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.
More... Bike Rodeo. Learn the basics of bike safety and handling on our exciting road courses! Hamilton Pool Preserve. Enjoy one of the top places to swim in Central Texas. Reservations. Reserve a field and get your kickball on. Lake Levels around Travis County. View up to date data on lake levels. Volunteer. Cleanup your neighborhood park or ...