Hashimoto’s is an immune story — not only a hormone one

You were told you have Hashimoto’s, handed a prescription for thyroid hormone, and asked to come back for a TSH check. The medication may have helped — sometimes a great deal. But for many people, a TSH back in range does not bring everything else back with it. The fatigue lingers, joints ache, digestion is unsettled, and the antibody result that led to the diagnosis is never mentioned again.

That gap exists because Hashimoto’s is two things at once. It is a thyroid that gradually produces less hormone, and it is an immune system that has turned against the thyroid. Replacement hormone addresses the first. The second is where there is often more to do.

What Hashimoto’s actually is

Hashimoto’s thyroiditis is an autoimmune condition. The immune system produces antibodies against thyroid tissue — most often against thyroid peroxidase (TPO), the enzyme that builds thyroid hormone, and sometimes against thyroglobulin, the protein the hormone is assembled on. Immune cells infiltrate the gland, and the tissue that makes hormone is gradually damaged. As output falls, the pituitary raises TSH to compensate, until eventually the gland cannot keep up.

It is the most common cause of an underactive thyroid in this country, and it tends to move slowly. Antibodies can be elevated long before TSH changes, which is one reason we run them as part of a full thyroid panel rather than waiting for TSH to move. Early on, some people swing briefly toward overactive symptoms — palpitations, anxiety, poor sleep — as inflamed tissue releases stored hormone, and then back again. That back-and-forth is confusing, and it is part of the condition.

Thyroid hormone replacement is often the right call

We want to be direct about this. When the gland is no longer producing enough hormone, replacement is often necessary, appropriate, and genuinely helpful. Thyroid hormone is not optional — it sets the pace of nearly every tissue in the body — and no herb, diet, or needle substitutes for it when the gland cannot make enough. Nothing in this article is an argument against it.

Decisions about starting, dosing, or changing thyroid medication belong with your prescribing doctor. What functional medicine adds is the other half of the question: what is driving the immune response, and what in the body’s environment is keeping it active. Working on those can improve how people feel on their medication, and it attends to the immune side of the condition, which the prescription was never designed to address.

What we look at alongside the prescription

Autoimmunity generally involves three things: a genetic susceptibility, one or more triggers, and a state of the body that allows the immune response to continue. Genetics is fixed. The other two are where we look.

• The gut. A large share of the immune system sits along the intestinal lining, where it meets food, microbes, and everything else from the outside world. Imbalances in the microbiome and increased intestinal permeability are associated with autoimmune activity, and low stomach acid and poor absorption are common in hypothyroid patients. We often test here.
• Selenium. The thyroid is one of the most selenium-rich tissues in the body. Selenium-dependent enzymes protect the gland from the hydrogen peroxide it generates while making hormone, and they also drive the conversion of T4 into active T3. Status is worth knowing; more is not better, and too much is harmful, so this is something to test and discuss rather than guess at.
• Iron. Thyroid peroxidase is an iron-dependent enzyme. Low ferritin is common in Hashimoto’s — particularly in women with heavy periods — and it can blunt hormone production and keep fatigue and hair loss in place even when TSH is well controlled.
• Vitamin D. Vitamin D helps regulate immune tolerance, and low levels are frequently seen in autoimmune thyroid disease. It is simple to measure and worth measuring.
• Blood sugar. Swings in glucose and insulin drive inflammation and stress-hormone output, both of which feed immune activity and slow thyroid hormone conversion. Steadier blood sugar is one of the less glamorous and more useful changes.
• Stress and cortisol. Chronic stress shifts immune balance and pushes T4 toward inactive reverse T3. Many people can trace the start of their symptoms to a particularly demanding stretch of life — a pregnancy, a loss, an illness. That history matters.

None of these is a cause on its own, and not every one applies to every patient. This is the practical meaning of collecting all the pieces of the puzzle: testing to see which of them are actually present, then working on the ones that are.

The gluten question, stated honestly

Gluten comes up in nearly every conversation about Hashimoto’s, and it deserves an honest answer rather than a slogan. Celiac disease is more common in people with autoimmune thyroid disease than in the general population, so screening for it is reasonable. Beyond celiac, the proposed mechanisms — similarities between gluten proteins and thyroid tissue that may confuse the immune system, and effects on intestinal permeability — are plausible, and some people clearly feel better and see their antibodies settle when they remove gluten. Others see no change at all.

What the evidence does not support is the claim that every person with Hashimoto’s must go gluten-free for life. We treat it as a question to answer for the individual. Test for celiac first, while gluten is still in the diet, because removing it beforehand can make the test unreliable. Then, if it makes sense, a structured elimination and reintroduction, with attention to both symptoms and antibodies. That tells you more than a blanket rule does.

The prescription replaces the hormone the gland can no longer make. Our work is on the immune process that damaged it — the two belong together.

Acupuncture and herbs as supportive care

Acupuncture and Chinese herbal medicine are supportive care in Hashimoto’s — not a replacement for thyroid hormone, and not a treatment that makes the autoimmune condition go away. Where they help is in the terrain around it: the stress response, sleep, digestion, and the fatigue that often persists even when the labs look controlled. Acupuncture shifts the nervous system toward a calmer, parasympathetic state, which is part of why it is useful for stress, anxiety, and sleep.

In TCM terms, Hashimoto’s often presents as Spleen Qi deficiency with Kidney Yang deficiency — fatigue, coldness, heaviness, sluggish or loose digestion — sometimes with Liver Qi stagnation layered on top when stress is prominent. Qi here means the functional capacity of those systems, and the pattern tells us how to treat the whole person rather than only the gland. Herbal formulas are chosen for that pattern and reviewed against your medications, because some herbs and supplements affect thyroid function or the absorption of thyroid hormone and need to be coordinated with your prescribing doctor.

How we approach Hashimoto’s

We start with a thorough history and a look at what has already been tested. Then we fill in what is missing: the full thyroid panel including both antibodies, iron studies, vitamin D, blood sugar markers, and — depending on the history — gut and stress-hormone testing. The plan that follows works alongside your existing care, not around it, and we share what we find with your prescribing doctor.

Our approach is patient care rather than disease care. The diagnosis carries the same name for many people, but the drivers behind it differ from one person to the next, and so does the plan. If you have Hashimoto’s and feel there is more to the story than the prescription, get in touch and we can talk through where to begin.

The journal is written by Dr. Nazzar from the practice. Articles reflect clinical observation and current research, not personalized medical advice. To explore your own case, schedule a consultation.