Principle: Downward causation · Upward constraint
The Cascade Engine
Chapters 2, 5, 6, 8, 13, 14, 18 and 24Choose a condition of life. Watch where it starts and how it travels through the other kingdoms. The same architecture carries the wholesome and the corrosive, and every step shows how far the evidence reaches.
Lonely people attend more to signs of social threat, which makes withdrawal more likely and can close the loop.
What matters for loneliness is feeling cut off, not the number of people nearby.
Over four years, the loneliest people's systolic blood pressure rose 14.4 mm Hg more than that of the least lonely.
Loneliness is linked to more broken, less efficient sleep.
Lonely people show an inflammatory, low-antiviral pattern of gene activity in their white blood cells.
Prolonged stress that cannot be controlled produces passivity. Its discoverers now argue that passivity is the default, and what is learned is control.
In the Whitehall studies of British civil servants, each step down the grade ladder brought worse health, even after lifestyle was accounted for.
Chronic social conditions such as insecure work and unstable housing predict allostatic load: wear across the cardiovascular, metabolic and immune systems together.
In stable primate hierarchies, subordinate animals carry higher baseline cortisol; when the hierarchy is contested, dominant animals fare worse.
Scarcity may tax attention and self-control. The original study's analysis has been challenged, and how large any effect is remains disputed.
That wear is measured in cortisol, adrenaline and inflammatory markers such as C-reactive protein and IL-6.
The narrator that tells a lonely mind it is unsafe tells a connected mind that it belongs; either story shapes the body.
Health tracks the quality of a person's social embedding at every level, from family to nation.
People with six or more kinds of social tie were about four times less likely to develop a cold after deliberate exposure to the virus than people with one to three.
Weak social ties carry a mortality risk comparable to well-known risk factors such as smoking.
Social support during a stressful task lowers the cortisol response to it.
Studies suggest power can reduce perspective-taking, but a large replication of the best-known experiment found no effect.
Secure rank brings lower baseline cortisol and faster recovery from stress, but only while the hierarchy holds.
Across primates, posture reflects social rank. Claims that adopting a powerful posture changes hormones have failed to replicate.
The narrator learns early what to expect from other people and keeps telling that story long after.
A parent's own attachment pattern matches the infant's, secure or insecure, in about three cases out of four.
Whether early care calibrates the human stress-response system for life is still debated.
In rats, a mother's licking and grooming changes the chemical marking of her pups' stress-hormone receptor gene and sets their stress response for life.
What you found
Tracing a condition as one cascade through four kingdoms is the book's synthesis; each step comes from separate research.
Further in the book
Chapter 6, When the Foundation Shakes, maps a dozen conditions this way. Chapter 26, Downward Corruption, Upward Betrayal, shows the kingdoms turning on one another.
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