The KillSwitches and Their Rescue

Parthanatos and Ferroptosis: the "death pathways" ApoE4 carriers are primed for-and the DHA-derived signal that intercepts it.

The Kill Switch(es): Three Death Pathways, Three Rescues, One Missing Substrate

The Vortex showed the fork.

The Vortex: APOE4 Hyperexcitability and Membrane Lipid Biology

The Drain showed the supply failure — and the hallway that consumes what gets through.

The Drain: DHA's Journey and Three Places It Gets Lost

The Engine showed the self-reinforcing loop that strips DHA from the membrane over decades.

How APOE4 Neurons Burn Through Their Own Membranes

The KillSwitches article you are about to read is where the loop ends. Not because it stops running, but because the neuron finally runs out of ways to survive. Please refer to the diagrams below as I walk you through them.

The first diagram below maps Kill Switches 1 and 2 — apoptosis and ferroptosis — and the membrane decision that determines whether their rescue pathways can function. The second diagram maps Kill Switch 3 — parthanatos — and the NAD⁺ collapse that connects it to the first two. The third diagram maps how (*I believe*) my supplement stack addresses all three.

The KillSwitches is the most mechanistically dense article in the series. It is designed to be returned to, not absorbed in a single reading. Much of this content will be unpacked in future installments, including an important article referenced here, called “The Narrowing Margin”. Please do not get overwhelmed by the length and density of this information, and do not be afraid to ask questions! And if you are used to The NeuroLipid Notebook by now, expect me to attempt to turn this into a rap for your listening pleasure in the near future! Lastly, I have also created a lay-person guide to this article, which uses metaphor and fun diagrams to illustrate the key points.