Hormonal
Biomarker

TSH

Included in Essential Labs
Why we test it
Thyroid-stimulating hormone (TSH) controls how much T3, T4, and calcitonin your thyroid produces. Imbalances show up as brain fog, mood changes, and fatigue, and chronic dysfunction is associated with increased dementia risk.
BetterBrain target
0.5-2.5 mIU/L (optimal 1.0-2.0)
Standard range is 0.4-4.0 mIU/L. Our tighter target reflects research linking thyroid function to brain metabolism and cognition.
What you Can do
  1. Selenium supplementation
  2. Iodine-rich foods
  3. Stress management
  4. Quality sleep
  5. Thyroid-supportive nutrition

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