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Michelle (Shelley) McGuire

Michelle (Shelley) McGuire

Director and Professor


Niccolls Building, Room 105B



Mailing Address

School of Family and Consumer Sciences
University of Idaho
875 Perimeter Drive MS 3183
Moscow, ID 83844-3183

Please contact Shelley McGuire to learn about graduate student opportunities.

  • Maternal/infant nutrition
  • Human milk composition
  • Breastfeeding
  • Milk microbiome
  • Lipids
  • Postpartum anovulation
  • International nutrition
  • Leprosy

  • Lackey KA, Fehrenkamp BD, Pace RM, Williams JE, Meehan CL, McGuire MA, McGuire MK. (2021) Breastfeeding beyond twelve months: Is there evidence for health impacts? Annual Rev Nutr, in press. (invited review)
  • Pace RM, Williams JE, Robertson B, Lackey KA, Meehan CL, Price WJ, Foster JA, Sellen DW, Kamau-Mbuthia EW, Kamundia EW, Mbugua S, Moore SE, Prentice AM, Kita DG, Kvist LJ, Otoo GE, Ruiz L, Rodriguez JM, Pareja RG, McGuire MA, Bode L, McGuire MK. (2021) Variation in human milk composition is related to differences in milk and infant fecal microbial communities. Microorganisms. 9, 1153. microorganisms9061153.
  • Williams JE, McGuire MK, Meehan CL, McGuire MA, Brooker SL, Kamau-Mbuthia EW, Kamundia EW, Mbugua S, Moore SE, Prentice AM, Otoo GE, Rodriguez JM, Pareja RG, Foster JA, Sellen DW, Kita DG, Neibergs HL, Murdoch BM. (2021) Key genetic variants associated with variation of milk oligosaccharides from diverse human populations. Genomics, 113:1867-1875.
  • Ruiz L, Rubio CA, Carral CG, Quintana EJ, Lackey KA, McGuire MK, Meehan CL, Foster JA, Sellen DW, Kamau EW, Kamundia EW, Mbugua S, Moore SE, Prentice AM, Gindola D, Otoo GE, Pareja RG, Bode L, McGuire MA, Williams J, Rodriguez JM. (2021) Comparison of two approaches for the metataxonomic analysis of the human milk microbiome. Front Cell Infect Microbiol. 11:622550. doi: 10.3389/fcimb.2021.622550.
  • McGuire MK, Randall AZ, Seppo AE, Jarvinen-Seppo K, Meehan CL, Gindola D, Williams J, Sellen DW, Kamau EW, Kamundia EW, Mbugua S, Moore SE, Prentice AM, Foster JA, Otoo GE, Rodriguez JM, Pareja RG, Bode L, McGuire MA, Campo JJ. (2021) Multipathogen analysis of IgA and IgG antigen specificity for selected pathogens in milk produced by women from diverse geographical regions: The INSPIRE Study. Front. Immunol. 11:614372. doi: 10.3389/fimmu.2020.614372.
  • Pace R, Williams JE, Jarvinen K, Belfort M, Pace C, Lackey K, Gogel A, Young B, McGuire MA, Seppo A, McGuire MK. (2021) COVID-19 and human milk: SARS-CoV-2, antibodies, and neutralizing capacity. MBio, 12(1):e03192-20.
  • McGuire MK, Seppo A, Goga A, Buonsenso D, Collado MC, Donovan SM, Muller JA, Ofman G, Monroy-Valle M, O’Connor D, Pace RM, Van de Perre P. (2021) Best practices for human milk collection for COVID-19 research. Breastfeeding Medicine, 16(1):1-10.
  • McGuire MK, McGuire M. (2021) Mapping the human milk microbiome: impetus for a long-awaited renaissance in maternal and infant nutrition research? (invited commentary) J Nutr, 151(2): 278-80.
  • Committee on Scanning for New Evidence on the Nutrient Content of Human Milk (members of committee: Rasmussen KM, Azad M, Bode L, McGuire MK, Nommsen-Rivers L, Saldanha IJ). (2020) Scanning for New Evidence on the Nutrient Content of Human Milk. A Process Model for Determining Age-Specific Nutrient Requirements. Consensus Study Report. Rasmussen, Yaktine, Vorosmart, ed. Washington, DC: The National Academies Press.
  • Azad MB, Nickel NC, Bode L, Brockway M, Brown A, Chambers C, Goldhammer C, Hinde K, McGuire M, Munblit D, Patel AL, Perz-Escamilla R, Rasmussen KM, Shenker N, Young BE, Zuccolo L. (2020) Breastfeeding and the origins of health – interdisciplinary perspectives and priorities. Matern Child Nutr, 2020;e13109.
  • Lackey, KA, Pace RM, Williams JE, Bode L, Donovan S, Jarvinen KM, Seppo AE, Raiten DJ, Meehan CL, McGuire MA, McGuire MK. (2020) SARS-CoV-2 and human milk: what is the evidence? Matern Child Nutr, 2020;e13032.
  • Demmelmair H, Jimenez E, Collado MC, Salminen S, McGuire MK. (2020) Maternal and perinatal factors associated with the human milk microbiome. Curr Dev Nutr, 4(4):nzaa027

Michelle (Shelley) McGuire received her bachelor’s in biology from the University of Illinois (1986), a master’s in nutritional sciences from the University of Illinois (1988) and doctorate in human nutrition from Cornell University (1994). Her research focuses primarily on understanding better how maternal diet and nutritional status influence human milk composition and maternal/infant health during breastfeeding. Of particular interest to her research is understanding the importance of dietary lipids to maternal and infant health.

Shelley also has a long-standing interest in understanding the physiologic mechanisms driving the return of ovulatory function during the postpartum period. Recently, Shelley and her colleagues Mark McGuire and Janet Williams (both at the University of Idaho) have become intrigued by the presence and variability of bacteria in human milk (known as the human milk microbiome). As an extension, they are also interested in how the milk microbiome impacts short- and long-term infant health both in the U.S. and globally. Shelley’s research has been funded by a variety of groups including the U.S. Department of Agriculture, National Institutes of Health, National Science Foundation, Bill and Melinda Gates Foundation and commodity groups such as the National Cattlemen’s Beef Association and the Idaho Dairy Commission. McGuire is also passionately committed to bettering human health through the provision of user-friendly, high-quality, evidence-based nutrition information to the press and public.

Shelley is a seasoned science writer, having coauthored two introductory textbooks: one in its third edition (Nutritional Sciences: from Fundamentals to Food, Cengage Published) and the other in its second edition (NUTR, Cengage Publishing).

Shelley lives with her husband (Mark, associate dean of research and director of Idaho Agricultural Experiment Station, University of Idaho) and their Nova Scotia Duck Tolling Retrievers in Moscow, Idaho. When she’s not engaged in teaching, research or service, she enjoys being with her family and friends, traveling, cooking and eating, running, playing the flute, singing and practicing Iyengar yoga.

  • Excellence in Nutrition Education Award, American Society for Nutrition, 2018
  • Thomas E. Lutz Teaching Excellence Award, Washington State University College of Arts and Sciences, 2016
  • National Spokesperson for the American Society for Nutrition, 2008-2017
  • Ehrlich-Koldovsky Award, given by the International Society for Research in Human Milk and Lactation to “recognize a young investigator who has begun to make outstanding, original scientific contributions to the study of human milk and lactation,” 2002
  • Future Leader Award, International Life Sciences Institute, 2000
  • Phi Beta Kappa Honorary (University of Illinois chapter), 1986

COVID-19 & Breast Milk

Studying the safety of breastfeeding in COVID-19 infected mothers.

Participants wanted


University of Idaho

Physical Address:
Mary Hall Niccolls Building, Rm 103
751 Campus Drive

Mailing Address:
875 Perimeter Dr. MS 3183
Moscow, ID 83844-3183

Phone: 208-885-6546

Fax: 208-885-5751




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Phone: 208-334-2999

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Phone: 208-667-2588

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