Elizabeth Hait, MD, MPH

Elizabeth Hait, MD, MPH

Attending physician; Co-Medical Director, Eosinophilic Gastrointestinal Disease (EGID) Program

Assistant Professor of Pediatrics, Harvard Medical School

    Contact: 617-355-6058
  • Fax: 617-730-0495

Medical Services


  • Allergic Gastrointestinal Disorders
  • Gastroenterology


  • Gastroenterology, Hepatology and Nutrition


  • English


  • Eosinophilic Gastrointestinal Disease Program
To schedule an appointment: Call 617-355-6058 or Request an Appointment
Elizabeth Hait, MD, MPH

Philosophy of Care 

I believe that parents know their children best. I know that really listening to the parents of my patients is the most effective tool that I have as a doctor to determine the root cause of their children's issue.

Experience and Education


Medical School

University of Toronto, 1999

Toronto, Canada


Rainbow Babies and Children's Hospital, Case Western Reserve University, 1999-2000

Cleveland , OH


Rainbow Babies and Children's Hospital, Case Western Reserve University, 2000-2002

Cleveland, OH


Boston Children's Hospital, Harvard Medical School, 2002-2006

Boston, MA


Professional History

Dr. Elizabeth Hait has been a staff gastroenterologist at Boston Children’s Hospital for over a decade. While she maintains a thriving general pediatric GI practice, Dr. Hait has a particular interest in the relationship between the immune system of the GI tract and the environment.

As a fellow, she studied the gut microbiota and inflammatory mechanisms of recurrent inflammatory bowel disease (IBD) post colectomy. Dr. Hait also studied with Dr. Russ Hauser, Professor of Occupational and Environmental Health at the Harvard School of Public Health, and brought her pediatric GI perspective to his work on endocrine disruptors. Phthalates are widely used chemicals that adversely affect male fertility in animal models. They are an inactive ingredient in Asacol®, a medication commonly used to treat children with IBD. Together, Dr. Hait and Dr. Russ designed a unique study to examine the effects of Asacol® on male reproductivity.  The clear impact of their work, and one of Dr. Hait’s proudest achievements, is that their study led to Warner Chilcott Pharmaceuticals replacing Asacol® with phthalate-free Delzicol®.

After fellowship, Dr. Hait was recruited to become a faculty member at Boston Children’s Hospital and helped build a multidisciplinary program to treat children with allergic gastrointestinal disorders. Boston Children’s Hospital’s Eosinophilic Gastrointestinal Disease (EGID) Program was the first program of its kind in the Northeast. Our team has published several articles on novel therapeutic approaches to treat allergic gastrointestinal disorders.


Publications powered by Harvard Catalyst Profiles
  1. Nassan FL, Coull BA, Skakkebaek NE, Andersson AM, Williams MA, Mínguez-Alarcón L, Krawetz SA, Hall JE, Hait EJ, Korzenik JR, Ford JB, Moss AC, Hauser R. A crossover-crossback prospective study of dibutyl-phthalate exposure from mesalamine medications and serum reproductive hormones in men. Environ Res. 2018 Jan; 160:121-131.
  2. Stamm DA, Hait E, Litman HJ, Mitchell PD, Duggan C. High Prevalence of Eosinophilic Gastrointestinal Disease in Children With Intestinal Failure. J Pediatr Gastroenterol Nutr. 2016 09; 63(3):336-9.
  3. Nassan FL, Coull BA, Skakkebaek NE, Williams MA, Dadd R, Mínguez-Alarcón L, Krawetz SA, Hait EJ, Korzenik JR, Moss AC, Ford JB, Hauser R. A crossover-crossback prospective study of dibutyl-phthalate exposure from mesalamine medications and semen quality in men with inflammatory bowel disease. Environ Int. 2016 Oct; 95:120-30.
  4. Hait EJ, Calafat AM, Hauser R. Urinary phthalate metabolite concentrations among men with inflammatory bowel disease on mesalamine therapy. Endocr Disruptors (Austin). 2014 Oct 20; 1(1).
  5. Rubinstein E, Lee JJ, Fried A, Logvinenko T, Ngo P, McDonald D, Hait EJ. Comparison of 2 delivery vehicles for viscous budesonide to treat eosinophilic esophagitis in children. J Pediatr Gastroenterol Nutr. 2014 Sep; 59(3):317-20.
  6. Lee JJ, Fried AJ, Hait E, Yen EH, Perkins JM, Rubinstein E. Topical inhaled ciclesonide for treatment of eosinophilic esophagitis. J Allergy Clin Immunol. 2012 Oct; 130(4):1011; author reply 1011-2.
  7. Zella GC, Hait EJ, Glavan T, Gevers D, Ward DV, Kitts CL, Korzenik JR. Distinct microbiome in pouchitis compared to healthy pouches in ulcerative colitis and familial adenomatous polyposis. Inflamm Bowel Dis. 2011 May; 17(5):1092-100.
  8. Fishman LN, Barendse RM, Hait E, Burdick C, Arnold J. Self-management of older adolescents with inflammatory bowel disease: a pilot study of behavior and knowledge as prelude to transition. Clin Pediatr (Phila). 2010 Dec; 49(12):1129-33.
  9. Hait EJ, Fishman LN, Katzka DA. Clinical scenario--an 18-year-old with acute dysphagia and meat impaction. Clin Gastroenterol Hepatol. 2009 Jul; 7(7):721-4.
  10. Hait EJ, Barendse RM, Arnold JH, Valim C, Sands BE, Korzenik JR, Fishman LN. Transition of adolescents with inflammatory bowel disease from pediatric to adult care: a survey of adult gastroenterologists. J Pediatr Gastroenterol Nutr. 2009 Jan; 48(1):61-5.
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  12. Dehlink E, Yen E, Leichtner AM, Hait EJ, Fiebiger E. First evidence of a possible association between gastric acid suppression during pregnancy and childhood asthma: a population-based register study. Clin Exp Allergy. 2009 Feb; 39(2):246-53.
  13. Najarian RM, Hait EJ, Leichtner AM, Glickman JN, Antonioli DA, Goldsmith JD. Clinical significance of colonic intraepithelial lymphocytosis in a pediatric population. Mod Pathol. 2009 Jan; 22(1):13-20.
  14. Hait E. Baby steps: determining the relationship between Crohn's activity and birth outcomes. Inflamm Bowel Dis. 2007 Dec; 13(12):1578.
  15. Hait EJ, Bousvaros A, Schuman M, Shamberger RC, Lillehei CW. Pouch outcomes among children with ulcerative colitis treated with calcineurin inhibitors before ileal pouch anal anastomosis surgery. J Pediatr Surg. 2007 Jan; 42(1):31-4; discussion 34-5.
  16. Hait E, Rufo PA. Why good pouches go bad. Inflamm Bowel Dis. 2007 Jan; 13(1):116-7.
  17. Hait E, Liang M, Degar B, Glickman J, Fox VL. Gastrointestinal tract involvement in Langerhans cell histiocytosis: case report and literature review. Pediatrics. 2006 Nov; 118(5):e1593-9.
  18. Frye RE, Hait EJ. Air swallowing caused recurrent ileus in Tourette's syndrome. Pediatrics. 2006 Jun; 117(6):e1249-52.
  19. Hait E, Arnold JH, Fishman LN. Educate, communicate, anticipate-practical recommendations for transitioning adolescents with IBD to adult health care. Inflamm Bowel Dis. 2006 Jan; 12(1):70-3.
  20. Hait E, Hait L, Bousvaros A, Grand R. Pediatric inflammatory bowel disease: what children can teach adults. Inflamm Bowel Dis. 2005 Jun; 11(6):519-27.
To schedule an appointment: Call 617-355-6058 or Request an Appointment


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