Hormonal
Biomarker

Free/Total T3

Available as add-on
Why we test it
Triiodothyronine is the most active thyroid hormone and directly affects brain metabolism, mood, and cognitive processing speed. Low T3 levels are associated with cognitive slowing and increased depression risk.
BetterBrain target
Free T3: 3.0-4.0 pg/mL
The most active thyroid hormone. Low levels are associated with cognitive slowing and depression.
What you Can do
  1. Selenium supplementation
  2. Zinc
  3. Iodine-rich foods
  4. Stress management
  5. Iron optimization

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