Preserving memory, judgment, and independence is among the most important reasons people seek preventive care. Some arrive because a parent developed dementia. Others have noticed difficulty concentrating, recalling words, or keeping track of tasks and want to understand whether those changes are significant.

These concerns deserve time and a careful history. Poor sleep, depression, medication effects, nutritional deficiencies, and medical conditions can affect cognition. Vascular disease and neurodegenerative disorders may also be involved, sometimes together. A useful assessment considers these possibilities before deciding what treatment or further evaluation is appropriate.

What a Personalized Brain Health Assessment Involves

I begin by asking what has changed, when it began, and how it affects everyday life. A family member’s observations can be helpful when the patient agrees to their involvement. We review sleep, mood, medications, alcohol use, nutrition, exercise, cardiovascular history, and relevant family history, then use examination and testing to investigate specific concerns.

Cognitive testing can help document performance and provide a reference for follow-up. Results must be interpreted in context: fatigue, anxiety, hearing or vision problems, and familiarity with testing can influence performance. A computerized score does not, by itself, diagnose Alzheimer’s or exclude another neurological condition.

When symptoms suggest a neurological disorder, evaluation through the patient’s primary care clinician, a memory clinic, or a neurologist may be necessary. Brain imaging, formal neuropsychological assessment, or disease-specific testing may be appropriate depending on the findings. Preventive care should complement that evaluation and any indicated treatment.

How Research Informs the Approach

My training with Dr. Dale Bredesen has informed my interest in evaluating multiple potential contributors to cognitive difficulties. This includes considering nutrition, metabolic function, sleep, and other aspects of health together rather than assuming that every patient needs the same intervention.

Research on personalized protocols continues to develop. A small published pilot study reported improvements during a multicomponent program, but its uncontrolled design could not establish which elements were responsible or how outcomes compared with usual care. Such findings warrant further study and should not be presented as proof that a protocol reliably prevents or reverses Alzheimer’s.¹

Larger randomized lifestyle trials provide additional support for coordinated care. In the 2025 U.S. POINTER trial, 2,111 older adults at increased risk of cognitive decline received either a structured lifestyle program or a self-guided program. Both groups improved on cognitive testing, with a greater improvement in the structured group over two years. The trial supports the value of sustained guidance and accountability, while leaving unanswered whether the intervention reduces future Alzheimer’s diagnoses.²

Nutrition That Supports Metabolic and Vascular Health

Nutrition recommendations begin with the person’s current intake, medical conditions, body composition, and ability to prepare and enjoy food. A practical foundation usually includes vegetables, legumes, nuts, fish or other appropriate protein sources, unsaturated fats, and sufficient fiber. Adequate protein and energy intake become particularly important when someone is losing weight unintentionally or struggling to maintain muscle.

Mediterranean-style and MIND dietary patterns offer useful frameworks, but they should not be described as guaranteed dementia prevention. In a three-year randomized MIND diet trial, cognitive outcomes did not differ significantly from those in a comparison group that also received dietary counseling and mild calorie restriction. This finding helps set realistic expectations while leaving substantial reasons to improve overall diet quality.³

A lower-carbohydrate approach may be appropriate for selected patients with metabolic concerns. Ketogenic diets require a more specific discussion of nutritional adequacy, lipid response, medications, and sustainability. They are not a routine requirement for brain health, and their use should not imply an established ability to prevent Alzheimer’s.

Exercise Adapted to the Individual

Aerobic activity and strength training support cardiovascular fitness, glucose regulation, mobility, and independence. The starting prescription depends on current conditioning, balance, orthopedic limitations, and cardiovascular health. For someone who has been inactive, regular walking and progressive resistance exercise may be the most useful first steps.

Higher-intensity intervals can be considered when appropriate, but vigorous exercise is not a prerequisite for beginning. The plan should be challenging enough to encourage progress and manageable enough to continue. Balance work and activities that involve coordination or learning can also help maintain physical function.

Sleep Quality and Sleep Disorders

Sleep problems can impair attention, memory, and daytime function. We consider sleep duration and regularity, insomnia, nighttime symptoms, alcohol use, and medications. Snoring, witnessed pauses in breathing, or excessive daytime sleepiness may warrant an assessment for obstructive sleep apnea.

Research into sleep and the clearance of substances from the brain is important, but it does not justify promising that better sleep will remove Alzheimer’s pathology. The immediate clinical task is to identify and treat sleep problems that are affecting health and function.

Cardiovascular and Metabolic Care

Blood pressure, diabetes, smoking, and vascular disease deserve attention in any discussion of cognitive aging. Vascular injury can affect cognition independently of Alzheimer’s and may coexist with it. Lipid assessment, glucose testing, and other investigations are selected according to the person’s history and clinical needs.

Blood pressure treatment has direct randomized evidence relevant to cognition. In SPRINT MIND, intensive treatment reduced the occurrence of mild cognitive impairment, although the reduction in probable dementia alone was not statistically significant. The participants and treatment conditions matter, so blood pressure targets still require individualization.⁴

ApoB and Lp(a) can help clarify cardiovascular risk when appropriate. They do not diagnose Alzheimer’s, and a favorable metabolic profile does not exclude cognitive disease. These measurements are useful when they inform a specific clinical decision.

Stress, Mood, and Everyday Engagement

Chronic stress, anxiety, and depression can interfere with concentration and memory. Treatment may involve counseling, changes to daily routines, medication when indicated, and practical support for caregiving or work demands. Mindfulness, paced breathing, and biofeedback tools such as HeartMath may help some patients manage stress, but they are not established Alzheimer’s treatments.

Social connection, meaningful activities, and continued learning also deserve attention. Hearing and vision difficulties can limit participation and should be addressed. Recommendations are more likely to help when they fit the person’s interests and circumstances rather than adding an unrealistic schedule of tasks.⁵

Hormonal and Other Medical Contributors

Thyroid disease and other endocrine conditions can affect cognition and should be evaluated when the history or examination suggests them. Menopause symptoms may also influence concentration through disrupted sleep, mood changes, and hormonal fluctuations.

Hormone treatment follows an individualized assessment of symptoms, medical history, and expected benefits and risks. Treating a documented condition is different from assuming that increasing hormone levels protects the brain. Menopausal hormone therapy is not recommended specifically to prevent dementia.⁶

Digestion, Nutrient Status, and Environmental Exposures

Digestive symptoms, restricted diets, and malabsorption can affect nutritional status and may warrant investigation. Documented deficiencies, including vitamin B12 deficiency, should be addressed. The gut-brain relationship is an active field of research, but routine microbiome testing or probiotic use has not been established as a way to prevent Alzheimer’s.

Environmental assessment begins with a credible exposure history, such as occupational contact with lead or another relevant substance. Testing should answer a defined clinical question. General “detoxification” programs have not been shown to prevent cognitive decline, and treatment for a confirmed toxic exposure requires substance-specific medical care.⁷

Supplements may be appropriate to correct a deficiency or meet another specific need. Their purpose, dose, interactions, and continued necessity should be reviewed. They should not be presented as a substitute for evaluation or as a proven Alzheimer’s prevention program.⁵

Following Progress Over Time

An effective plan establishes priorities and a reasonable way to assess progress. Depending on the patient, follow-up may consider sleep, exercise capacity, blood pressure, laboratory findings, cognitive testing, and the ability to manage daily responsibilities. Improvement in one measure is useful, but it should be interpreted alongside the broader clinical picture.

At HormoneSynergy®, the purpose of this work is to identify concerns that can be addressed, support function, and help patients make informed decisions about their health. We explain where evidence is established, where it remains preliminary, and when additional expertise is needed. The plan evolves with the patient’s response and with research that meaningfully changes care.

Related Reading

Learn more through our Preventive Cardiology guide, Metabolic Health and Insulin Resistance guide, and discussion of menopause-related brain fog.

Frequently Asked Questions

Can an individualized plan prevent Alzheimer’s disease?

No plan can guarantee prevention. Addressing medical conditions and modifiable risks can support health, and structured lifestyle interventions have improved cognitive outcomes in trials. This is different from proving that an individual program prevents Alzheimer’s.

What does Dr. Retzler’s approach include?

Assessment may include cognitive concerns, medications, nutrition, exercise, sleep, mood, cardiovascular and metabolic health, and relevant hormonal or nutritional conditions. Testing and treatment depend on the patient’s findings.

Does everyone need a ketogenic diet or supplements?

No. Dietary recommendations depend on nutritional needs, medical conditions, preferences, and sustainability. Supplements should have a defined purpose and are not a proven substitute for Alzheimer’s prevention or treatment.

Can cognitive testing diagnose Alzheimer’s?

Cognitive testing can document performance and help guide evaluation. It does not establish the cause of impairment by itself. Diagnosis may require a fuller medical assessment and specialist testing.

When should memory symptoms receive further evaluation?

Persistent or progressive changes, concerns noticed by others, or difficulty managing familiar responsibilities warrant evaluation. Sudden confusion or new neurological symptoms require urgent medical attention.

References and Further Reading

1. Toups K, et al. Precision Medicine Approach to Alzheimer’s Disease: Successful Pilot Project. 2022. Read the pilot study.
2. Structured vs Self-Guided Multidomain Lifestyle Interventions for Global Cognitive Function: The US POINTER Randomized Clinical Trial. JAMA. 2025. Read the randomized trial.
3. Barnes LL, et al. Trial of the MIND Diet for Prevention of Cognitive Decline in Older Persons. New England Journal of Medicine. 2023;389:602–611. Read the trial.
4. SPRINT MIND Investigators. Effect of Intensive vs Standard Blood Pressure Control on Probable Dementia: A Randomized Clinical Trial. JAMA. 2019;321:553–561. Read the trial.
5. National Institute on Aging. Cognitive Health and Older Adults.
6. International Menopause Society. Brain Fog and Memory Difficulties in Menopause. 2022.
7. National Center for Complementary and Integrative Health. “Detoxes” and “Cleanses”: What You Need To Know.

This article provides general education and does not replace individualized medical advice. Preventive care does not replace diagnostic evaluation or indicated treatment for cognitive impairment or Alzheimer’s disease.