Is Your Body Stuck in Survival Mode?

You got sick, or went through a stressful stretch, or were exposed to something toxic, and somehow you never fully bounced back. Your energy is low, your body reacts to things it used to tolerate, and supplements that should help sometimes make you feel worse. It can feel as if your body has forgotten how to heal. In many cases it hasn’t forgotten. It has switched into a protective survival mode, called the cell danger response, and never switched back out. Your mitochondria sit at the centre of that switch.

Your mitochondria are security guards, not just power plants

Mitochondria are usually described as the power plants of your cells, and making energy is one of their jobs. But they also act as the cell’s security guards. They constantly monitor oxygen, nutrients, acidity, temperature, toxins and signs of infection, and when something threatens the cell, they are often the first to notice and the first to respond.¹

That makes sense when you consider how deeply they’re woven into the cell. More than a thousand genes are needed to build and run your mitochondria, and only 13 of them sit in the mitochondria’s own DNA. The rest are in the main DNA of the cell.² Mitochondria aren’t a separate engine bolted onto the cell. They are part of its control system.

When a healthy cell’s mitochondria are working well, they release small amounts of ATP and other metabolites that signal to neighbouring cells that all is well. When they sense danger, that signal changes.¹

What the cell danger response is

When mitochondria detect a threat, such as a virus, bacteria, toxins, heavy metals or physical injury, they deliberately change how the cell runs. This coordinated shift is the cell danger response.¹ It does several things at once:

• Energy production is turned down. The mitochondria step back from full-power energy production and the cell leans on glycolysis, the fast route outside the mitochondria. A cell running at full power is easier for a virus to hijack and more vulnerable to free radical damage.
• The cell stiffens its defences. Membranes become less permeable, and the cell takes in and releases less, to limit the spread of whatever has invaded.
• Danger signals go out. Cells release ATP outside themselves, where it acts as an alarm signal, telling neighbouring cells and the immune system that there is a threat.
• Free radicals are used as weapons. Immune cells make free radicals deliberately to kill microbes, and mitochondria sense the rising oxidative stress and turn their own energy production down so they don’t add to it.

Mitochondria also help detect viruses directly. A protein on their surface recognises viral genetic material and switches on the cell’s antiviral defences.³

All of this is helpful in the short term. The cost is that the cell is running in defence mode, not growth-and-repair mode, and you feel it as fatigue, sensitivity and slow recovery.

The three stages of the healing cycle

The cell danger response isn’t meant to be permanent. It’s the first stage of a healing cycle, and once the threat has passed, the cell is meant to move through two more stages before returning to normal.⁴

1. Alarm and defence. The threat is detected, energy production shifts towards glycolysis, inflammation rises, and the immune system clears the invader or the damage.
2. Clean-up and rebuild. Damaged cells are cleared away and new cells are made to replace them. This stage needs a lot of building materials and runs on a growth-focused metabolism.
3. Reconnect and restore. The new cells mature into their specialised roles, mitochondria return to full energy production, and cells and tissues reconnect and communicate normally again.

Each stage needs the one before it to finish. Chronic illness, in this model, is what happens when the healing cycle gets stuck. The original trigger may be long gone, but the signals that keep a stage running haven’t switched off. More than a hundred chronic conditions can be grouped by which stage the body appears stuck in.⁴

That reframes the question. Rather than asking only “what caused this?”, it asks “what is keeping the body in this stage, and what does it need to move forward?”. If you’d like to work out where your own healing may be stuck, I’ve written about it in why am I not getting better?

How mitochondria change shape under stress

Healthy mitochondria often form long, connected networks inside the cell. They constantly join together and split apart, which lets them share resources and isolate damaged parts. Under stress, they split into smaller, rounder pieces.⁵ That fragmentation lets the cell separate out damaged mitochondria and recycle them. When stress is severe or prolonged, it’s also an early step on the path towards the cell deliberately shutting itself down.

When cells die from injury, they release fragments of mitochondria, including mitochondrial DNA, into the blood. Because mitochondria originally evolved from bacteria, your immune system reads these fragments much as it would read an infection, and they trigger inflammation.⁶˒⁷ So ongoing cell damage can keep the alarm sounding even when there’s no infection left.

Why repair needs working mitochondria

Even when energy production is turned down, the mitochondria aren’t idle. The cell needs them to stay charged and connected to keep receiving supplies and to build new materials. One example: making the building blocks of new DNA and RNA depends on an enzyme that sits in the mitochondria’s inner membrane and is linked to their energy chain. If the mitochondria are too shut down, repair slows too.

This is why recovery has to happen in order. The threat needs to be dealt with before the mitochondria can safely power back up, and they need to power back up before full repair can happen.

What keeps the alarm switched on

The alarm stays on as long as the cell keeps sensing danger. Common triggers include:

• Lingering infections, including viral and gut infections
• Mould exposure and mycotoxins
• Heavy metals and persistent environmental pollutants
• Alcohol and acetaldehyde, including acetaldehyde made by yeast in the gut (see what happens to your cells when you drink alcohol)
• A steady overload of sugar and food that drowns the mitochondria
• Hydrogen sulphide from gut bacteria, which directly blocks part of the mitochondrial energy chain (see sulfur sensitivities)
• Nutrient shortfalls the mitochondria depend on
• Some medications and recreational drugs
• Ongoing psychological stress

That last one surprises people, but it works both ways. Your stress hormones are partly made inside the mitochondria: the first and last steps of making cortisol both happen there. And when mitochondrial function was impaired in different ways in mice, each defect changed the whole-body response to stress, including stress hormones, adrenaline and inflammation.⁸ Mitochondria shape how you respond to stress, and stress shapes how your mitochondria behave.

Why supplements can make you feel worse

This is one of the most important practical consequences, and it’s something I see regularly in clinic.

When an organic acid test shows signs of strained mitochondria, the natural instinct is to give mitochondrial nutrients to push energy production back up. But if the mitochondria have slowed down on purpose because the cell still senses danger, pushing them harder works against that protection. In my clinical experience, people who are still in active defence mode often feel worse, not better, on mitochondrial support. The better question is what’s keeping them there. I’ve written more about this in why the right supplements can make you feel worse, and about reading these markers in context in what an organic acid test can tell you.

Antioxidants can be a similar story. Your immune cells rely on a molecule called NADPH to make the free radicals they use to kill microbes, and the same NADPH supply is used to recycle glutathione, your main antioxidant.⁹ During an active infection, the body prioritises defence. In my clinical experience, some people with chronic infections feel worse on high-dose antioxidants, possibly because they’re working against the immune response rather than supporting it. This is my interpretation, not something that has been tested directly.

Methylation during the danger response

Here’s another connection I find useful clinically, and this is my interpretation of the biochemistry. The rebuilding stage needs compounds called polyamines to make new cells, and making polyamines uses up SAMe, the same molecule your body uses for methylation. When a lot of SAMe is diverted to rebuilding, less is available for methylation jobs such as making the phospholipids that keep cell membranes flexible. So methylation markers may look poor during a danger response and improve once the body moves through the cycle, which is a reason to interpret them in context rather than treat them in isolation.

Getting out of survival mode

The research behind this model has focused on the ATP alarm signals that keep the cell danger response running. In one small trial, ten boys with autism were given either a single low-dose infusion of suramin, an old drug that blocks those ATP receptors, or a placebo. Over the following weeks, the suramin group showed improvements in language and social behaviour, while the placebo group didn’t change.¹⁰ It’s an early, very small study of a prescription drug with significant toxicity at higher doses, so it’s not a treatment option. But it supports the idea that the alarm signals themselves, not only the original trigger, keep the body stuck.

In practice, moving out of survival mode usually means:

• Finding and reducing the threat: infections, mould, toxins, gut problems and food or alcohol overload.
• Not forcing energy production while the alarm is still on.
• Supplying what each stage needs, in the right order, once the threat is reduced.
• Calming the stress response, because psychological stress feeds the same loop.
• Being patient with the order of recovery. Markers and symptoms often shift unevenly as the body moves from one stage to the next.

For the bigger picture of what happens when mitochondria slow down, see what mitochondrial dysfunction actually means.

Frequently asked questions

What is the cell danger response?
The cell danger response is a coordinated protective shift that cells make when their mitochondria sense a threat such as infection, toxins or injury. Energy production is turned down, defences are raised, and alarm signals are sent to neighbouring cells and the immune system.

What are the three stages of the healing cycle?
The first stage is alarm and defence, where the threat is fought off. The second is clean-up and rebuild, where damaged cells are replaced. The third is reconnect and restore, where new cells mature, mitochondria return to full energy production and tissues communicate normally again.

Why am I not recovering after an illness?
One explanation is that the healing cycle has stalled at one of its stages. The original trigger may be gone, but the alarm signals keeping that stage running haven’t switched off, so the body stays in a protective, low-energy state.

Why do mitochondrial supplements sometimes make me feel worse?
If your mitochondria have slowed down on purpose because your cells still sense danger, pushing energy production harder can work against that protection. Reducing what’s keeping the alarm on usually needs to come first.

Can stress affect my mitochondria?
Yes. Mitochondria help make stress hormones, and how well they’re working shapes the body’s stress hormone, adrenaline and inflammatory response. Ongoing stress can help keep the body in a protective state.

Is suramin a treatment for the cell danger response?
No. Suramin has only been tested in one very small trial and is a prescription drug with significant toxicity at higher doses. It’s of research interest because it supports the idea that alarm signals keep the body stuck.