04/02/2026
Your TSH is normal. Your doctor says you’re fine. But you’re exhausted, anxious, foggy, and struggling.
You are not imagining it. The research has been saying so for over a decade.
In the latest post in our Hashimoto’s Research Library, I review five key studies on euthyroid Hashimoto’s thyroiditis, what it means when your labs are normal but your symptoms are very real, and why antibody levels matter far more than most patients are told.
A few things the research confirms:
TPO antibody levels correlate directly with fatigue, irritability, brain fog, and lower quality of life even when thyroid hormones are completely normal.
Both TPO and TG antibodies are independently associated with systemic inflammation and symptom burden. TgAb specifically is linked to depression, insomnia, and emotional indifference. If you only have TgAb elevation, your antibodies still matter.
Optimized levothyroxine therapy does not reliably resolve these symptoms. Hormone replacement alone is not sufficient care for Hashimoto’s disease.
A genetic variation called the DIO2 polymorphism, present in up to 36% of the population, may explain why many patients feel hypothyroid despite perfect labs. Blood levels look normal. Cells are not getting what they need.
This is why we practice the way we do at Wellness Minneapolis. Hashimoto’s is an autoimmune disease, not simply a hormone deficiency. Your symptoms deserve investigation, not dismissal.
Read the full research review at the link in bio.
Research referenced in this post:
PMID: 21186954
PMID: 24211158
PMID: 21910915
PMID: 39537841
PMID: 40756512