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.
The Princeton Census Designated Place had a population of 29,613 as of July 1, 2017. Princeton ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Florida. See peer rankings below. The primary coordinate point for Princeton is located at latitude 25.5406 and longitude -80.3984 in Miami-Dade County.