • WILLCOX, D. CRAIG
Venue
Annals of the New York Academy of Sciences
Publisher
Wiley
Published
2007-10
Volume
1114
Issue
1
Pages
434-455
ISSN
  • 0077-8923 (ISSN-L)
  • 1749-6632
OpenAlex
W2165781101
Cited by
370
References
61
Citations by year
2026: 22 · 2025: 20 · 2024: 23 · 2023: 22 · 2022: 24 · 2021: 24 · 2020: 20 · 2019: 23 · 2018: 19 · 2017: 15 · 2016: 20 · 2015: 12 · 2014: 25 · 2013: 26 · 2012: 17
FWCI
2.87
Type
journal article
Language
en
Open access
Locations
  • Annals of the New York Academy of Sciences (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (1r03ag021293-01)
  • National Institute on Aging (K08AG022788, R03AG021293-01, K08 AG22788-02, R01AG027060)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Physiology › Dietary Effects on Health
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutrition and Health Studies
Keywords
caloric restriction, Okinawan diet, healthy aging, centenarians, energy balance, lifespan extension, energy intake, energy expenditure, body mass index, survival patterns
MeSH terms
Aged, Aged, 80 and over, Aging, Animals, Haplorhini, Diet, Female, Humans, Japan, Life Expectancy, Male, Middle Aged, Morbidity, United States, Caloric Restriction

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review