publications by categories in reversed chronological order. generated by jekyll-scholar.


  1. neurobiol_aging.jpg
    A blood biomarker of the pace of aging is associated with brain structure: replication across three cohorts
    Ethan T. Whitman, Calen P. Ryan, Wickliffe C. Abraham, and 17 more authors
    Neurobiology of Aging, Apr 2024
  2. JAMA_Network_Open_Journal_Cover_Image.png
    Educational mobility, pace of aging, and lifespan among participants in the Framingham Heart Study
    Gloria H. J. Graf, Allison E. Aiello, Avshalom Caspi, and 7 more authors
    JAMA Network Open, Mar 2024
  3. nature_aging_ryan_belsky.png
    Epigenetic clock work ticks forward
    C. P. Ryan, and D. W. Belsky
    Nature Aging, Jan 2024
    Publisher: Nature Publishing Group
  4. Bareja_schema.jpg
    Liver-derived plasminogen mediates muscle stem cell expansion during caloric restriction through the plasminogen receptor Plg-RKT
    Akshay Bareja, David E. Lee, Tricia Ho, and 21 more authors
    Cell Reports, Mar 2024
  5. Thomas_et_al.jpeg
    Diet, Pace of Biological Aging, and Risk of Dementia in the Framingham Heart Study
    Aline Thomas, Calen P. Ryan, Avshalom Caspi, and 6 more authors
    Annals of Neurology, Feb 2024
  6. GeroscienceCover2.jpg
    DNA methylation-based estimators of telomere length show low correspondence with paternal age at conception and other measures of external validity of telomere length
    Dan T. A. Eisenberg, Calen P. Ryan, Nanette R. Lee, and 6 more authors
    GeroScience, Mar 2024
  7. hastings_coverimage.jpg
    Effect of long-term caloric restriction on telomere length in healthy adults: CALERIE™ 2 trial analysis
    Waylon J. Hastings, Qiaofeng Ye, Sarah E. Wolf, and 11 more authors
    Aging Cell, Mar 2024
  8. PNAS_temporary.png
    Pregnancy is linked to faster epigenetic aging in young women
    Calen P. Ryan, Nanette R. Lee, Delia B. Carba, and 6 more authors
    Proceedings of the National Academy of Sciences, Apr 2024
    Publisher: Proceedings of the National Academy of Sciences


  1. nature_aging_ryan.png
    Effect of long-term caloric restriction on DNA methylation measures of biological aging in healthy adults from the CALERIE trial
    R. Waziry, Calen P. Ryan, D. L. Corcoran, and 19 more authors
    Nature Aging, Feb 2023
    Publisher: Nature Publishing Group
  2. AJHB_2023_McDade.jpeg
    Association between infectious exposures in infancy and epigenetic age acceleration in young adulthood in metropolitan Cebu, Philippines
    Thomas W. McDade, Calen P. Ryan, Linda S. Adair, and 7 more authors
    American Journal of Human Biology, Nov 2023
  3. cohort-study.jpeg
    Reply to Nwanaji-Enwerema, 2023, “Exposome and low birthweight selection bias considerations in early life infections and epigenetic age relationships”
    Thomas W. McDade, Calen P. Ryan, Linda S. Adair, and 7 more authors
    American Journal of Human Biology, Nov 2023


  1. breastfeeding.jpg
    Immune cell type and DNA methylation vary with reproductive status in women: possible pathways for costs of reproduction
    Calen P. Ryan, Meaghan J Jones, Rachel D Edgar, and 4 more authors
    Evolution, Medicine, and Public Health, Jan 2022
  2. Kuzawa_screenshot.png
    Birth weight and maternal energy status during pregnancy as predictors of epigenetic age acceleration in young adults from metropolitan Cebu, Philippines
    Christopher W. Kuzawa, Calen P. Ryan, Linda S. Adair, and 7 more authors
    Epigenetics, May 2022
    Publisher: Taylor & Francis _eprint:
  3. jin-yeong-kim-f98dJ8VkuTk-unsplash.jpg
    Climatic and biotic influences on the distributions of Calliphora augur and Calliphora dubia (Diptera: Calliphoridae)
    Aidan P Johnson, Calen P Ryan, and James F Wallman
    Austral Entomology, May 2022
  4. Fig1_Gestation_Age.png
    Maternal epigenetic clocks measured during pregnancy do not predict gestational age at delivery or offspring birth outcomes: a replication study in metropolitan Cebu, Philippines
    Calen P. Ryan, Raviraj J. Rege, Nanette R. Lee, and 6 more authors
    Clinical Epigenetics, Dec 2022


  1. leila-boujnane-_pKFkmTzDiA-unsplash.jpg
    The temporary cost of dominance
    Calen P. Ryan, and Christopher W Kuzawa
    eLife, Apr 2021
    Publisher: eLife Sciences Publications, Ltd


  1. Figure_1_GEI.jpg
    Germline epigenetic inheritance: Challenges and opportunities for linking human paternal experience with offspring biology and health
    Calen P. Ryan, and Christopher W. Kuzawa
    Evolutionary Anthropology: Issues, News, and Reviews, Apr 2020
  2. clhns.jpeg
    Evolutionary life history theory as an organising framework for cohort studies: insights from the Cebu Longitudinal Health and Nutrition Survey
    Christopher W. Kuzawa, Linda Adair, Sonny A. Bechayda, and 12 more authors
    Annals of Human Biology, Feb 2020
  3. AJHB_v33_i3_CoverPDF.jpeg
    “Epigenetic clocks”: Theory and applications in human biology
    Calen P. Ryan
    American Journal of Human Biology, Feb 2020
  4. Shirazi_plots.png
    Parity predicts biological age acceleration in post-menopausal, but not pre-menopausal, women
    Talia N. Shirazi, Waylon J. Hastings, Asher Y. Rosinger, and 1 more author
    Scientific Reports, Nov 2020
    Number: 1 Publisher: Nature Publishing Group


  1. STR_CPR_cropped400.png
    Tandem repeat disorders
    Calen P. Ryan
    Evolution, Medicine, and Public Health, Jan 2019
  2. four_way_SES_venn.png
    Genome-wide analysis of DNA methylation in relation to socioeconomic status during development and early adulthood
    Thomas W. McDade, Calen P. Ryan, Meaghan J. Jones, and 5 more authors
    American Journal of Physical Anthropology, Feb 2019


  1. CoR_1.png
    Reproduction predicts shorter telomeres and epigenetic age acceleration among young adult women
    Calen P. Ryan, M. Geoffrey Hayes, Nanette R. Lee, and 5 more authors
    Scientific Reports, Dec 2018


  1. gettler.png
    The role of testosterone in coordinating male life history strategies: The moderating effects of the androgen receptor CAG repeat polymorphism
    Lee T. Gettler, Calen P. Ryan, Dan T. A. Eisenberg, and 5 more authors
    Hormones and Behavior, Jan 2017
  2. AR_1_Fig1.jpeg
    Androgen receptor CAG repeat polymorphism and hypothalamic-pituitary-gonadal function in Filipino young adult males
    Calen P. Ryan, Thomas W. McDade, Lee T. Gettler, and 4 more authors
    American Journal of Human Biology, Jan 2017
  3. AR_2_Fig2.jpeg
    Androgen receptor polyglutamine repeat length (AR-CAGn) modulates the effect of testosterone on androgen-associated somatic traits in Filipino young adult men
    Calen P. Ryan, Alexander V. Georgiev, Thomas W. McDade, and 6 more authors
    American Journal of Physical Anthropology, Mar 2017
  4. AJPA_2017_2D4D.jpeg
    Second-to-fourth digit ratio (2D:4D) is unrelated to measures of somatic reproductive effort among young men from Cebu, the Philippines: GEORGIEV ET AL.
    Alexander V. Georgiev, Calen P. Ryan, Lee T. Gettler, and 2 more authors
    American Journal of Physical Anthropology, Mar 2017
  5. mother_daughter.png
    Like mother, like daughter: heritability of female Richardson’s ground squirrel Urocitellus richardsonii cortisol stress responses
    Kevin R. Bairos-Novak, Calen P. Ryan, Angela R. Freeman, and 2 more authors
    Current Zoology, Mar 2017
  6. Inflammation_Volcano(3).jpeg
    Social and physical environments early in development predict DNA methylation of inflammatory genes in young adulthood
    Thomas W. McDade, Calen P. Ryan, Meaghan J. Jones, and 7 more authors
    Proceedings of the National Academy of Sciences, Jul 2017
  7. ajhb_2d4d.png
    Is early postnatal growth velocity, a proxy of minipubertal androgen action, related to adult second-to-fourth digit (2D:4D) ratios in men? A test in Cebu, Philippines
    Alexander V. Georgiev, Calen P. Ryan, Judith B. Borja, and 1 more author
    American Journal of Human Biology, Jul 2017


  1. hsp90.png
    Hsp90 and physiological stress are linked to autonomous transposon mobility and heritable genetic change in nematodes
    Calen P. Ryan, Jeremy C. Brownlie, and Steve Whyard
    Genome Biology and Evolution, Jul 2016


  1. prolactin_2.png
    Uncoupling clutch size, prolactin, and luteinizing hormone using experimental egg removal
    Calen P. Ryan, Alistair Dawson, Peter J. Sharp, and 1 more author
    General and Comparative Endocrinology, Mar 2015


  1. ethology_2014.jpeg
    Shyness–Boldness, but not Exploration, Predicts Glucocorticoid Stress Response in Richardson’s Ground Squirrels (Urocitellus richardsonii)
    Dawson Clary, Lindsay J. Skyner, Calen P. Ryan, and 3 more authors
    Ethology, Nov 2014
  2. PPP2.gif
    Maternal Gestational Cortisol and Testosterone Are Associated with Trade-Offs in Offspring Sex and Number in a Free-Living Rodent (Urocitellus richardsonii)
    Calen P. Ryan, W. Gary Anderson, Charlene N. Berkvens, and 1 more author
    PLoS ONE, Oct 2014
  3. validation.png
    Validation of a radioimmunoassay-based fecal corticosteroid assay for Richardson’s ground squirrels Urocitellus richardsonii and behavioural correlates of stress
    J.F. Hare, C.P. Ryan, C. Enright, and 4 more authors
    Current Zoology, Oct 2014
  4. prolactin_1.png
    Circulating breeding and pre-breeding prolactin and LH are not associated with clutch size in the zebra finch (Taeniopygia guttata)
    Calen P. Ryan, Alistair Dawson, Peter J. Sharp, and 2 more authors
    General and Comparative Endocrinology, Jun 2014


  1. AR_distribution.png
    Androgen receptor polyglutamine repeat number: models of selection and disease susceptibility
    Calen P. Ryan, and Bernard J. Crespi
    Evolutionary Applications, Jun 2013
  2. mosquito_dsrna.jpg
    Oral delivery of double-stranded RNA in larvae of the yellow fever mosquito, Aedes aegypti: Implications for pest mosquito control
    Aditi D. Singh, Sylvia Wong, Calen P. Ryan, and 1 more author
    Journal of Insect Science, Jun 2013


  1. Beh_Ecol.jpg
    Stress-induced sex ratios in ground squirrels: support for a mechanistic hypothesis
    Calen P. Ryan, W. Gary Anderson, Laura E. Gardiner, and 1 more author
    Behavioral Ecology, Feb 2012


  1. CBP_a.jpg
    Gastro-intestinal handling of water and solutes in three species of elasmobranch fish, the white-spotted bamboo shark, Chiloscyllium plagiosum, little skate, Leucoraja erinacea and the clear nose skate Raja eglanteria
    W Gary Anderson, Patricia J Dasiewicz, Suadi Liban, and 4 more authors
    Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology, Apr 2010