A Functional Approach to Hypothyroidism: Root Causes, Natural Therapies, and Hormone Harmony

What Is Hypothyroidism Functionally? 

Hypothyroidism occurs when your thyroid gland slows down hormone production. But instead of only asking “how low are your thyroid hormones,” a functional approach asks: why is your thyroid underperforming? Often, it’s a whole-body issue involving inflammation, nutritional deficiencies, stress, and hormone imbalance.

Key Root Causes to Explore: 

• Chronic inflammation (often driven by diet, stress, or toxins)

• Autoimmunity (Hashimoto’s) often triggered by gut imbalances or food sensitivities

• Iodine, selenium, zinc, and iron deficiencies

• High cortisol or adrenal fatigue

• Estrogen dominance in women

• Low vitamin D

Common Hypothyroidism Symptoms (in both overt and subclinical hypothyroidism): 

• Fatigue, brain fog, and low mood 

• Constipation and slow digestion 

• Dry skin and hair thinning 

• Weight gain or resistance to weight loss 

• Menstrual irregularities and low libido 

A Functional Approach to Diagnosis: 

In addition to TSH and T4, ask your provider for: 

• Free T3 and Reverse T3

• Thyroid antibodies (TPO, TGAb)

• Ferritin, B12, Vitamin D, magnesium, zinc

• Salivary cortisol (adrenal function)

Natural Support Strategies: 

Reduce Inflammation 

• Eliminate processed foods and sugar 

• Focus on whole foods, omega-3s, herbs like turmeric 

Balance Blood Sugar 

• Eat protein and fiber with every meal 

• Avoid refined carbs 

Rebuild Nutrient Stores 

• Selenium, zinc, iodine (carefully), iron (if low) 

• Vitamin D3 + K2

Support Adrenals and Lower Stress 

• Adaptogens like ashwagandha, holy basil 

• Mindfulness, better sleep, nature time 

Gut and Liver Support 

• Consider probiotics, prebiotics, liver-friendly foods (cruciferous veg)