Diabetes, endocrine and metabolism disorders involve several different body systems, including the thyroid, the metabolism, and the reproductive system. An endocrinologist is a physician who deals with endocrine system disorders, involving glands such as the thyroid and adrenal glands. This specialist also helps patients deal with disorders such as diabetes, nutritional disorders, and problems with reproductive health.

Doctor density varies by specialty and location. Illinois has 274 practicing diabetes, endocrinology & metabolism doctors. Broken out by city, diabetes, endocrinology & metabolism doctor density in Arlington Heights is 4, in Aurora is 3, in Barrington is 2, in Belleville is 3, in Belvidere is 1, in Berwyn is 1, in Bloomingdale is 2, in Bloomington is 5, in Blue Island is 2, in Brookfield is 1, in Burbank is 1, in Burr Ridge is 10, in Calumet City is 1, in Carbondale is 2, in Carol Stream is 1, in Centralia is 1, in Champaign is 9, in Chicago is 121, in Chicago Heights is 4, in Crest Hill is 1, in Crestwood is 1, in Crystal Lake is 6, in Danville is 3, in Darien is 1, in Decatur is 2, in Des Plaines is 4, in Edwardsville is 5, in Elgin is 2, in Elk Grove Village is 3, in Elmhurst is 1, in Evanston is 8, in Evergreen Park is 3, in Fairview Heights is 1, in Frankfort is 1, in Freeport is 1, in Geneva is 3, in Glenview is 2, in Grayslake is 1, in Gurnee is 3, in Harvard is 1, in Harvey is 1, in Hazel Crest is 1, in Herrin is 1, in Hickory Hills is 1, in Highland Park is 1, in Hines is 3, in Hinsdale is 5, in Hoffman Estates is 5, in Homewood is 1, in Joliet is 5, in Kankakee is 1, in La Grange is 3, in Lake Forest is 2, in Libertyville is 3, in Lombard is 3, in Mattoon is 2, in Maywood is 11, in Mchenry is 1, in Melrose Park is 2, in Mokena is 1, in Monticello is 2, in Morris is 1, in Naperville is 8, in Niles is 1, in North Chicago is 5, in Northbrook is 2, in Northlake is 1, in Oak Brook is 2, in Oak Lawn is 8, in Oak Park is 8, in Oakbrook Terrace is 2, in Olympia Fields is 4, in Orland Park is 4, in Palatine is 1, in Palos Heights is 1, in Park Ridge is 3, in Peoria is 5, in Quincy is 1, in Rantoul is 1, in River Forest is 1, in Rock Island is 2, in Rockford is 6, in Rosiclare is 1, in Saint Charles is 1, in Salem is 1, in Schaumburg is 2, in Shorewood is 1, in Silvis is 2, in Skokie is 9, in Springfield is 12, in Tinley Park is 5, in Urbana is 7, in Vernon Hills is 2, in Warsaw is 1, in Waukegan is 2, in Wheaton is 2, in Wheeling is 2, in Winnetka is 1, in Woodridge is 1, and in Woodstock is 2.

Most people think that Chicago, because of its size and popularity, is Illinois’ capital city, but that distinction belongs to Springfield, home of the Abraham Lincoln Museum. Illinois has hundreds of museums, numerous yearly art and ethnic festivals, a lakeshore bordering Lake Michigan, and the many national forests and parks that offers visitors camping, horseback riding, biking, kayaking, and fishing. Chicago is home to the Sears Tower, the Shedd Aquarium, the Art Institute of Chicago, the Adler Planetarium, the Museum of Science and Industry, and other cultural opportunities and restaurants in the Navy Pier area.

According to 2005 Census estimates, Illinois has a population of 12,763,371. Of this population, 3,172,677 are under the age of 18 and 1,523,937 are at or above the age of 65.