- Dr. David Stephens: The Glucose Protocol
- Glucose and the Brain: Dr. David Stephens
- Can Glucose Restore an Under-Fueled Brain?
Dr. David Stephens explores glucose, brain fuel, TBI, Alzheimer’s and chronic illness. Learn what his Glucose Protocol claims and what research shows.
Dr. David Stephens: The Glucose Protocol
What if some brain problems are not simply about the disease itself, but about how much fuel the brain can actually use?
That is the question Dr. David Stephens has spent years investigating.
Stephens is a neuropsychologist with 37 years of clinical experience. His work led to The Glucose Protocol, a 2026 book based on his observations of people with concussion, traumatic brain injury, stress-related problems and other chronic conditions. His central idea is simple: the brain needs glucose, and impaired glucose delivery may contribute to problems far beyond blood-sugar disorders.
Why Does the Brain Need Glucose?
The brain is an energy-hungry organ. Glucose is one of its major fuels, and brain cells depend on a continuous energy supply.
The National Institute on Aging reports that people with Alzheimer’s disease show reductions in glucose entering the brain and changes in brain energy production. Researchers are actively studying how glucose metabolism relates to Alzheimer’s disease.
This is important because it gives Stephens’ theory a biological starting point.
He argues that brain glucose availability can be different from simply measuring glucose in the bloodstream.
TBI, Concussion and Brain Fuel
Stephens’ interest in glucose began with concussion patients. His website says his work developed into a theory that physical trauma, repeated impacts, psychological trauma and chronic stress can interfere with the brain’s ability to receive and use glucose efficiently.
There is established research showing that traumatic brain injury can disrupt cerebral glucose metabolism. Researchers have described an energy crisis after TBI and changes in glucose uptake and utilization.
That does not prove Stephens’ entire protocol, but it makes brain metabolism an important area to investigate.
What About Alzheimer’s, Autism and Cancer?
Stephens’ framework is much broader than concussion.
His website lists reported improvements involving dementia and early Alzheimer’s, cognitive impairment, PTSD, migraines, autoimmune conditions and other chronic problems. It says these are participant-reported outcomes and that randomized controlled trials are still needed.
Online discussions of Stephens’ work have also connected his glucose theory with autism and other neurological conditions. Cancer is another area where glucose metabolism is heavily researched, but that does not mean glucose supplementation has been established as a cancer treatment.
Autism has multiple recognized biological and genetic contributors, and the CDC says scientists are still learning about its causes.
So these subjects deserve research without promising a cure.
Why This Idea Is Getting Attention
The fascinating part of Stephens’ work is that it asks whether conditions normally separated into different medical categories could share a metabolic problem.
His model proposes that trauma or chronic stress may restrict cerebral glucose delivery, leaving the brain under-fueled even when ordinary blood-glucose measurements appear normal. He reports approximately 1,200 people have completed or participated in his protocol across six continents.
That is an intriguing clinical observation.
It is not yet the same as a randomized clinical trial.
The Bigger Question
Brain glucose metabolism is already a legitimate field of neuroscience. Researchers have documented altered glucose metabolism in Alzheimer’s disease and TBI.
Stephens takes those observations further and proposes that restoring adequate brain fuel could help the brain regain control of systems throughout the body.
That is the part that needs testing.
For readers interested in exploring the subject, Stephens’ book provides his complete theory and clinical observations. My own GrowthFactor work also explores unconventional approaches to health and biology.
The most interesting question may not be whether glucose is “good” or “bad.” It may be whether the brain is getting the right amount of fuel, at the right time, and whether impaired brain metabolism can be safely corrected.
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