Following is a list of potential risk factors that may lead to<unk> : # Low dietary<unk>  # Selenium deficiency # Pregnancy # Exposure to radiation # Increased intake/plasma levels of goitrogens, such as calcium # Sex (higher occurrence in women) # Smoking tobacco # Alcohol (reduced prevalence in users) # Oral contraceptives (reduced prevalence in users) # Perchlorates # Thiocyanates # Age (for different types of<unk>  at different ages)
Iodine deficiency
Growth hormone deficiency
Thyroid dyshormonogenesis
Isolated growth hormone deficiency
Congenital hypothyroidism
Constitutional growth delay
Adrenocorticotropic hormone deficiency
Congenital iodine deficiency syndrome