Not having enough iodine in the diet is a rare cause of hypothyroidism in the U.S. Other causes of primary hypothyroidism include: 1  Certain drugs such as lithium. 2  Radiation exposure to the neck. 3  Radioactive iodine used for treatment of hyperthyroidism (overactive thyroid). 4  Special x-ray dyes.
Princeton, TX. Princeton is located in northeast Texas. Princeton is part of Collin County. Princeton has 7.40 square miles of land area and 0.06 square miles of water area. As of 2010-2014, the total Princeton population is 7,520, which has grown 116.28% since 2000.
Gibson County, Indiana. For the county in Tennessee, see Gibson County, Tennessee. Gibson County is a county located in the southwestern part of the U.S. state of Indiana. As of 2010, the population was 33,503. The county seat is Princeton. Gibson County is included in the Evansville, IndianaâKentucky Metropolitan Statistical Area.