How does APOE4 cause Alzheimer's?
APOE4 does not cause Alzheimer's alone. It raises risk, and research points to five routes: amyloid, tau, immune cells, cholesterol and blood vessels.
Research and practical guidance for APOE4 carriers
A new genetic result. Conflicting advice. A blood test you want to understand. Find clear explanations of APOE4 research, practical guides and questions to take to your doctor.
Just found out, or starting over?
Understand what APOE4 means, then work through the basics of food, movement, sleep and supplements. The free Essential Guide brings them together in one place, with sources to explore and discuss with your doctor.
The questions that matter to you
Explore what the research says about food, sleep, exercise, bloodwork and life with APOE4. Choose a topic, or search for the question you came with.
APOE4 does not cause Alzheimer's alone. It raises risk, and research points to five routes: amyloid, tau, immune cells, cholesterol and blood vessels.
APOE2, APOE3 and APOE4 compared: how common each is, what each does to Alzheimer's risk and LDL cholesterol, and what your genotype pair means.
In the US, an estimated 20 to 30 in 100 people carry APOE4 and about 2 in 100 carry two copies. Frequency differs by ancestry. Here are the sources.
APOE4 is inherited: you get one APOE copy from each parent. What a parent with one or two copies passes on, what it raises, and what it does not decide.
Eggs were not linked to dementia or Alzheimer's in a 22-year study of 2,497 men, APOE4 carriers included. What it means for your LDL, and how to check.

You should not have to break the tie. A neurologist explains how she handles conflicting hormone advice.
Why every new carrier makes this better for you
Your labs, your plan, your supplements, your pod. And the old price, for 5 more days.

The fear was real. So was the decision to act.
Written by Dr. Kevin Tran, Doctor of Pharmacy

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Evidence-based biomarker targets your doctor doesn't know about.
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What to do with your raw DNA data—SNP by SNP.
Get the free guideResearch explainers and conversations about the choices APOE4 carriers face, from bloodwork and brain health to everyday habits.
The Phoenix Community
Phoenix, the publisher of Field Notes, is an app and community for APOE4 carriers. Build your personal protocol, understand your bloodwork and find support to keep going.