Thiamine (B1) and Autonomic Stability

POTS is a real diagnosis, but it isn’t always the whole story. In this episode of Bendy Bodies, Dr. Linda Bluestein takes a deep dive into POTS imitators: conditions that can mimic, worsen, or coexist with postural orthostatic tachycardia syndrome and quietly derail treatment progress. Inspired by listener questions and real-world clinical patterns, the episode explores why some people do “everything right” for POTS and still don’t improve.
The conversation breaks down overlooked contributors like nutrient deficiencies (including pernicious anemia and thiamine deficiency), endocrine and hormonal conditions, mast cell activation, medication effects, sleep disorders, post-infectious syndromes, and neurologic or autoimmune drivers. Dr. Bluestein explains how normal labs can be misleading, why symptoms often appear before classic test abnormalities, and how multiple factors can converge on the same autonomic pathway.
Rather than encouraging self-diagnosis, this episode offers a framework for asking better questions, helping listeners recognize red flags, avoid medical ping-pong, and advocate thoughtfully without overwhelming themselves or their clinicians.

For anyone living with POTS symptoms that don’t fully respond to treatment, this episode provides clarity, context, and a more nuanced way forward.

Takeaways:

POTS is a pattern, not always a root cause, and multiple conditions can drive the same autonomic symptoms.

Normal routine labs do not rule out nutrient deficiencies, including B12 or thiamine deficiency.

Hormonal, endocrine, mast cell, and neurologic factors frequently overlap, complicating diagnosis and treatment.

Symptoms that persist despite appropriate POTS care are a signal to look deeper, not push harder.

Thoughtful pacing and prioritization matter, helping patients avoid burnout while still advocating effectively.

Find the episode transcript here.

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