You are not alone in this

When you are the one who is tired, foggy, aching, and quietly managing all of it while the world expects you to be 'fine,' Autoimmunity can feel like the loneliest thing in the world. So before we go any further, I want you to see how much company you actually have.

I am not doing this to shrink your experience down to a statistic. I am doing it to remind you that you are part of something widely shared, even when it feels solitary. There is a particular relief that comes from learning that what you carry has a name, a shape, and millions of others carrying it too.

If you are new here, this piece on how common Autoimmunity is belongs to the Autoimmune Recovery Method (ARM), a complete approach to moving an Autoimmune condition 'Toward Remission'. Seeing your real numbers is one of the first steps, and the whole approach is mapped in 'The ARM Map: The Whole Method, Start to Finish'. You do not have to take it in all at once. Start right here, with the company you have.

What the numbers actually show

In early 2025, a Mayo Clinic study did something that, remarkably, had never been done before. It counted. For all the decades that Autoimmunity has been studied, no one had ever pinned down how many of us are actually living with it.

Using the health records of more than 10 million people, researchers estimated that about 15 million Americans, 4.6 percent of us, roughly 1 in 22, have been diagnosed with at least 1 of 105 different Autoimmune conditions.

More than 100 conditions. That number alone tells you how varied, and how common, this is.

These are not rare diseases gathered into a footnote. This is one of the most widespread categories of chronic illness there is, and almost no one talks about it that way.

And that is only what gets diagnosed. The diagnosed figure is the visible tip of something much larger. Conservative diagnosed figures put Autoimmunity at about 1 in 10 of us overall, and roughly 1 in 8 women. Through a functional medicine lens, an estimated 1 in 6 women is living with Autoimmunity, much of it undiagnosed.

Sit with that for a moment. Breathe it in. If your own diagnosis took years, if you spent that time being told you were 'fine,' you are not an outlier in that story either. You are part of a very large, very quiet group, most of whom were also told their labs looked 'normal' while their bodies told them otherwise.

3 things from the Mayo study are worth holding, and each one will probably feel familiar.

This lands hardest on women

Women make up about 63 percent of everyone diagnosed, close to twice the rate of men. This is not a coincidence and it is not delicacy. Female immune systems are more reactive by design.

Part of this traces to our biology at the deepest level. Women carry two X chromosomes, and the X chromosome is densely packed with immune-related genes, which gives the female immune system more firepower and more ways for its signals to cross.

That same reactivity that protects us, that helps a woman's body defend a pregnancy and fight infection, can also tip into attacking self.

Layer on top of that the hormonal tides of menstruation, pregnancy, postpartum, and Perimenopause, each of which moves immune reactivity up or down, and you can see why so many women find their condition surfacing or worsening around a hormonal threshold.

If you are a woman who has felt dismissed, told your labs are 'normal' while your body says otherwise, you are not imagining the pattern. The biology genuinely weighs differently on us, and far too much care has not caught up to that. That is NOT your fault, and it is not in your head.

These conditions travel together

About a third of people with 1 Autoimmune diagnosis are eventually diagnosed with another. There is even a name for it when several cluster in one person: polyautoimmunity.

What is really happening is the same underlying dysregulation expressing itself in more than 1 place. It is not bad luck stacking up, and there is no malice repeating itself in your body.

Your immune system is not malicious and it has not betrayed you. It is a devoted, exhausted protector working from crossed signals, mounting a real and loyal defense against a target it has misidentified. Mistaken identity, not malice. The immune system that lost its way with the thyroid is the same immune system meeting your joints, your skin, your gut, working from the same crossed signals.

Once 1 system is affected, others can become more vulnerable, because the conditions that allowed the first attack, the permeable gut, the inflammation, the unaddressed triggers, are still present. The label changes; the terrain underneath it does not.

This is exactly why the Autoimmune Recovery Method works at the level of the whole terrain, the gut and the nervous system and the triggers, rather than chasing 1 symptom at a time.

When you tend the soil, you are tending every plant growing in it, including the ones that have not surfaced yet.

You can probably find yourself on the list

The most common Autoimmune conditions in this country each affect around a million Americans or more: rheumatoid arthritis, psoriasis, type 1 diabetes, Graves' disease, Hashimoto's (which is Autoimmune thyroiditis), inflammatory bowel disease (Crohn's and ulcerative colitis), multiple sclerosis, and lupus. Just below those, still numbering in the hundreds of thousands, are Sjögren's, celiac, and polymyalgia rheumatica.

If you carry any of these, you are among the most common stories there is, and common stories are the ones the most has been learned about.

I want to single out celiac for a moment, because it belongs here in a particular way. It does not top the list by raw numbers, and it is more relevant to a food-based protocol than almost anything else on it. The Autoimmune Protocol grew up around the gut, and your gut is precisely where celiac lives. If that is your diagnosis, you are not at the edge of this work. You are close to its center.

And if your particular diagnosis is none of these, you still belong here. There are more than 100 of these conditions, and the great majority of them share the same terrain: a dysregulated immune system, often a more permeable gut, a stack of triggers.

ARM works on the shared terrain, which is why it can help across so many different labels. You do not need the same name as someone else to share the same path back.

Accurate company makes it lighter

I am not telling you any of this to make Autoimmunity sound ordinary. It is not ordinary to you, and it was never meant to be. Your fatigue is yours. Your years of being unheard are yours.

I am telling you because isolation makes everything harder, and accurate company makes it lighter. Millions of people are working out how to live well inside a body like yours. Many of them are doing some version of exactly what you are about to do, and many of them are doing well.

So take 1 slow breath before we go on. Let the shoulders drop. You are not the exception. You are not too complicated, too far gone, or alone. You are 1 of many, holding a real and shared challenge, and you have a companion for the road.

And there is a quiet, steady voice in you that has been with you the whole way, the one that brought you to this page. Sometimes it seems to speak from your head, sometimes your heart, sometimes from the space between your thoughts. It is the part of you that keeps championing for you, even on the days you cannot quite champion for yourself. Begin to notice it, and trust it. Let's keep going.