APOE

Advanced wellness

also apolipoprotein e genotype, ε2/ε3/ε4

What it isA gene with three common alleles (ε2, ε3, ε4) encoding the apolipoprotein E protein, which traffics cholesterol in blood and brain. Genotype is the strongest common genetic risk factor for late-onset Alzheimer's disease and modulates cardiovascular and lipid biology.

DoesDetermines cholesterol clearance efficiency in liver and brain; affects amyloid-beta clearance and neuronal lipid handling.

Goodε2/ε3 or ε3/ε3 carries average or below-average dementia risk and standard cardiovascular biology.

BadA single ε4 copy roughly triples late-onset Alzheimer's risk; two copies raise it roughly tenfold and shift onset earlier. ε4 also amplifies cardiovascular risk from saturated fat and head injury.

Standard

Genotype reported as ε2/ε3/ε4 combinations.

Optimal

No widely-accepted optimal — the genotype is fixed; the goal is aggressive risk-factor control especially in ε4 carriers.

Modifiers

One-time test; genotype does not change.

How to optimize

Lifestyle: Aggressive control of cardiovascular risk factors, regular Zone 2 and strength training, prioritized sleep (7–9 hours), avoidance of head injury, hearing aids if needed, social and cognitive engagement — all more important for ε4 carriers.
Diet: Mediterranean or MIND pattern; ε4 carriers benefit from tighter saturated fat restriction and emphasis on monounsaturated and omega-3 fats.
Supplements: Omega-3 EPA+DHA 2–4 g/day, vitamin D3 if deficient, creatine, B-vitamins if homocysteine elevated.
Peptides: Cerebrolysin, Semax, and other neurotrophic peptides under investigation; no definitive evidence for prevention.
Drugs: Aggressive lipid lowering (statin, ezetimibe) and blood pressure control in ε4 carriers; lecanemab and donanemab now available for early symptomatic Alzheimer's but with higher ARIA risk in ε4 homozygotes.

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