Dr. Karl Nadolsky, DO, is a clinical endocrinologist and director of the Diabetes & Endocrinology Clinic at the Gym in Holland, MI. He is an assistant clinical professor of medicine for Michigan State University College of Human Medicine. Holds board certification in Internal Medicine, Diabetes Endocrinology & Metabolism, and Obesity Medicine.
Dr. Nadolsky graduated from Michigan State University in 2003 with a degree in kinesiology, earning academic all-American, four time academic all-Big Ten scholar athlete and four-time NCAA qualifier honors for the varsity wrestling team. He stayed at MSU for 1 year serving as the strength and nutrition coach for the wrestling team.
He graduated from Nova Southeastern College of Osteopathic Medicine in 2008 and completed residency in internal medicine in Portsmouth, Va, graduating in 2011 and earning certification from the American Board of Internal Medicine.
Following residency, Dr. Nadolsky practiced for two years as a general internist obesity specialist at Naval Medical Center, Portsmouth while earning certification from the American Board of Obesity Medicine in 2012
Fellowship training in endocrinology was completed at Walter Reed National Military Medical Center (WRNMMC), Bethesda, MD earning board certification in 2015. Following fellowship, he developed and directed the Diabetes, Obesity & Metabolic Institute, was faculty for the endocrinology fellowship program and assistant professor of medicine for Uniformed Services University
Currently serving as chair for the AACE Comprehensive Obesity Management Algorithm, published in Endocrine Practice, November, 2025.
Co-host of the DocsWhoLift podcast which casually educates the public on obesity, hormones and other topics in health to fight the battle against misinformation.
Memberships: ADA, American Association of Clinical Endocrinologists (AACE), The Obesity Society, National Lipid Association, and The Endocrine Society. Co-author of the AACE 2016 Clinical Practice Guidelines for Comprehensive Medical Care of Patients with Obesity and lead author the 2025 Algorithm update.. On the editorial advisory board for Endocrine News and Medpage Today
