Health Central - Thyroid Disorders
Illustrations, definitions, causes, risk factors, symptoms, tests, and treatment.

iThyroid.com
A patient led site that focuses on nutrition for optimal thyroid health.

MedicineNet - Thyroid Overview
Find a number of articles on gland conditions and diseases. Including medications, doctor's views, and responses.

MyThyroid.com
Patient-centered resource by a physician from Toronto. Discusses the various diseases and their related complications.

The Hormone Foundation: Thyroid Information
Contains an overview on hyperthyroidism, hypothyroidism, thyroid nodules, lifestyle issues, and prevention.

The Merck Manual - Thyroid Disorders
Covers the synthesis and release of hormones, the effects, and laboratory testing of thyroid function.

The Thyroid Blog
Dr Richard Guttler provides a daily diary based on his web consultations and rounds at the Santa Monica Thyroid Diagnostic Center. Features text and audio posts.

Thyroid and Parathyroid Glands
Presents the chemistry, synthesis, and secretion of thyroid hormones. Covers hamburger thyrotoxicosis, pregnancy, fetal development, and sodium-iodide.

Thyroid Disease
Pathology lecture notes and pictures of goiter, including cancer.

Thyroid Disease Manager
Features a complete analysis of thyrotoxicosis, hypothyroidism, thyroiditis, nodules, cancer, and aspects of physiology.

Thyroid History
Contains articles of historical research and present studies. Includes diagnosis, treatment, and related diseases.

Thyroid Support Center
Presents physician articles, medical studies, symptoms, dangers, and treatment of gland disorders. Includes a chat forum and blog.

Thyrolink
International based site from Merck KGaA for specialists and patients. Features slide shows and general information to the public. Available in various languages.