Thyroid & Metabolism
The butterfly gland that controls everything
Your thyroid sets the metabolic rate for every cell. Suboptimal thyroid function causes fatigue, weight gain, brain fog, and depression — yet 60% of cases go undiagnosed.
Hypo vs Hyper thyroid
Compare symptoms of low and high thyroid function.
This step is interactive — open the Thier app to try it.
TSH alone misses subclinical disease
Standard 'TSH only' panels miss the early shift. Optimal TSH is 1.0-2.0 mIU/L; the lab range often goes to 4.5. A TSH of 4.0 with low Free T3 is sub-clinical hypothyroidism — symptomatic but flagged 'normal'. Insist on TSH + Free T3 + Free T4 + reverse T3 + thyroid antibodies (anti-TPO, anti-Tg) for a complete picture.
Foods + nutrients that support the thyroid
Tap each to see why it matters.
This step is interactive — open the Thier app to try it.
Hashimoto's is the autoimmune one
Hashimoto's thyroiditis — the autoimmune attack on thyroid tissue — causes ~90% of hypothyroidism in iodine-replete countries. It's diagnosed by elevated anti-TPO or anti-Tg antibodies, not just TSH. Once positive, the body keeps attacking even after thyroid meds normalise lab values; ongoing inflammation control matters as much as hormone replacement.
Key Takeaway
Get thyroid levels tested (TSH, Free T3, Free T4, antibodies) regularly. Selenium, iodine, zinc, and stress management all support optimal thyroid health.