70% less dementia. The statin data APOE4 carriers need to see
Dr. Fraser breaks down ApoB targets by genotype, the statin rotation strategy, and the one test most carriers skip.

Key takeaways · TL;DR
APOE4 carriers benefit more from statins than non-carriers, with Mendelian randomization showing 70% dementia reduction. Dr. Fraser recommends genotype-specific ApoB targets — as low as the teens for 4/4 carriers with high Lp(a) and vascular disease — rather than standard LDL-C panels.
Definition
A protein on every atherogenic lipoprotein particle, serving as a direct count of particles driving cardiovascular disease.
Definition
A research method using natural genetic variants as proxies for exposures to establish causal relationships without confounding.
ApoB Targets by APOE Genotype
| Genotype | ApoB Target | Adjustment |
|---|---|---|
| APOE 3/3 | ~70 mg/dL | Baseline |
| APOE 3/4 | ~60 mg/dL | -10 |
| APOE 4/4 | ~55 mg/dL | -15 |
| 4/4 + Lp(a)+ | ~35 mg/dL | -35 |
| 4/4 + Lp(a)+ + vasc | ~15 mg/dL | -55 |
- [1]Genetic proxies for statins and dementia riskPubMed ↗


