Teen births Births to mothers aged 15 to 19 years. 142 56.1 55 43.1. Infant mortality rate is an estimate of the number of infant deaths for every 1,000 live births; Teen birth rates are per 1,000 female population ages 15-19 years. Counts are not shown when the number of teen births. is fewer than 5.
International researchers, including a team at McGill University, have discovered a new cause for thyroid hormone deficiency, or hypothyroidism. This common endocrine disorder is typically caused by problems of the thyroid gland, and more rarely, by defects in the brain or the pituitary gland (hypophysis). However, a new cause of the disease has been discovered from an unsuspected source and is reported in the journal Nature Genetics.
1 There are many disorders that result in hypothyroidism, for example, autoimmune disorders, thyroid removal, prescription medications, pituitary disease, and iodine deficiency.  The thyroid gland is regulated by another gland that is located in the brain, the pituitary.