About

Signal Cascade is a notebook about the chemistry that runs a human day. The articles here walk through the molecular machinery of ordinary life — the hormones that pace the morning, the neurotransmitters that carry a thought, the slow mitochondrial arithmetic that turns breakfast into motion — and try to say it plainly.

What we cover

• Hormones and signaling — cortisol rhythms, oxytocin bonds, and the feedback loops that keep them honest
• Neural chemistry — dopamine, serotonin, and what the signals actually do
• Energy metabolism — mitochondria, ATP, and the economics of being warm-blooded
• Recovery and repair — inflammation, tissue turnover, and what happens while you sleep

How we write

Every note starts in the primary literature — review papers and physiology references — and gets rewritten until a curious reader with no laboratory background can follow it. When the evidence is thin, we say so. When a claim is popular but wrong, we say that too.

Nothing here is medical advice. It is chemistry with the jargon removed, written for people who like knowing how things work.