Physician Photo

Lee Michael Kaplan, MD, PhD

Director, MGH Weight Center

  • Phone: 617-724-6007
Department of Medicine


  • Digestive Healthcare Center
  • Weight Center
  • Colorectal Center
Clinical Interests
Liver disease
Obesity medicine
GI endocrine tumors
Boston: Massachusetts General Hospital
Medical Education
MD, Yeshiva University
PhD, Yeshiva University
Residency, Massachusetts General Hospital
Fellowship, Massachusetts General Hospital
Board Certifications
Gastroenterology, American Board of Internal Medicine
Internal Medicine, American Board of Internal Medicine
Patient Age Group
Accepting New Patients
Accepting New Patients: Call for Availability

Weight Center restructures

ACCORDING TO RECENT DATA from the National Health and Nutrition Examination Survey, approximately one-third of U.S. adults and 17 percent of children and adolescents aged 2 to 19 years are obese.

Changes in gastrointestinal microbes may produce some benefits of gastric bypass

Changes in the microbial population of the gastrointestinal tract may underlie some of the benefits of gastric bypass surgery, reports a team of researchers from MGH and Harvard University. The investigators also found that post-bypass alterations in the microbial population of mice can induce weight loss in animals that did not have surgery.

Gene variant appears to predict weight loss after gastric bypass

MGH researchers have identified a gene variant that helps predict how much weight an individual will lose after gastric bypass surgery, a finding with the potential both to guide treatment planning and to facilitate the development of new therapeutic approaches to treating obesity and related conditions like diabetes.

Mass. General study suggests that medication could improve gastric bypass results

New findings about the mechanisms involved – or not involved – in the effects of the most common form of bariatric surgery suggest that combining surgery with a specific type of medication could augment the benefits of the procedure.

Gastroenterology Associates
55 Fruit Street
Boston, MA 02114-2696

Phone: 617-724-6007
Fax: 617-724-6832

Weight Center, MGH
50 Staniford Street
Boston, MA 02114-2517

Phone: 617-726-4400
Fax: 617-724-6565