Hypothyroidism: Root Causes

 Thyroid Causes

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

Thyroid 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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Medications that can cause hypothyroidism

Medications that can cause hypothyroidism:

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