Janet Wojcicki, PhD, MPH

Adjunct Professor
Pediatrics

Dr. Wojcicki is an anthropologist and epidemiologist with an interest in early life risk factors for the development of obesity in high-risk populations. Specifically, she is interested in maternal exposures in pregnancy and early-life feeding decisions that can increase risk for obesity by age five. Additionally, she has international expertise, particularly in sub-Saharan African populations, in evaluating the relationship between nutritional factors and HIV and HHV-8 infection and progression.

Dr. Wojcicki’s research currently focuses on the evaluation of early life risk factors for obesity. She recruited a mother-child Latino cohort with support from the NIH and CDHNF to evaluate the relationship between exposure to maternal prenatal and postnatal depression and risk for obesity at age 2, 5 and 7. In addition to obesity, Dr. Wojcicki is also interested in how pediatric undernutrition can contribute to HIV progression and infection with HHV-8. She is a collaborator on a long-term cohort study in Lusaka, Zambia.

Publications: 

Validation of Variables for Use in Pediatric Obesity Risk Score Development in Demographically and Racially Diverse US Cohorts.

The Journal of pediatrics

Funatake CJ, Armendáriz M, Rauch S, Eskenazi B, Nomura Y, Hivert MF, Rifas-Shiman S, Oken E, Shiboski SC, Wojcicki JM

Food insecurity is a risk factor for metabolic dysfunction-associated steatotic liver disease in Latinx children.

Pediatric obesity

Maxwell SL, Price JC, Perito ER, Rosenthal P, Wojcicki JM

Sub-optimal maternal gestational gain is associated with shorter leukocyte telomere length at birth in a predominantly Latinx cohort of newborns.

Maternal health, neonatology and perinatology

Prasad A, Lin J, Jelliffe-Pawlowski L, Coleman-Phox K, Rand L, Wojcicki JM

Changes in leukocyte telomere length among children with obesity participating in a behavioural weight control program.

Pediatric obesity

Rehkopf DH, Wojcicki JM, Haydel KF, Lin J, Smith DL, Kapphahn KI, Robinson TN

Shorter leukocyte telomere length protects against NAFLD progression in children.

Scientific reports

Wojcicki JM, Gill RM, Wilson L, Lin J, Rosenthal P

Correction: Maternal genitourinary infections and poor nutritional status increase risk of preterm birth in Gasabo District, Rwanda: a prospective, longitudinal, cohort study.

BMC pregnancy and childbirth

Nsereko E, Uwase A, Mukabutera A, Muvunyi CM, Rulisa S, Ntirushwa D, Moreland P, Corwin EJ, Santos N, Nzayirambaho M, Wojcicki JM

A Brief Motivational Intervention Differentially Reduces Sugar-sweetened Beverage (SSB) Consumption.

Annals of behavioral medicine : a publication of the Society of Behavioral Medicine

Population-based identification and temporal trend of children with primary nephrotic syndrome: The Kaiser Permanente nephrotic syndrome study.

PloS one

Parikh RV, Tan TC, Fan D, Law D, Salyer AS, Yankulin L, Wojcicki JM, Zheng S, Ordonez JD, Chertow GM, Khoshniat-Rad F, Yang J, Go AS

High food insecurity in Latinx families and associated COVID-19 infection in the Greater Bay Area, California.

BMC nutrition

Escobar M, Mendez AD, Encinas MR, Villagomez S, Wojcicki JM

Limited consumption of 100% fruit juices and sugar sweetened beverages in Japanese toddler and preschool children.

Preventive medicine reports

Wojcicki JM, Tsuchiya KJ, Murakami K, Ishikuro M, Obaru T, Morisaki N

Longer Leukocyte Telomere Length Predicts Stronger Response to a Workplace Sugar-Sweetened Beverage Sales Ban: An Exploratory Study.

Current developments in nutrition

Wojcicki JM, Lustig RH, Jacobs LM, Mason AE, Hartman A, Leung C, Stanhope K, Lin J, Schmidt LA, Epel ES

Association between micronutrients and maternal leukocyte telomere length in early pregnancy in Rwanda.

BMC pregnancy and childbirth

Nsereko E, Uwase A, Muvunyi CM, Rulisa S, Ntirushwa D, Moreland P, Corwin EJ, Santos N, Lin J, Chen JL, Nzayirambaho M, Wojcicki JM

Maternal genitourinary infections and poor nutritional status increase risk of preterm birth in Gasabo District, Rwanda: a prospective, longitudinal, cohort study.

BMC pregnancy and childbirth

Nsereko E, Uwase A, Mukabutera A, Muvunyi CM, Rulisa S, Ntirushwa D, Moreland P, Corwin EJ, Santos N, Nzayirambaho M, Wojcicki JM

Association of a Workplace Sales Ban on Sugar-Sweetened Beverages With Employee Consumption of Sugar-Sweetened Beverages and Health.

JAMA internal medicine

Epel ES, Hartman A, Jacobs LM, Leung C, Cohn MA, Jensen L, Ishkanian L, Wojcicki J, Mason AE, Lustig RH, Stanhope KL, Schmidt LA

Alterations in the Gut Microbiome at 6 Months of Age in Obese Latino Infants.

Journal of the American College of Nutrition

Ville A, Levine E, Zhi D, Lararia B, Wojcicki JM

Higher Birthweight and Maternal Pre-pregnancy BMI Persist with Obesity Association at Age 9 in High Risk Latino Children.

Journal of immigrant and minority health

Kjaer TW, Faurholt-Jepsen D, Medrano R, Elwan D, Mehta K, Christensen VB, Wojcicki JM

Early life obesity increases the risk for asthma in San Francisco born Latina girls.

Allergy and asthma proceedings

McCallister M, Medrano R, Wojcicki J

Maternal Obesity and Risk of Preterm Birth and Low Birthweight in Hawaii PRAMS, 2000-2011.

Maternal and child health journal

Ju AC, Heyman MB, Garber AK, Wojcicki JM

Chronic Obesity and Incident Hypertension in Latina Women Are Associated with Accelerated Telomere Length Loss over a 1-Year Period.

Metabolic syndrome and related disorders

Wojcicki JM, Elwan D, Lin J, Blackburn E, Epel E

Cord blood klotho levels are inversely associated with leptin in healthy Latino neonates at risk for obesity.

Journal of pediatric endocrinology & metabolism : JPEM

Wojcicki JM, Prather AA, Epel E, Wang D, Dubal DB

Food insecurity is associated with maternal depression and child pervasive developmental symptoms in low-income Latino households.

Journal of hunger & environmental nutrition

Nagata JM, Gomberg S, Hagan MJ, Heyman MB, Wojcicki JM

Bisphenol a increases risk for presumed non-alcoholic fatty liver disease in Hispanic adolescents in NHANES 2003-2010.

Environmental health : a global access science source

Verstraete SG, Wojcicki JM, Perito ER, Rosenthal P

Shorter preschool, leukocyte telomere length is associated with obesity at age 9 in Latino children.

Clinical obesity

Kjaer TW, Faurholt-Jepsen D, Mehta KM, Christensen VB, Epel E, Lin J, Blackburn E, Wojcicki JM

Association of Household Food- and Drink-Sharing Practices With Human Herpesvirus 8 Seroconversion in a Cohort of Zambian Children.

The Journal of infectious diseases

Crabtree KL, Wojcicki JM, Minhas V, Kankasa C, Mitchell C, Wood C

Full fat milk consumption protects against severe childhood obesity in Latinos.

Preventive medicine reports

Beck AL, Heyman M, Chao C, Wojcicki J

The association between cytomegalovirus infection, obesity, and metabolic syndrome in U.S. adult females.

Obesity (Silver Spring, Md.)

Fleck-Derderian S, McClellan W, Wojcicki JM

Antiretroviral Therapy for Perinatal HIV Prevention.

The New England journal of medicine

Wojcicki JM

Early Antibiotic Exposure and Risk of Childhood Obesity in Latinos.

Childhood obesity (Print)

Ville AP, Heyman MB, Medrano R, Wojcicki JM

Store owners as potential agents of change: energy drinks in the interior of Alaska.

International journal of circumpolar health

Wojcicki JM, de Schweinitz P

Leukocyte Telomere Length in Relation to 17 Biomarkers of Cardiovascular Disease Risk: A Cross-Sectional Study of US Adults.

PLoS medicine

Rehkopf DH, Needham BL, Lin J, Blackburn EH, Zota AR, Wojcicki JM, Epel ES

Early exclusive breastfeeding is associated with longer telomeres in Latino preschool children.

The American journal of clinical nutrition

Wojcicki JM, Heyman MB, Elwan D, Lin J, Blackburn E, Epel E

Telomere length change plateaus at 4 years of age in Latino children: associations with baseline length and maternal change.

Molecular genetics and genomics : MGG

Wojcicki JM, Shiboski S, Heyman MB, Elwan D, Lin J, Blackburn E, Epel E

A Risk Score for Childhood Obesity in an Urban Latino Cohort.

The Journal of pediatrics

Robson JO, Verstraete SG, Shiboski S, Heyman MB, Wojcicki JM

Beverage consumption in an Alaska Native village: a mixed-methods study of behaviour, attitudes and access.

International journal of circumpolar health

Elwan D, de Schweinitz P, Wojcicki JM

Cord blood telomere length in Latino infants: relation with maternal education and infant sex.

Journal of perinatology : official journal of the California Perinatal Association

Wojcicki JM, Olveda R, Heyman MB, Elwan D, Lin J, Blackburn E, Epel E

Effects of Antiretroviral Therapy on Kaposi's Sarcoma-Associated Herpesvirus (KSHV) Transmission Among HIV-Infected Zambian Children.

Journal of the National Cancer Institute

Olp LN, Minhas V, Gondwe C, Kankasa C, Wojcicki J, Mitchell C, West JT, Wood C

Preventing mother-to-child transmission of the human immunodeficiency virus in Southern Africa.

Acta paediatrica (Oslo, Norway : 1992)

Wojcicki JM, Nxumalo NC, Masuku S

Telomere length is associated with oppositional defiant behavior and maternal clinical depression in Latino preschool children.

Translational psychiatry

Wojcicki JM, Heyman MB, Elwan D, Shiboski S, Lin J, Blackburn E, Epel E

No Association between Obesity and Behavior in Low-income, Preschool Latino Children.

Journal of health care for the poor and underserved

Nagata JM, Hagan MJ, Heyman MB, Wojcicki JM

The changing role of the primary school teacher in Swaziland in the context of HIV/AIDS: teacher as caretaker and economic provider.

Malawi medical journal : the journal of Medical Association of Malawi

Nxumalo NC, Wojcicki JM, Magowe MK

Breastfeeding offers protection against obesity in children of recently immigrated Latina women.

Journal of community health

Verstraete SG, Heyman MB, Wojcicki JM

Risk factors for early childhood infection of human herpesvirus-8 in Zambian children: the role of early childhood feeding practices.

Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology

Crabtree KL, Wojcicki JM, Minhas V, Smith DR, Kankasa C, Mitchell CD, Wood C

The use of the RESPeRATE device to lower blood pressure in inner city obese adolescents and children: a pilot feasibility study.

High blood pressure & cardiovascular prevention : the official journal of the Italian Society of Hypertension

Wojcicki JM, Geissler JD, Stokes CW, Heyman MB, Tran CT

Quality of life in patients postcolectomy for pediatric-onset ulcerative colitis.

Journal of pediatric gastroenterology and nutrition

Dalal DH, Patton D, Wojcicki JM, Clark AL, Garnett EA, Heyman MB

Acculturation, dietary practices and risk for childhood obesity in an ethnically heterogeneous population of Latino school children in the San Francisco bay area.

Journal of immigrant and minority health

Wojcicki JM, Schwartz N, Jiménez-Cruz A, Bacardi-Gascon M, Heyman MB

Bimodal distribution of risk for childhood obesity in urban Baja California, Mexico.

Journal of urban health : bulletin of the New York Academy of Medicine

Wojcicki JM, Jimenez-Cruz A, Bacardi-Gascon M, Schwartz N, Heyman MB

Reducing childhood obesity by eliminating 100% fruit juice.

American journal of public health

Wojcicki JM, Heyman MB

High-dose infliximab for treatment of pediatric ulcerative colitis: a survey of clinical practice.

World journal of gastroenterology

Nattiv R, Wojcicki JM, Garnett EA, Gupta N, Heyman MB

Peptide YY in children: a review.

Journal of pediatric endocrinology & metabolism : JPEM

Wojcicki JM

Gastroesophageal reflux is not associated with dental erosion in children.

Gastroenterology

Wild YK, Heyman MB, Vittinghoff E, Dalal DH, Wojcicki JM, Clark AL, Rechmann B, Rechmann P

Infant formula, tea, and water supplementation of latino infants at 4-6 weeks postpartum.

Journal of human lactation : official journal of International Lactation Consultant Association

Wojcicki JM, Holbrook K, Lustig RH, Caughey AB, Muñoz RF, Heyman MB

The Zambia Children's KS-HHV8 Study: rationale, study design, and study methods.

American journal of epidemiology

Minhas V, Crabtree KL, Chao A, Wojcicki JM, Sifuniso AM, Nkonde C, Kankasa C, Mitchell CD, Wood C

Chronic maternal depression is associated with reduced weight gain in latino infants from birth to 2 years of age.

PloS one

Wojcicki JM, Holbrook K, Lustig RH, Epel E, Caughey AB, Muñoz RF, Shiboski SC, Heyman MB

Maternal BMI and migration status as predictors of childhood obesity in Mexico.

Nutricion Hospitalaria

Jiménez-Cruz A, Wojcicki JM, Bacardí-Gascón M, Castellón-Zaragoza A, García-Gallardo JL, Schwartz N, Heyman MB

Maternal omega-3 fatty acid supplementation and risk for perinatal maternal depression.

The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians

Wojcicki JM, Heyman MB

Postoperative outcome of colectomy for pediatric patients with ulcerative colitis.

Journal of pediatric gastroenterology and nutrition

Patton D, Gupta N, Wojcicki JM, Garnett EA, Nobuhara K, Heyman MB

Let's Move--childhood obesity prevention from pregnancy and infancy onward.

The New England journal of medicine

Wojcicki JM, Heyman MB

Impact of gluten-free camp on quality of life of children and adolescents with celiac disease.

Pediatrics

Bongiovanni TR, Clark AL, Garnett EA, Wojcicki JM, Heyman MB

Early exclusive breastfeeding and maternal attitudes towards infant feeding in a population of new mothers in San Francisco, California.

Breastfeeding medicine : the official journal of the Academy of Breastfeeding Medicine

Wojcicki JM, Gugig R, Tran C, Kathiravan S, Holbrook K, Heyman MB

Mortality among HIV-1- and human herpesvirus type 8-affected mother-infant pairs in Zambia.

Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology

Wojcicki J, Mwanahamuntu M, Minhas V, Djokic B, Kankasa C, Klaskala W, Brayfield B, Phiri S, Wood C, Mitchell CD

Risk factors for macrosomia in infants born to Latina women.

Journal of perinatology : official journal of the California Perinatal Association

Wojcicki JM, Hessol NA, Heyman MB, Fuentes-Afflick E

Growth hormone treatment for growth failure in pediatric patients with Crohn's disease.

The Journal of pediatrics

Heyman MB, Garnett EA, Wojcicki J, Gupta N, Davis C, Cohen SA, Gold BD, Kirschner BS, Baldassano RN, Ferry GD, Winter HS, Kaplan S

Body mass index and elbow range of motion in a healthy pediatric population: a possible mechanism of overweight in children.

Journal of pediatric gastroenterology and nutrition

Golden DW, Wojcicki JM, Jhee JT, Gilpin SL, Sawyer JR, Heyman MB

Traditional practices and exposure to bodily fluids in Lusaka, Zambia.

Tropical medicine & international health : TM & IH

Wojcicki JM, Kankasa C, Mitchell C, Wood C

Low socioeconomic status and risk for infection with human herpesvirus 8 among HIV-1 negative, South African black cancer patients.

Epidemiology and infection

Wojcicki JM, Newton R, Urban M, Stein L, Hale M, Patel M, Ruff P, Sur R, Bourboulia D, Sitas F

Risk factors for high anti-HHV-8 antibody titers (> or =1:51,200) in black, HIV-1 negative South African cancer patients: a case control study.

BMC infectious diseases

Wojcicki JM, Newton R, Urban MI, Stein L, Hale M, Patel M, Ruff P, Sur R, Bourboulia D, Sitas F