Alzheimer’s, Brain Inflammation, and Early Detection: A Functional Medicine Perspective
Early Testing for Alzheimer’s: Discussing the Alzheimer’s LINK test with Chase Zittrauer
Alzheimer’s disease does not usually begin the moment memory symptoms appear. In this article, Dr. Jim Chialtas explores how a functional medicine approach may help identify earlier signs of brain stress, including immune reactivity, inflammation, infections, metabolic patterns, environmental exposures, and barrier dysfunction that may affect long-term cognitive health.
Alzheimer’s disease is one of the most feared diagnoses a person or family can face. It affects memory, independence, relationships, finances, and quality of life in a profound way. But one of the most important points I want people to understand is this:
By the time cognitive symptoms are obvious, the process may have been developing for years.
That is why, from a functional medicine perspective, I am often less interested in waiting for a diagnosis and more interested in asking earlier questions:
What is stressing the brain?
Is the immune system involved?
Are there environmental, infectious, metabolic, or dietary triggers contributing to neuroinflammation?
And can we identify some of those triggers before the damage progresses?
In this episode of A Functional Approach, I spoke with Chase Zittrauer from Cyrex Laboratories about Alzheimer’s disease, brain inflammation, immune reactivity, and the Cyrex Alzheimer’s LINX™ test, a specialized panel designed to look at possible immune-related contributors to neurological decline.
Alzheimer’s Is Not Usually a One-Cause Problem
For many years, Alzheimer’s disease was strongly associated with amyloid plaques and tau tangles in the brain. These proteins are still important, but the picture has become more complex.
Some people have plaques and tangles without obvious symptoms of Alzheimer’s, while others may have cognitive decline without the classic level of plaques and tangles. That tells us this is not simply a one-marker, one-cause condition.
This is also why a single drug or “monotherapy” approach has had limited success. If many different factors contribute to brain degeneration, then only targeting one piece of the puzzle may not be enough.
I think of it this way: a neuron can become sick and unable to clean up waste properly. In a healthy system, cells have mechanisms to clear damaged or misfolded proteins. But when the brain is under repeated stress, those cleanup systems may struggle.
Some possible contributors include:
Blood sugar and insulin dysregulation
Chronic inflammation
Environmental chemical exposure
Food immune reactivity
Reactivated or chronic infections
Gut barrier dysfunction
Blood-brain barrier dysfunction
Traumatic brain injury
Genetic risk factors
Oral microbiome issues
This is why Alzheimer’s is sometimes discussed in functional medicine circles as a multi-factorial condition, rather than a single disease process with one simple cause.
Why Early Testing Matters
One of the central themes of this conversation was early detection.
I see the Cyrex Alzheimer’s LINX™ panel as potentially useful for people who want to look for immune and inflammatory triggers before major cognitive decline appears. This might include people with:
A family history of Alzheimer’s or dementia
Positive genetic risk factors, such as APOE-related risk
A history of traumatic brain injury or repeated concussions
High-contact sports history
Neurological symptoms or brain fog
Age-related concern, especially after midlife
The goal is not to diagnose Alzheimer’s from one lab test. Instead, the goal is to look for signs of immune reactivity and neuroinflammatory stress that may be worth addressing early.
In other words, this type of testing asks:
“What might be irritating or inflaming the nervous system right now?”
What the Cyrex Alzheimer’s LINX™ Panel Looks At
One reason I find this test interesting is that it looks at multiple categories that may be relevant to brain health and immune activity.
The panel includes immune reactivity related to:
Brain proteins
These include markers such as amyloid beta, tau protein, and alpha-synuclein. These proteins are associated with neurodegenerative processes, including Alzheimer’s and Parkinson’s-related patterns.
The test is not simply looking for the presence of these proteins. It is looking at whether the immune system is reacting to them.
That distinction matters.
If the immune system is producing antibodies that react with brain-related proteins, it may suggest a loss of immune tolerance or an inflammatory process involving neurological tissue.
Blood-brain barrier proteins
The blood-brain barrier is a protective barrier that helps regulate what gets into the brain. I often compare it to other body barriers, such as the gut lining.
When the blood-brain barrier is compromised, substances that should not enter the brain may gain access. This can activate immune cells in the brain and contribute to neuroinflammation.
The blood-brain barrier does more than physically protect the brain. It also plays an immune-regulating role. When that barrier becomes weakened, the brain may lose some of its natural “brakes” on inflammation.
Pathogens
The panel also looks at immune reactivity to certain pathogens that may cross-react with brain-related proteins.
This is where the concept of molecular mimicry becomes important.
Molecular mimicry means the immune system may mistake one thing for another. For example, antibodies made against a pathogen may also react with human tissue if the structures look similar enough.
In the context of brain health, that means certain infections may potentially trigger immune activity that overlaps with brain tissue or Alzheimer’s-associated proteins.
Examples discussed in the episode include herpes viruses, gut-related pathogens, and oral pathogens.
The Mouth-Brain Connection
One of the most practical takeaways from this conversation is the importance of oral health.
Dental infections, gum disease, old root canals, and oral pathogens can become major sources of immune activation. The oral microbiome is an important category to consider when thinking about Alzheimer’s and dementia risk because of the mouth’s close proximity to the brain.
If someone is producing antibodies against oral pathogens, and the blood-brain barrier is compromised, those immune signals may have easier access to the brain environment.
This does not mean every dental issue causes Alzheimer’s. But it does mean oral health should not be ignored in a comprehensive brain health strategy.
Taking care of the mouth is taking care of the whole body.
Food Immune Reactivity and the Brain
One of the more surprising parts of this discussion was the role of certain foods.
The Cyrex Alzheimer’s LINX™ panel includes certain foods that may be cross-reactive with amyloid beta or other brain-related immune targets. These include examples such as:
Eggs
Lentils and peas
Canned tuna
Hazelnuts and cashews
Scallops and squid
Dairy casein
Wheat-related proteins
This does not mean these foods are “bad” for everyone. In fact, many of them are commonly considered healthy foods.
That is the point.
A food can be nutritious in general, but still be inflammatory for a particular person if their immune system is reacting to it.
For example, someone might eat what appears to be a healthy day of meals: eggs for breakfast, a tuna sandwich for lunch, and lentil soup for dinner. For one person, that may be a balanced diet. For another person with specific immune reactivity, those same foods could be adding fuel to an inflammatory fire.
Functional medicine often asks not just, “Is this food healthy?”
But also, “Is this food healthy for this person, at this time?”
Chemicals, Neoantigens, and Immune Confusion
We also discussed environmental chemicals, including aluminum, mercury, and phthalates.
A key concept here is something called a neoantigen.
Some chemicals are too small to trigger a strong immune response by themselves. But when they bind to human tissue, they can create a new structure the immune system does not recognize. This new structure is called a neoantigen.
The immune system may then begin attacking that chemical-tissue combination. Over time, this can potentially move the immune system closer to attacking the body’s own tissues.
This is one way chemical exposure may contribute to immune dysregulation.
We talked about practical exposure examples, such as plastics, personal care products, canned foods, and K-cups. The point is not panic. The point is awareness.
Small swaps can reduce exposure over time:
Use stainless steel or glass instead of plastic when possible
Avoid heating food or drinks in plastic
Choose cleaner personal care products
Reduce reliance on highly packaged foods
Pay attention to canned food exposure
Support detoxification carefully and appropriately
Traumatic Brain Injury and Neuroinflammation
Traumatic brain injury, even from concussions years earlier, may be another important contributor to neurological inflammation.
This category includes not only obvious major injuries, but also repeated concussions from sports, car accidents, or other trauma.
A head injury can disrupt the blood-brain barrier, activate inflammatory pathways, and affect immune regulation.
We also touched on emotional trauma and grief. The point is not that grief “causes” dementia in a simple way, but that major stressors may sometimes accelerate a process that was already developing.
The brain is deeply connected to the immune system, gut, hormones, emotions, and stress response. It does not exist in isolation.
Gut Barrier and Brain Barrier: Why They Often Go Together
Toward the end of the conversation, Chase recommended pairing brain-related testing with gut barrier testing, such as Cyrex Array 2.
The gut and brain communicate constantly. If the gut barrier is compromised, bacterial toxins such as lipopolysaccharides may enter circulation and contribute to systemic inflammation.
Lipopolysaccharides are endotoxins found in certain bacteria. When they enter the bloodstream through a compromised gut barrier, they can affect multiple systems, including the brain.
This is one reason I often consider gut health when evaluating brain fog, cognitive symptoms, inflammation, and autoimmune patterns.
The gut-brain connection is not just a wellness slogan. It is a biological conversation happening every day.
The Functional Medicine Takeaway
The most important message from this episode is not fear. It is timing.
If someone waits until memory loss is severe, options may be more limited. But if potential triggers are identified earlier, there may be more opportunity to reduce inflammatory burden and support brain resilience.
A functional approach may include:
Blood sugar and insulin support
Identifying food immune reactivity
Reducing environmental chemical exposure
Addressing oral health
Supporting gut barrier integrity
Evaluating blood-brain barrier integrity
Investigating chronic or reactivated infections
Supporting detoxification safely
Reducing inflammatory load
Personalizing diet and lifestyle strategies
There is no single magic fix for Alzheimer’s disease or cognitive decline. But there may be many meaningful levers to pull, especially when someone starts early.
When to Consider a Deeper Brain Health Evaluation
You may want to explore a deeper functional medicine evaluation if you have:
A family history of Alzheimer’s or dementia
Brain fog that is worsening or persistent
A history of concussion or traumatic brain injury
Known autoimmune disease
Chronic inflammatory symptoms
Gut issues alongside cognitive symptoms
Dental or gum disease concerns
Significant chemical exposures
Concerns about genetic risk
A desire to be proactive about long-term brain health
Testing is not about collecting scary information. It is about finding useful information.
The earlier we understand what may be stressing the system, the earlier we can make targeted changes.
A More Personalized Path Forward
Alzheimer’s disease is complex, emotional, and often overwhelming. But complexity is exactly where functional medicine can be helpful.
Instead of asking one narrow question, I look at the larger terrain: immune function, gut health, blood sugar, inflammation, environmental exposure, diet, infections, oral health, and the body’s ability to repair.
If you are concerned about cognitive decline, brain fog, family history, or long-term brain health, a functional medicine consultation can help you understand what may be worth investigating in your specific case.
You do not have to wait until symptoms become severe to start asking better questions.
Want to learn more?
If you are concerned about brain fog, cognitive changes, family history of Alzheimer’s or dementia, prior head injuries, or long-term brain health, I offer advanced functional medicine assessment that may include the Cyrex Alzheimer’s LINX™ test when appropriate.
This test is not ordered casually or used as a stand-alone diagnosis. It is considered as part of a full appointment, health history, symptom review, and clinical evaluation so we can decide whether it is the right fit for your situation.
Schedule a consultation to discuss your concerns, review your health history, and determine whether this type of brain health and immune reactivity testing may be appropriate for you.
Listen to the Full Conversation
Click on the player below for this episode of A Functional Approach with Dr. Jim Chialtas
This article is for educational purposes only and is not intended to diagnose, treat, prevent, or cure Alzheimer’s disease or any other medical condition. Testing recommendations are made on an individual basis after clinical assessment. Always consult your qualified healthcare provider before making medical decisions or changing your treatment plan.
