Body weight

Body weight has been studied in 17 papers since 2016: 7 observational studies in people, 7 in animals, 3 reviews; 1 in the past year. The newest paper, Jun 23, 2026: “Lifestyle Factors Associated with Osteoporosis Risk”.

Exposure

17 papers study it8 findingsUpdated

MeSH

See all 17

“we found positive associations (all p ≤ 0.020) of body weight (adj. R2 = 0.398; β = 0.11)”
Growth differentiating factor-15 and adiposity in young adults: The African-PREDICT studyInternational journal of obesity (2005)2021doi:10.1038/s41366-021-00803-8

None of its findings points the other way.

  • 6 independent labs in 5 countries
  • Funders: National Institute on Aging and others
  • 2 of 7 findings with company ties
  • Humans7
  • Animals7

What did studies of Body weight find?

1

Studies of Body weight measured 1 outcome; the most studied are post-operative cognitive dysfunction (1 study).

Post-operative cognitive dysfunction

no changein humans1RR 0.99

1 study
  1. Body weight showed no clear effect on post-operative cognitive dysfunction in humans (body weight analysed continuously) (RR 0.99 per kg (95% CI 0.89–1.09)).

    “relative risk 0.99 per kg; 95% confidence interval 0.89, 1.09; p = 0.83”

    Reviewbody weight analysed continuouslyper kg

    Obesity and post-operative cognitive dysfunction: a systematic review and meta-analysis

    Diabetes/metabolism research and reviews

More on Post-operative cognitive dysfunction

What is Body weight linked with?

7

Studies link Body weight with 7 measures, most often platelet count (1 study), GDF-15 (1) and plasma neurofilament light chain (1).

Platelet count

downin dogs1

1 study
  1. Body weight is associated with platelet count in dogs.

    “Platelet count had a negative association with body weight.”

    Animalsn = 47

    The companion dog as a model for inflammaging: a cross-sectional pilot study

    GeroScience

More on Platelet count

GDF-15

upin humans1

1 study
  1. Body weight is associated with GDF-15 in the overweight/obese group (adj. R2 = 0.398; β = 0.11).

    “we found positive associations (all p ≤ 0.020) of body weight (adj. R2 = 0.398; β = 0.11)”

    Humansin the overweight/obese groupn = 514

    Growth differentiating factor-15 and adiposity in young adults: The African-PREDICT study

    International journal of obesity (2005)

More on GDF-15

Plasma neurofilament light chain

downin dogs1

1 study
  1. Body weight is associated with plasma neurofilament light chain in dogs (lower body weight associated with higher pNfL) (P < 0.001).

    “decreased body weight (P < 0.001)”

    Animalslower body weight associated with higher pNfLn = 55

    Neurofilament light plasma concentration positively associates with age and negatively associates with weight and height in the dog

    Neuroscience letters

More on Plasma neurofilament light chain

Epigenetic age

upin mice1

1 study
  1. Body weight is associated with epigenetic age in mice.

    “Both higher BW and the HFD were associated with accelerated epigenetic aging.”

    Animalsliverfemalesn = 70

    Body weight and high-fat diet are associated with epigenetic aging in female members of the BXD murine family

    Aging cell

More on Epigenetic age

Sphingomyelin

upin dogs1

1 study
  1. Body weight is associated with sphingomyelin in dogs (independent of age).

    “sphingomyelins were significantly higher in large, short-lived dogs, independent of age”

    Animalsindependent of age

    Alterations of Lipid Metabolism With Age and Weight in Companion Dogs

    The journals of gerontology. Series A, Biological sciences and medical sciences

More on Sphingomyelin

Tryptophan pathway metabolites

downin dogs1

1 study
  1. Body weight is associated with tryptophan pathway metabolites in dogs after controlling for location.

    “tryptophan metabolism emerged as significantly associated with weight of the dogs, with small dogs having significantly higher levels of tryptophan pathway metabolites”

    Animalsafter controlling for location

    Tryptophan metabolism is differently regulated between large and small dogs

    GeroScience

More on Tryptophan pathway metabolites

Mortality

upin dogs1HR 1.19

1 study
  1. Body weight raises the risk of mortality in dogs (body weight measured at 10 years of age) (HR = 1.19 per additional kg, P = 0.004).

    “for each additional kg of BW at 10 years, dogs had a 19% higher hazard (HR = 1.19, P = 0.004)”

    Animalsbody weight measured at 10 years of agen = 39

    Body weight at 10 years of age and change in body composition between 8 and 10 years of age were related to survival in a longitudinal study of 39 Labrador retriever dogs

    Acta veterinaria Scandinavica

Funding

10 grants since 2019

National Institute of Diabetes and Digestive and Kidney Diseases$3.9MNational Cancer Institute$4.4MJapan Society for the Promotion of Science¥6.5M

Latest

Nov 2025: 0Dec 2025: 0Jan 2026: 0Feb 2026: 0Mar 2026: 0Apr 2026: 0May 2026: 0Jun 2026: 1Jul 2026: 0Aug 2026: 0Sep 2026: 0Oct 2026: 01 paper in 12 months

See all 17