How Does Inflammation Affect Memory and Brain Health?

Inflammation may be one of the most important contributors to memory loss, Mild Cognitive Impairment (MCI), and Alzheimer's disease. Although inflammation is a normal part of healing, chronic inflammation can disrupt brain function and may contribute to progressive cognitive decline.

At the Carroll Institute in Sarasota, Florida, we believe inflammation should not simply be suppressed. Instead, we believe it should be understood. The better question is not "How do we turn inflammation off?" The better question is: why is inflammation occurring in the first place?

That shift in thinking is one of the cornerstones of the Carroll Cognitive Method™ and Precision Medicine.

Why Inflammation Matters

Inflammation is not inherently bad. In fact, it helps the body heal after injury, infection, or stress.

Problems develop when inflammation becomes chronic. Instead of turning on and off as needed, the immune system remains activated. Over time, that persistent activation can interfere with normal brain function.

Consequently, inflammation may affect memory, concentration, mood, processing speed, and energy levels long before a diagnosis of Alzheimer's disease occurs.

What Is Neuroinflammation?

When inflammation affects the brain, researchers often refer to it as neuroinflammation.

Neuroinflammation involves activation of the brain's immune system. Initially, this response may be protective. However, prolonged activation may damage nerve cells, impair communication between neurons, and interfere with energy production.

Increasing evidence suggests that neuroinflammation plays a major role in Alzheimer's disease and other neurodegenerative conditions.

Inflammation May Be More Important Than Amyloid Plaque

For decades, Alzheimer's research focused primarily on amyloid plaque. However, removing amyloid has not produced the degree of clinical improvement that many researchers originally hoped for.

This does not mean amyloid is unimportant. Amyloid may be an important biomarker, contributor, or response mechanism.

Nevertheless, many researchers now believe the bigger question is:

Why is the brain producing amyloid in the first place?

Inflammation may be one answer.

Some experts now view amyloid as a response to injury rather than the primary cause of Alzheimer's disease. If that perspective proves correct, then treating inflammation and its underlying causes becomes critically important.

What Causes Chronic Inflammation?

Many factors may drive inflammation.

• Insulin resistance and blood sugar dysfunction
• Sleep apnea and poor sleep quality
• Chronic stress
• Mold exposure
• Environmental toxins
• Heavy metals
• Gut dysfunction
• Nutritional deficiencies
• Food sensitivities
• Chronic infections
• Hormonal imbalances
• Vascular disease

Because every patient is different, the sources of inflammation vary from person to person. Therefore, one-size-fits-all treatment rarely works.

Inflammation and Brain Energy

The brain consumes enormous amounts of energy. Chronic inflammation interferes with mitochondrial function and glucose metabolism. As a result, brain cells may struggle to produce adequate energy.

Over time, impaired energy production can affect memory, concentration, and overall cognitive performance.

Some researchers have even described Alzheimer's disease as a form of "type 3 diabetes" because of the close relationship between insulin resistance and brain function.

Inflammation and Neuroplasticity

Inflammation can also interfere with neuroplasticity.

Neuroplasticity refers to the brain's ability to learn, adapt, strengthen pathways, and create new connections.

At the Carroll Institute, we often describe neuroplasticity as a turbocharger for Precision Medicine. However, chronic inflammation may interfere with the brain's ability to respond.

Consequently, identifying inflammatory drivers may help create better opportunities for rehabilitation and recovery.

What the EVANTHEA Study Supports

The EVANTHEA Precision Medicine Trial addressed multiple contributors to cognitive decline rather than focusing on a single drug target.

Inflammation was one of those contributors.

Importantly, participants demonstrated improvement in cognitive measures. That result suggests that addressing inflammation and other root causes may create opportunities that extend beyond simply slowing decline.

The Carroll Cognitive Method™ Perspective

The Carroll Cognitive Method™ combines Precision Medicine, Functional Medicine, and Functional Neurology.

Rather than asking how to suppress inflammation, we ask:

What is causing the inflammation?

That question leads to a different strategy. Instead of merely treating symptoms, we investigate the factors driving the process.

Consequently, we often evaluate metabolism, sleep, toxins, hormones, vascular health, stress, nutrition, infections, and brain network function.

Hope Without False Promises

How does inflammation affect memory and brain health?

Potentially in profound ways.

Fortunately, inflammation is not destiny. In many cases, the factors driving inflammation can be identified and addressed.

At the Carroll Institute, we believe patients deserve more than a diagnosis. They deserve an investigation into why the brain is struggling.

Because when the drivers of inflammation are addressed, new opportunities often emerge.

Next Steps

Inflammation can affect memory and brain health in powerful ways. However, the most important question is not simply whether inflammation exists.

The more important question is:

What is causing inflammation in this person’s brain?

At the Carroll Institute, we use the Carroll Cognitive Method™ to investigate the factors that may be driving inflammation, memory loss, Mild Cognitive Impairment, Alzheimer’s disease, and cognitive decline.

If you or someone you love is experiencing memory changes, brain fog, Mild Cognitive Impairment, or Alzheimer’s disease, we encourage you to schedule a discovery phone call with the Carroll Institute to learn whether this approach may be appropriate for you.

Sources

• EVANTHEA Precision Medicine Trial — ClinicalTrials.gov
  https://clinicaltrials.gov/study/NCT05894954
• Precision Medicine Approach to Alzheimer's Disease: Rationale and Implications — Journal of Alzheimer's Disease
  https://pubmed.ncbi.nlm.nih.gov/37807782/
• Neuroplasticity and the Brain — NCBI Bookshelf
  https://www.ncbi.nlm.nih.gov/books/NBK20367/
• What Happens to the Brain in Alzheimer's Disease? — National Institute on Aging
  https://www.nia.nih.gov/health/alzheimers-causes-and-risk-factors/what-happens-brain-alzheimers-disease
• Alzheimer's Disease: A Systems View Provides a Unifying Explanation of Its Development
  https://pubmed.ncbi.nlm.nih.gov/36442193/
• Alzheimer's Disease and the Immune System
  https://pmc.ncbi.nlm.nih.gov/articles/PMC12035277/
• Carroll Cognitive Method™
  https://thecarrollinstitute.com/tci-recode-program
• Dr. Garland Glenn
  https://thecarrollinstitute.com/about-dr-garland-glenn

Medical Disclaimer

This information is provided for educational purposes only and is not intended as medical advice. Individual outcomes vary. No specific result can be guaranteed. Patients should consult a qualified healthcare professional regarding their individual medical situation.

Reviewed by: Dr. Garland Glenn, DC, PhD, IFM, AFMC

Location: Sarasota, Florida

Last Updated: June 19, 2026