Can Alzheimer’s Be Prevented or Reversed?
Based on the work of Dale Bredesen, a neurologist and Alzheimer’s disease researcher
Dr. Dale Bredesen views Alzheimer’s as a complex, multifactorial condition rather than a disease with a single cause.
His ReCODE program uses extensive testing to identify possible contributors to cognitive decline—including metabolic health, inflammation, nutrition, sleep, cardiovascular health, and hormonal factors—and develops an individualized program to address them.
Bredesen emphasizes prevention and early intervention. Published studies of his approach have reported encouraging results, although larger controlled trials are needed.
His central idea particularly interests me: if many factors contribute to cognitive decline, it makes sense to identify and address as many of them as reasonably possible—preferably before significant cognitive decline occurs.
The Bredesen Approach
Dr. Bredesen has spent decades studying the mechanisms involved in neurodegenerative disease. He argues that Alzheimer’s is not simply one disease with one cause, but a syndrome that may result from a combination of factors that differ from person to person.
He sometimes compares Alzheimer’s to a “roof with many holes.” Fixing only one hole may not be enough. Similarly, he argues that targeting amyloid with a single drug may not address insulin resistance, inflammation, poor sleep, nutritional deficiencies, vascular problems, or other potential contributors to cognitive decline.
His ReCODE program therefore attempts to identify an individual’s particular risk factors and address them simultaneously.
Rather than asking only, “What drug treats Alzheimer’s?” Bredesen asks a different question:
“Why is this particular person experiencing—or at risk for—cognitive decline?”
The Bredesen Seven
Bredesen summarizes the foundation of his approach as “The Bredesen Seven”—seven areas intended to support brain health and reduce potentially modifiable risks:
Nutrition — a nutrient-dense, low-glycemic diet that often includes mild ketosis and overnight fasting.
Exercise — aerobic activity, strength training, and regular movement.
Sleep — adequate restorative sleep and attention to problems such as sleep apnea.
Stress management — reducing chronic stress through practices such as mindfulness, meditation, or other approaches.
Brain stimulation — continued learning, social engagement, and cognitive activity.
Reducing harmful exposures — identifying and limiting environmental exposures that may be relevant to an individual.
Supplementation — individualized supplements based on testing, nutritional needs, and other factors.
These are not intended as seven identical prescriptions for everyone. The ReCODE program uses cognitive testing, laboratory tests, medical history, genetics, and other information to identify an individual's particular risks and develop a personalized plan.
What the Evidence Shows
Evidence increasingly supports the broader idea that multiple modifiable factors influence cognitive health. Exercise, cardiovascular and metabolic health, blood pressure, sleep, diet, and social and cognitive activity have all become important areas of Alzheimer’s prevention research.
Small studies and observational research evaluating Bredesen-style personalized programs have reported encouraging improvements in some people with mild cognitive impairment or early Alzheimer’s disease.
The complete ReCODE program has not been established in large randomized controlled trials. Such trials are particularly difficult for a complex, individualized program in which participants may make numerous changes at the same time. This also makes it difficult to determine how much benefit comes from the overall program, from particular components, or from other factors.
I find the early results encouraging and the approach promising.
What I Find Important
Bredesen’s work has had a major influence on how I think about Alzheimer’s prevention.
What appeals to me most is the emphasis on acting before significant cognitive decline occurs. Rather than waiting for symptoms and then treating them, the approach looks for potentially modifiable risks while a person is still cognitively healthy.
That is particularly meaningful to me because Alzheimer’s and dementia have occurred in my family. Although I have no symptoms, I currently use a medical practice that follows the Bredesen approach.
I cannot know whether these efforts will prevent Alzheimer’s. But I would rather identify and address reasonable risk factors now than wait to see whether cognitive problems develop.
That is why I find Bredesen’s emphasis on prevention, personalization, and addressing multiple risk factors so compelling.
Learn More
Information about ReCODE, cognitive-health programs, and Bredesen-trained practitioners.
A concise explanation of the seven foundational areas of the Bredesen approach: nutrition, exercise, sleep, stress management, brain stimulation, reducing harmful exposures, and individualized supplementation.
Directory of practitioners and coaches trained in the Bredesen approach.
A practical guide to Bredesen's approach to preventing and addressing cognitive decline.
Dr. Bredesen's more recent book emphasizing maintaining cognitive health throughout life.
Videos
Dr. Bredesen explains his approach to preventing and reversing cognitive decline by identifying and addressing the multiple factors that may contribute to Alzheimer’s disease.
Dr. Bredesen explains his view that Alzheimer's results from multiple contributing factors and describes his personalized approach to identifying and addressing potential causes of cognitive decline.
Dr. Bredesen discusses recent research on his precision-medicine approach to cognitive decline and explains why he emphasizes identifying and addressing multiple potential contributors to Alzheimer’s disease.