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Leslie DeGroot, MD - Endotext Founder 1928-2018 is a non-profit web-based source of trustworthy information on endocrine disease written for physicians around the world. It is a comprehensive, authoritative, regularly up-dated, un-biased, and free, on-line textbook directed to physicians, trainees, students, and other health professionals. Our chapters cover the broad area of Clinical Endocrinology, emphasizing clinical endocrine practice, including the most current information on the manifestations of endocrine diseases, diagnoses, and treatments. is the premier provider of peer-reviewed endocrine information on the Web, and we invite your critical comparison to any Endocrinology source available anywhere in the world. 


ENDOTEXT is republished by NIH/NLM/NCBI Books, and all chapters are indexed on PUBMED. It is organized by the Editor Kenneth Feingold, MD, 28 Section Editors, and over 400 Authors. All html material may be freely downloaded for personal use and teaching. A PDF version of each chapter can also be downloaded for a small one-time fee ($5) or for an unlimited times (for any chapter) over a year ($20). There are more than 70,000 registered users.

Endotext is owned by MDText, a non-profit organization registered in Oregon (USA), and contributions are Federal Tax-exempt as a public charity under IRC Section 509(a)(2). is solely responsible for all content.  James DelGrande is our Web Administrator. Our site is made available largely through the generosity of the authors and editors who have provided their work as a service to the profession. 



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