Professor of Pediatrics
Greehey Foundation Endowed Chair, Pediatric Endocrinology
Interim Division Chief
Fellowship Director of Pediatric Endocrinology
Division of Endocrinology & Diabetes

M.D. Wright State University School of Medicine, Dayton, OH 1984
BS Microbiology, Indiana University, Bloomington, Indiana, 1980

Fellowship, pediatric endocrine/child psychology, Massachusetts General Hospital, 1989-90

Fellowship, genetics, endocrinology and metabolism, Children’s Hospital of Oklahoma, 1987-89

Residency, pediatrics, Southwest Children’s Medical Center, Dallas, 1985-87

Internship, pediatrics, St. Louis Children’s Hospital, 1984-85

Board Certification:
Pediatrics, 1988-current; Pediatric Endocrinology, 1991-current

Recent Publications:
Genetics of serum carotenoid concentrations and their correlation with obesity-related traits in Mexican American children..Am J Clin Nutr. 2017 Jul;106(1):52-58.

Predictors of Loss to Follow-Up among Children with Type 2 Diabetes. Pediatric Diabetes Consortium. Horm Res Paediatr. 2017;87(6):377-384.

Weight change in the management of youth-onset type 2 diabetes: the TODAY clinical trial experience. Pediatr Obes. 2017 Aug;12(4):337-345.

Adherence to a lifestyle program for youth with type 2 diabetes and its association with treatment outcome in the TODAY clinical trial..Pediatr Diabetes. 2017 Jun 30.

Simultaneous blood glucose monitoring during gastric emptying scintigraphy may identify unsuspected abnormalities. McWhorter NE, Abazid L, Gorzell BC, Lynch JL, Salman UA, Metter DF, Phillips WT. Clinical Nuclear Medicine 2018 June: 43(6):411-419.

Genetic and environmental (physical fitness and sedentary activity) interaction effects on cardiometabolic risk factors in Mexican American children and adolescents. Genetic Epidemiol Feb 2018.

Insulin sensitivity and diabetic kidney disease in children and adolescents with Type 2 diabetes: An observational analysis of data from the TODAY Clinical Trial. Bjornstad P, Hehus E, El Ghormli, Bacha F, Libman IM, McKay S, Willi SM, Laffel L, Arslanian S, Nadeau KJ, Lynch JL, Hale DE for TODAY Study Group. Am J Kidney Dis 2018 Jan; 71(1):65-74.

Initial presentation of Type 2 diabetes in adolescents predicts durability of successful treatment with Metformin monotherapy: Insights from the Pediatric Diabetes Consortium T2D Registry. Bacha F, Cheng P, Gal RL, Kollman C, Tamborlane WV, Klingensmith GJ, Manseau K, Wood J, Beck RW, Lynch JL; for Pediatric Diabetes Consortium Horm Res Paediatr 2018 Jan; 18(1):47-55.

Cardiac biomarkers in youth with Type 2 diabetes mellitus: Results from the TODAY Study. Gidding SS, Bacha F, Bjornstad P, Levitt Katz LE, Levitsky LL, Lynch J, Tryggestad JB, Weinstock RS, El Ghormli L, Lima JAC; TODAY Study Group. 2018 Jan; 192:86-92e5.

Type 2 diabetes in a 5 year old and single center experience of Type 2 diabetes in youth under 10. Hutchins J, Barajas RA, Hale DE, Escaname EN, Lynch JL. Pediatric Diabetes 2017 Nov;18(7):674-677

Impact of Excessive Weight Gain on Cardiovascular Outcomes in Type 1 Diabetes: Results From the Diabetes Control and Complications Trial/Epidemiology of Diabetes Interventions and Complications (DCCT/EDIC) Study. Purnell JQ, Braffett BH, Zinman B, Gubitosi-Klug RA, Sivitz W, Bantle JP, Ziegler G, Cleary PA, Brunzell JD; DCCT/EDIC Research Group. Lynch, J. Diabetes Care 2017 Dec;40(12):1756-1762.

The Metabolic Syndrome in Children and Adolescents: Shifting the Focus to Cardiometabolic Risk Factor Clustering. Magge SN, Goodman E, Armstrong SC; COMMITTEE ON NUTRITION; SECTION ON ENDOCRINOLOGY; SECTION ON OBESITY. Pediatrics 2017 Aug; 140(2):e1-e14.

Recommendations for improving clinical trial design to facilitate the study of youth-onset type 2 diabetes. Jalaludin MY, Barrientos-Pérez M, Hafez M, Lynch J, Shehadeh N, Turan S, Weghuber D. Clin Trials. 2019 Aug 26:1740774519870190. PMID:31450961

Elevated Serum Uric Acid Is Associated With Greater Risk for Hypertension and Diabetic Kidney Diseases in Obese Adolescents With Type 2 Diabetes: An Observational Analysis From the Treatment Options for Type 2 Diabetes in Adolescents and Youth (TODAY) Study. Bjornstad P, Laffel L, Lynch J, El Ghormli L, Weinstock RS, Tollefsen SE, Nadeau KJ; TODAY Study Group. Diabetes Care. 2019 Jun;42(6):1120-1128. doi: 10.2337/dc18-2147. PMID:30967435

Liraglutide in Children and Adolescents with Type 2 Diabetes.Tamborlane WV, Barrientos-Pérez M, Fainberg U, Frimer-Larsen H, Hafez M, Hale PM, Jalaludin MY, Kovarenko M, Libman I, Lynch JL, Rao P, Shehadeh N, Turan S, Weghuber D, Barrett T; Ellipse Trial Investigators.N Engl J Med. 2019 Aug 15;381(7):637-646. doi: 10.1056/NEJMoa1903822. PMID:31034184

Hyperglycemia During Childhood Cancer Therapy: Incidence, Implications, and Impact on Outcomes. Grimes A, Mohamed A, Sopfe J, Hill R, Lynch J. J Natl Cancer Inst Monogr. 2019 Sep 1;2019(54):132-138. PMID:31532529

Activities and Awards:                                                                                                                                                               Chair, The American Academy of Pediatrics Executive Section for Endocrinology

Global Pediatric Type 2  Diabetes Expert Panel

Bexar County Medical Society Extraordinary Women in Medicine Leadership Award, 2018

San Antonio Best Doctors and Best Doctors in America (Peer Selected), 2009-2020

Castle Connolly’s Exceptional Women in Medicine, 2018-2020

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