Lithium and Alzheimer’s: What the Harvard Discovery Does and Doesn’t Mean
A 2025 Harvard study linked lithium deficiency to Alzheimer’s disease. A preventive neurologist explains what the science shows — and why you should not start lithium supplements on your own.
The Shingles Vaccine and Dementia: A Surprising Connection
Can the shingles vaccine lower your risk of dementia? A preventive neurologist reviews the striking 2024–2025 evidence, including a natural experiment in Wales, and what it means for you.
Ozempic and Your Brain: What the GLP-1 Trials Actually Showed
Do GLP-1 drugs like Ozempic and Wegovy protect the brain? A preventive neurologist unpacks the 2026 EVOKE trial results and what they actually mean for dementia risk.
Creatine for Brain Health: Beyond the Gym
Creatine isn’t just for building muscle. A preventive neurologist reviews the evidence for creatine, cognition, menopause, and brain aging — and how to use it sensibly.
Early Signs of Alzheimer’s vs. Normal Aging: How to Tell the Difference
Most of us forget where we put our keys. But there is a meaningful difference between normal age-related forgetting and the early changes that signal Alzheimer’s disease. Here is how a preventive neurologist thinks about the distinction — and why recognizing it sooner changes everything.
Blood Tests for Alzheimer’s Risk: What’s Available Now and What They Mean
For decades, confirming Alzheimer’s pathology required expensive PET imaging or an invasive spinal tap. That is changing. A new generation of blood biomarkers can now detect Alzheimer’s-related brain changes years before symptoms appear — and they are beginning to reach clinical practice.
What Is APOE4, and What Does It Actually Mean for Your Brain?
APOE4 is the single strongest genetic risk factor for Alzheimer’s. Here’s what it is, what it isn’t, and what you can actually do about it.
Sleep and Alzheimer’s: What the Research Actually Says
Poor sleep doesn’t just make you tired. It disrupts the brain’s waste clearance system — and the damage accumulates over decades. Here’s what the science says.
The 45%: What Modifiable Risk Factors Mean for Dementia Prevention
The 2024 Lancet Commission identified 14 modifiable risk factors that together account for approximately 45% of dementia cases worldwide. Here’s what that figure actually means, and how it becomes a clinical checklist.