Hypothyroidism: Root Causes

Testing Techniques.

The following tests help assess possible reasons for Thyroid Causes: Thyroid-hormone testing (thyroid: TSH, Free T4, Free 73, Reverse T3, anti-thyroglobulin antibodies, anti-thyroid peroxidase) blood, urine.

General hormone testing (DHEA, cortisol, testosterone, IGF-1, estrogen, progesterone, insulin) saliva, blood, or urine. Intestinal permeability, urine.

Toxic metals (e.g., mercury, lead) hair or urine. Vitamin and mineral analysis (especially vitamin A, selenium, zinc, iodine, copper, magnesium, vitamin D) blood, urine. Amino acid analysis (especially L-tyrosine) blood or urine. Digestive function and microbe/parasite/fungal testing stool analysis. Food and environmental allergies/sensitivities—blood, electrodermal.

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Thyroid Causes

  • Stress
  • Genetics
  • Poor diet
  • Inactivity
  • Pregnancy
  • Head or thyroid injury
  • Pituitary gland imbalance
  • Failure of the pituitary gland
  • Iodine and other nutrient deficiencies
  • Surgery on or radiation of the thyroid
  • Hashimoto’s disease and other inflammatory disorders of the thyroid
  • Hormone imbalance (especially estrogen/progesterone, cortisol/DHEA)
  • Certain medications, most notably lithium, arrhythmia medications, and synthetic estrogen.

See also: “Hypothyroidism Treatment

Medications that can cause Thyroid:

  • Lithium
  • Rifampin
  • Phenytoin
  • Stavudine
  • Amiodarone
  • Bexarotene
  • Ipilimumab
  • Perchlorate
  • Ethionamide
  • Thalidomide
  • Carbamazepine
  • Phenobarbital
  • Sulfisoxazole
  • Interferon alfa
  • Aminoglutethimide
  • Interleukin (IL)-2
  • Sunitinib, imatinib
  • 4-Aminosalicylic acid
  • Oral tyrosine kinase inhibitors.

Medications that can cause hypothyroidism