Why It Works: The Healing Cycle

Every page on this site is a step. This page is why the steps come in this order.

The model

A mitochondrial researcher at the University of California San Diego, Robert Naviaux, describes chronic illness as a normal healing response that got stuck. Every infection, injury or toxin switches a cell’s metabolism into a defensive program he calls the cell danger response. Healing is meant to move through that program in stages and come out the other side. Chronic illness, in his model, is what happens when cells stay parked partway through, still defending against a threat that has passed. It is a theory, and he says himself that the details are provisional. I find it the most useful frame I have for what I see in people, and for why this protocol is built the way it is.

The stages, in plain words

First, inflammation: the cell locks down, fights, and cleans up. Second, proliferation: the tissue rebuilds its numbers. Third, differentiation: the new cells settle, specialise, and reconnect with their neighbours, their nerves and their hormones. Then normal life. Each gate opens only when the cell’s own energy is ready and the signals around it say the danger is over. Cells cannot skip a stage, and a cell stuck at a gate keeps acting sick long after the trigger is gone.

What stuck looks like

Fatigue that does not lift with rest. Brain fog. A low waking temperature, cold hands and feet, and no tolerance for heat. Poor sleep, a flat appetite, a nervous system that cannot come down. In the model, cells in the stuck state also stop listening to the body’s own signals, which is why blood tests can look normal while the person feels none of what those tests measure. The signs that the cycle is moving again are the opposite: warmth coming back, heat tolerance returning, deeper sleep, a real appetite, and a body that suddenly uses food, supplements and medicine better than before.

How the protocol walks the cycle

Prepare. Lower the danger load first. The fewer alarms your body is already answering (a loaded gut, drugs to clear, a known deficiency), the further the fast can carry you.

Fast. The dry fast is a short, deliberate stress. It clears blockages, strips out damaged cells and mitochondria, resets the energy state of the cell and pushes it toward the healthy state. Deeper fasts go deeper and may bring results faster, but they demand a stricter refeed and more care, and how far you go is set with me. Five days dry is the cap at home.

Refeed. The most vulnerable stage of the whole cycle. For about two weeks the new cells are settling and reconnecting, and the refeed has to cultivate that state rather than shock it. Too much food too fast, a protein or insulin spike, an infection, a cold room, broken sleep, a stressful week: any fresh danger signal can lock the cells straight back into the stuck state. Every rule on the refeed page exists to keep that signal off.

Restore. The metabolism comes back only when the body stops sensing danger. That means calories, warmth, carbohydrate, the between-fasts stack, and, for the person who stays cold and exhausted after the refeed, a short T3 course.

Rebuild. hGH belongs to the last stage of the cycle, which is why it waits until two full cycles have cleared the way.

The two turning points of the fast

In my experience the dry fast has two turning points. Day three is the first acidotic crisis, the metabolic commitment where the body switches gears and the nervous system flips from panic to calm. The second comes around days seven to nine, and it is where the deeper acidification does its most aggressive work: it melts biofilms, the protective shells that shelter Lyme co-infections and other stubborn pathogens from the immune system. That second window is not for the newly initiated and it is never a home fast. It is my experience, not a measured fact, and I say so.

Why the healthier you are, the more the fast gives

A stronger metabolism gets more from the fast. The healthier you are, the more healing your body is capable of, because the system needs a lot of moving parts to work: fat burning, immune mobilisation, autophagy, rebuilding. That is also why the coldest, most damaged people respond so well to the whole sequence: they have the most to regain, and the fast, the refeed, the calories and T3 together give it back. A sick person should expect more fasts than a healthy person, with more careful refeeds and more careful preparation.

Where T3 fits

Not everyone needs T3. It is for the person who comes out of the fast and the refeed still cold, with whole-body and brain fatigue that does not lift. For them the 30-day course is a reboot: it brings the metabolism up to speed, lets the body use the calories, and then hands the job back to your own thyroid. Some people do better on a milder mix of T4 and T3; which, and how much, is set case by case. If the course does little, that is an answer too: wean off rather than climb.

Fasting and the bioenergetic view

The school of thought I follow on metabolism warns against fasting of any kind, because it reads every stressor as anti-metabolic. My experience is that the two belong together: fast rarely, as a short sharp stress that breaks the stuck state, then feed, warm and bring carbohydrate back to keep it broken. The fast opens the door. Food and warmth keep it open.

What the evidence says

Marked caveat: the healing cycle is a theory paper from one researcher. It has no patients in it and no trial behind it, and its author writes that only good clinical trials will tell whether it is true. It says nothing about dry fasting, multi-day fasting or refeeding; the only fasting it endorses is occasional short fasts, and it cautions against prolonged calorie restriction and against long-term hormone treatment, which it says can bring side effects and dependence. The one drug built on the model, suramin, helped a few children for weeks in a pilot and missed its main goal in a larger trial. Mapping the fast and the refeed onto the stages is my synthesis, not his claim. What is measured in people: inflammation markers rise during long fasts and settle after a careful refeed, and immune signals have been measured rising four days into a refeed, which is why I treat those days the way I do.

Further reading

Preparation, The Dry Fast, The Refeed, T3 Therapy, hGH Therapy, Between Fasts, the Metabolism Repair Plan.

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References

  1. Naviaux RK. Metabolic features and regulation of the healing cycle: A new model for chronic disease pathogenesis and treatment. Mitochondrion, 2019;46:278-297. PMID 30099222. DOI 10.1016/j.mito.2018.08.001.the model this page uses: a theory and review paper by one author, with no patients and no trial; he calls the details provisional, and the only fasting it mentions is occasional short fasts
  2. Commissati S, Cagigas ML, Masedunskas A, et al. Prolonged fasting promotes systemic inflammation and platelet activation in humans: A medically supervised, water-only fasting and refeeding study. Mol Metab, 2025;96:102152. PMID 40268190. DOI 10.1016/j.molmet.2025.102152.a supervised water-only fast and guided refeed in middle-aged volunteers: CRP and other inflammation markers rose during the fast and settled back to baseline after the refeed; single arm, no control group, water fasting rather than dry
  3. Fazeli PK, Zhang Y, O'Keefe J, Pesaresi T, Lun M, Lawney B, Steinhauser ML. Prolonged fasting drives a program of metabolic inflammation in human adipose tissue. Mol Metab, 2020;42:101082. PMID 32992039. DOI 10.1016/j.molmet.2020.101082.serial fat biopsies through an inpatient water-only fast in healthy volunteers: an immune and inflammation response switched on in fat tissue, inflammation markers rose in the blood, and CRP had not come down the day after refeeding; a small study with no control group
  4. de Ciutiis I, Djakovic S, Cagigas ML, Masedunskas A, Smith L, Franceschi C, Fontana L. Long-term fasting and its influence on inflammatory biomarkers: A comprehensive scoping review. Ageing Res Rev, 2025;110:102797. PMID 40484176. DOI 10.1016/j.arr.2025.102797.a scoping review of human studies of prolonged fasting: inflammation markers mostly rose or did not change during the fast, and settled after refeeding in several studies; the authors call the evidence limited and inconsistent
  5. Mesnage R, Grundler F, Schwiertz A, Le Maho Y, Wilhelmi de Toledo F. Changes in human gut microbiota composition are linked to the energy metabolic switch during 10 d of Buchinger fasting. J Nutr Sci, 2019;8:e36. PMID 31798864. DOI 10.1017/jns.2019.33.healthy men on a modified Buchinger fast with small daily calories: inflammatory cytokines did not rise significantly during the fast and rose significantly above baseline four days into the refeed; one refeed time point, no control group

See the full research & citations page for the complete evidence base and how each study is used.

The information on this site describes a personal health protocol and is provided for educational purposes only. It is not medical advice. Consult a qualified physician before modifying your diet, fasting practice, or any medication regimen.