If you’re worried about Alzheimer’s, memory isn’t the first thing I want to talk about.
That may sound strange coming from a physician who focuses on brain health. But by the time someone notices significant changes in memory, some of the biological processes contributing to cognitive decline may have been developing for years.
That’s why I’d rather start earlier.
There is no single diet, supplement, lab test, or “brain hack” that guarantees you won’t develop dementia. But there are several areas of health that consistently matter when we’re thinking about protecting the brain and building cognitive resilience for the decades ahead.
Here’s where I start.
1. Metabolic Health and Your Brain
The brain is an incredibly energy-hungry organ, so I pay close attention to how well someone is producing and using energy.
That means looking beyond whether glucose is technically “normal.” Depending on the individual, I may look at fasting glucose, fasting insulin, hemoglobin A1c, triglycerides, body composition, blood pressure and other markers of metabolic health.
Insulin resistance and poor metabolic health are associated with increased risk of cognitive decline and dementia. The encouraging part is that metabolic health is also something we can influence.
Regular movement, resistance training, adequate muscle mass, high-quality nutrition, good sleep and appropriate meal timing can all play a role.
2. Sleep and Cognitive Health
If you want a healthier brain, don’t treat sleep as optional.
During sleep, the brain is doing important work related to memory consolidation, cellular repair and metabolic waste clearance. Poor sleep can also worsen insulin resistance, inflammation, appetite regulation and stress physiology.
I’m especially interested in persistent insomnia, fragmented sleep, inadequate sleep and possible sleep apnea.
You can eat a pristine diet and take a shelf full of supplements, but if you’re sleeping five hours a night or have untreated sleep apnea, we need to address that.
3. Exercise, Muscle and Cardiovascular Fitness
Exercise is one of the most powerful tools we have for supporting long-term brain health.
I want people doing more than simply “being active.” Ideally, we’re intentionally building several capacities: cardiorespiratory fitness, strength, muscle mass, balance and coordination.
Exercise also influences factors involved in neuroplasticity—the brain’s ability to adapt, learn and form new connections.
And muscle matters more than many people realize. Maintaining strength and lean mass as we age supports metabolic health, mobility and resilience.
4. Nutrition and Nutrients for Brain Health
I generally start with food before supplements.
That means a nutrient-dense, whole-food diet with plenty of colorful plants, adequate protein, healthy fats, fiber and foods rich in polyphenols—the beneficial plant compounds found in things like berries, herbs, spices, cocoa and deeply colored vegetables.
But nutrition also needs to be individualized.
Depending on someone’s history and symptoms, I may evaluate nutrients involved in neurologic function and methylation, including B vitamins, vitamin D, magnesium, omega-3 status, iron and other nutrients.
More supplementation isn’t automatically better. The goal is to identify what that person actually needs.
5. Stress and Nervous System Resilience
Chronic stress isn’t just something you feel emotionally. It creates physiological effects throughout the body.
Long-term dysregulation of the stress response can affect sleep, glucose regulation, inflammation, mood and cognitive performance.
That doesn’t mean eliminating stress—which would require moving to an island and probably turning off your phone forever.
It means improving your ability to recover from it.
Breathing practices, meditation or prayer, time outside, exercise, meaningful relationships, boundaries and adequate recovery can all be useful tools.
6. Social Connection, Purpose and Cognitive Engagement
Brain health isn’t just biology on a lab report.
Humans need meaningful relationships, purpose, learning and engagement.
Isolation and loneliness have been associated with worse cognitive outcomes, while staying socially and cognitively engaged appears to be protective.
Keep learning. Build things. Serve people. Maintain friendships. Learn an instrument. Take a class. Have conversations that require more than sending someone a meme.
Your brain responds to being used.
7. Understanding Your Individual Alzheimer’s Risk Factors
This is where brain-health care becomes much more personalized.
Alzheimer’s disease is not necessarily driven by the exact same combination of factors in every person. Two people can have similar cognitive symptoms—or even similar findings on brain imaging—but very different vulnerabilities contributing to the disease process.
In clinical practice, I find it useful to think in terms of different patterns or subtypes of risk. One person may have a predominantly metabolic picture, with insulin resistance, elevated glucose, visceral fat, or other signs of impaired metabolic health. Another may have significant vascular risk from hypertension, poor circulation, or cardiovascular disease. Others may have patterns involving chronic inflammation, hormonal or nutrient deficiencies, impaired detoxification or significant environmental exposures, or a combination of several of these.
These aren’t rigid categories, and Alzheimer’s is increasingly understood as a complex, multifactorial disease. But looking for these patterns can help us move beyond a generic list of “brain healthy” recommendations and ask a much more useful question: What appears to be driving risk in this particular person?
That starts with a detailed health history, family history, lifestyle and environmental exposures, along with targeted testing. Depending on the individual, I may look at genetics such as APOE, glucose and insulin regulation, cardiovascular markers, inflammatory markers, hormones, nutrient status, thyroid function, sleep and sleep apnea, hearing, medications, toxin exposures, and other factors that could be affecting brain health.
Genetics are an important part of that picture, but they aren’t the whole story. Even a higher-risk variant such as APOE4 doesn’t tell us with certainty whether someone will develop Alzheimer’s. It tells us something about susceptibility, which can help us decide where to pay closer attention.
Once we understand someone’s individual pattern of risk, we can build a more targeted plan: improving insulin sensitivity and metabolic health where needed, aggressively addressing cardiovascular risk, correcting meaningful nutrient deficiencies, improving sleep, building muscle and aerobic fitness, supporting healthy hormone and thyroid function when appropriate, reducing relevant exposures, and addressing other modifiable contributors.
Our goal is to identify as many meaningful, modifiable risk factors as we can—and then work systematically to improve them while building greater cognitive and metabolic resilience over time.
Don’t wait for memory problems
You don’t need to become obsessive about every biomarker or buy every longevity gadget that shows up in your Instagram feed.
Start with the big things.
Sleep well. Build muscle. Exercise your heart. Protect your metabolic health. Eat real food. Stay connected. Keep learning. And understand your individual risks.
The earlier we start working on these things, the more time we give ourselves to build resilience.
Brain health isn’t something to start thinking about at 70.
It’s something we build throughout our lives.
Ready to take a closer look at your brain health?
If you’re concerned about your memory, have a family history of Alzheimer’s, or simply want to be proactive about protecting your brain as you age, you don’t have to wait for symptoms to start asking questions.
At Resolve Medical, we take a personalized approach to brain health—looking at your history, risk factors, lifestyle, labs, metabolic health, hormones, nutrient status, and other factors that may be influencing how your brain is aging.
Ready to get started? Schedule a consultation with our team to create a personalized plan for your long-term brain health.
