Allostatic load
Written by AI (Claude) from Gabo's prompts, then reviewed by him — a reference he keeps, not medical advice.
Allostasis is how the body stays stable by changing — heart rate, cortisol, blood sugar all move to meet the moment. Allostatic load is the bill for running that machinery too hard, too often, without letting it switch off. Think of it as a battery of wear-and-tear. Stress charges it; recovery drains it. Trouble starts when it never gets to empty.
What fills it
- Stressors stacked back to back, with no gap to recover.
- Poor or too little sleep.
- Money, work and relationship strain that never lets up.
- Loneliness and lost social support.
- Alcohol, nicotine, junk food, a sedentary body.
- Rumination — replaying the threat long after it is gone.
- Old wounds: childhood adversity leaves the system primed.
What frees it
- Real sleep — the deepest reset there is.
- Movement you can talk through: walks, easy cycling, swimming.
- Time outdoors — 20–30 minutes in green, a few times a week.
- People you trust, and time with them.
- Slow breathing, meditation, a genuine day off.
- Fewer inputs: less booze, caffeine, doom-scrolling.
- Naming the thing — writing or talking it out beats stewing.
- Your treatment counts: therapy, meds as prescribed, kept appointments.
Signs the load is full
- Sleep breaks down — wired at night, wrecked in the morning.
- A short fuse, or feeling flat and switched off.
- Getting sick often; small wounds that heal slowly.
- Gut trouble, appetite swings, weight settling at the middle.
- Blood pressure, resting heart rate or blood sugar creeping up.
- Foggy thinking, poor focus, a memory that slips.
- Small things land like big ones — no reserve left.
Four ways stress turns into damage
McEwen's point: it is not stress itself that harms you, but the response failing to behave. Four patterns do the wearing.
- Too many hits. One stressor after another, faster than you recover.
- No habituation. The same stressor keeps hitting as hard as the first time — you never get used to it.
- No off switch. The alarm stays on after the threat has passed.
- A weak response. One system underreacts, so others overwork to cover — a flat cortisol curve, say, lets inflammation run.
If you're being treated for depression
Depression and a full load run in a loop. Chronic stress helps tip you in; depression then keeps the same stress system switched on. The wear feeds both.
So read the checklist gently. Its signs — flat mood, broken sleep, fog, no reserve — are also depression's signs, almost one for one. A rough patch here does not by itself mean the load is the culprit, or that you're relapsing. Take it as a nudge to rest and to tell your therapist or doctor, not as a verdict.
And the recovery list is hardest exactly when you need it most — the illness steals the drive to move, sleep and see people. Lower the bar. A ten-minute walk, one message to a friend, one early night. Small doses still drain the battery, and your treatment belongs on that list, not beside it.
Sources
- McEwen & Stellar (1993), Stress and the Individual — the paper that named the idea.
- McEwen (1998), Protective and Damaging Effects of Stress Mediators, NEJM — the mechanisms above.
- Juster, McEwen & Lupien (2010), Allostatic load biomarkers of chronic stress — how it is measured.
- Allostatic load on Wikipedia — a solid overview with further reading.