{"id":1243,"date":"2026-09-04T07:43:50","date_gmt":"2026-09-04T07:43:50","guid":{"rendered":"https:\/\/valerieocallaghan.com\/?p=1243"},"modified":"2026-09-04T07:45:20","modified_gmt":"2026-09-04T07:45:20","slug":"neurodivergent-exhaustion-and-mitochondria-what-the-evidence-says-and-where-the-leap-begins","status":"publish","type":"post","link":"https:\/\/valerieocallaghan.com\/en\/agotamiento-neurodivergente-y-mitocondrias-que-dice-la-evidencia-y-donde-empieza-el-salto\/","title":{"rendered":"Neurodivergent exhaustion and mitochondria: what the evidence says and where the leap begins"},"content":{"rendered":"

Val\u00e9rie-Anne O'Callaghan<\/em><\/p>\n\n\n\n

A claim that has been shared tens of thousands of times is circulating these days: neurodivergent burnout is a cellular rather than a psychological phenomenon, and mitochondrial science explains why the usual recovery advice fails with autistic and ADHD individuals.<\/p>\n\n\n\n

The statement has a grain of truth, a plausible element, and a considerable leap. It's worth separating these elements, because those experiencing this burnout have been demanding for years that it be taken seriously, and an explanation that collapses at the first scrutiny leaves them worse off than before.<\/p>\n\n\n\n

What is autistic exhaustion?<\/strong><\/p>\n\n\n\n

Let's start with what is best documented, which is experience.<\/p>\n\n\n\n

Raymaker and collaborators (2020) published in Autism in Adulthood<\/em> The first academic work to define the phenomenon was based on interviews with autistic adults and publicly available online sources. Its definition: a syndrome resulting from chronic life stress and a mismatch between expectations and abilities without adequate support, characterized by persistent and prolonged exhaustion, usually lasting more than three months, loss of function, and reduced tolerance to stimuli.<\/p>\n\n\n\n

Three characteristics, then: exhaustion that rest does not repair, loss of previously available skills, and a narrowing sensory threshold. Subsequent research added social withdrawal and an increase in autistic traits during the episode.<\/p>\n\n\n\n

It is worth noting something that the literature itself acknowledges: autistic exhaustion is not yet listed as a diagnosis in clinical manuals. It exists as a research construct, largely developed within the autistic community, and supported by a growing body of qualitative studies.<\/p>\n\n\n\n

What is documented about mitochondria<\/strong><\/p>\n\n\n\n

This is where the viral claim gets its material, and where it's important to be accurate.<\/p>\n\n\n\n

Mitochondrial dysfunction in autism has been studied since the 1980s. Rossignol and Frye (2012) published in Molecular Psychiatry<\/em> A systematic review and meta-analysis that remains a benchmark: the prevalence of diagnosed mitochondrial disease in the autistic population was around 51%, compared to approximately 0.011% in the general population. A huge difference, and yet still a minority.<\/p>\n\n\n\n

The picture changes when biomarkers are considered instead of formal diagnoses. Frye et al. (2024) reviewed 204 articles and found significant elevations in lactate at 17% in cases, pyruvate at 41%, alanine at 15%, and creatine kinase at 9%. Other studies have estimated that autistic individuals between 30% and 50% exhibit some marker of altered mitochondrial function, and assays in buccal epithelial cells have shown reduced activity in some respiratory chain complexes around 40% in the autistic children studied.<\/p>\n\n\n\n

In ADHD, the evidence is scarcer and more recent. Reviews from 2026 describe alterations in ATP production and mitochondrial dynamics, with the explicit caveat that the findings are limited and fragmented across disciplines.<\/p>\n\n\n\n

A key finding from Rossignol and Frye: in 79% cases of autism with mitochondrial disease, no genetic abnormalities were found to explain it. This suggests a secondary mitochondrial dysfunction, that is, an acquired dysfunction, and therefore potentially modifiable.<\/p>\n\n\n\n

The cellular danger response<\/strong><\/p>\n\n\n\n

The other pillar of the claim comes from Robert Naviaux, of the University of California, San Diego.<\/p>\n\n\n\n

Naviaux (2014) proposed the cellular danger response: when a cell detects a threat, whether infection, toxin, physical trauma, or metabolic stress, the mitochondria reduce their oxygen consumption, harden the cell membrane, and release ATP to the exterior as an alarm signal to neighboring cells. It is an ancient and coordinated defensive mechanism.<\/p>\n\n\n\n

His most cited work in this field is the one from 2016 in PNAS<\/em>, In his work, he identified twenty altered metabolic pathways in people with chronic fatigue syndrome and described a hypometabolic state comparable to the biological dormancy that other species activate under adverse conditions. His formulation is precise and worth preserving: mitochondria are not broken. They are deliberately slowed down.<\/p>\n\n\n\n

Naviaux (2019) later developed the idea of the healing cycle in Mitochondrion<\/em>When the danger response is activated persistently or repeatedly, healing is incomplete and chronic disease appears.<\/p>\n\n\n\n

This framework explains well why rest alone does not repair certain types of exhaustion. An organism that has deliberately reduced its energy production needs a signal that the threat has passed, and more sleep does not always provide that signal.<\/p>\n\n\n\n

Where is the jump?<\/strong><\/p>\n\n\n\n

At this point, the argument seems complete. And the central piece is missing.<\/p>\n\n\n\n

To the best of the published literature, no study has measured mitochondrial markers in autistic individuals during an episode of autistic exhaustion and compared them with periods of normal functioning. Mitochondrial dysfunction is documented in a subgroup of autistic individuals. The cellular danger response is described in chronic fatigue. Combining these two factors to explain autistic exhaustion is a reasonable hypothesis, and it remains a hypothesis.<\/p>\n\n\n\n

It is advisable to add three precautions.<\/p>\n\n\n\n

First, the percentages refer to subgroups, and often to children with presentations that include regression, epilepsy, or digestive disorders. Extending them to the entire autistic and adult ADHD population goes beyond what the data allows.<\/p>\n\n\n\n

Second: the cellular danger response has uneven acceptance in the scientific community. It is an influential theoretical framework and is still under discussion, with active research surrounding it.<\/p>\n\n\n\n

Third: even where mitochondrial dysfunction is documented, its causal direction is rarely clear. Chronic stress, sustained inflammation, and sleep deprivation all disrupt mitochondrial function. An organism that has spent years masking itself in environments that are not suited to it has ample reason to exhibit metabolic alterations, and these alterations can be both a consequence and a cause.<\/p>\n\n\n\n

The problem with the sentence itself<\/strong><\/p>\n\n\n\n

And we come to what interests me most, which is the formulation.<\/p>\n\n\n\n

To say that neurodivergent exhaustion belongs to the cellular rather than the psychological realm is to reproduce precisely the dualism that research over the last few decades has been dismantling. The psychological occurs in a body. Chronic stress modifies gene expression, the hypothalamic-pituitary-adrenal axis, immune function, and cellular metabolism. McEwen (1998) described this accumulation as allostatic load: the cost paid by an organism that relentlessly compensates.<\/p>\n\n\n\n

When someone claims their exhaustion is biological, what they're usually saying is something else entirely, and that something else is perfectly legitimate: that it's not laziness, it's not a lack of willpower, and it can't be solved with attitude alone. They're absolutely right. The mistake lies in believing that to maintain this, one must exclude the psychological aspect from the picture, when the psychological is also biological.<\/p>\n\n\n\n

That's where I see the real risk of these kinds of headlines. A framework that promises a complete explanation from the cellular level can lead someone to seek out supplements and metabolic protocols while leaving untouched what's exhausting them: a job that requires masking eight hours a day, a sensory environment they can't tolerate, support systems that simply don't exist. And that part, the environment, is what Raymaker identified as the origin.<\/p>\n\n\n\n

What holds up, in practice<\/strong><\/p>\n\n\n\n

What can be stated with the available evidence is sufficient to change the approach to recovery.<\/p>\n\n\n\n

Autistic burnout exists, has its own characteristics, and is distinct from classic burnout and depression. A significant subgroup of autistic individuals exhibits markers of altered mitochondrial function, and this finding warrants individual clinical evaluation when there is disproportionate fatigue, exercise intolerance, or persistent digestive symptoms. Passive rest is rarely sufficient because the problem is not solely about sleep duration. And the factor that qualitative research repeatedly points to is the sustained mismatch between environmental demands and available capabilities, without support.<\/p>\n\n\n\n

In practical terms, this aims to reduce the burden rather than add interventions. Less masking, tolerable sensory environments, adjusted demands, and a pace that doesn't force the next day's reserves to be used up each day. Ali et al. (2025) reviewed 48 studies on recovery and found one factor that appears consistently: having the conceptual framework, that is, knowing what is happening and being able to name it.<\/p>\n\n\n\n

What we owe to those who experience it<\/strong><\/p>\n\n\n\n

A person experiencing autistic exhaustion has likely spent years hearing that they're exaggerating, that they should get more organized, that they should go out more. The temptation to cling to a compelling cellular explanation is understandable: it seems to restore legitimacy.<\/p>\n\n\n\n

The legitimacy is already established. Raymaker's description was developed using autistic individuals and describes a real phenomenon, with or without a biomarker to confirm it. Claiming more than the evidence supports ultimately backfires, because the day someone carefully examines the sources, the distrust will extend to even the solid evidence.<\/p>\n\n\n\n

Clearly explain what we know, honestly point out what is still a hypothesis, and act on what we can change. In a field where so many people have been disbelieved for years, precision is a form of respect.<\/p>\n\n\n\n

Sources and references<\/strong><\/p>\n\n\n\n

Ali, D., et al. (2025). Review of 48 studies on autistic exhaustion and recovery factors.<\/p>\n\n\n\n

Frye, R.E., et al. (2024). Biomarkers of mitochondrial dysfunction in autism spectrum disorder: A systematic review and meta-analysis. Research in Developmental Disabilities<\/em>. Review of 204 articles.<\/p>\n\n\n\n

Griffiths, K.K., and Levy, R.J. (2017). Evidence of mitochondrial dysfunction in autism. Oxidative Medicine and Cellular Longevity<\/em>. Department of Anesthesiology, Columbia University Medical Center.<\/p>\n\n\n\n

Higgins, J.M., et al. (2021). Defining autistic burnout through experts by lived experience. Autism<\/em>. Definition of consensus using the Delphi method.<\/p>\n\n\n\n

McEwen, B.S. (1998). Protective and damaging effects of stress mediators. New England Journal of Medicine<\/em>, 338(3), 171-179. Neuroendocrinologist, Rockefeller University. Concept of allostatic load.<\/p>\n\n\n\n

Naviaux, R. K. (2014). Metabolic features of the cell danger response. Mitochondrion<\/em>, 16, 7-17. Professor of Medicine, Pediatrics and Pathology, and director of the Mitochondrial and Metabolic Disease Center, University of California at San Diego.<\/p>\n\n\n\n

Naviaux, R.K., et al. (2016). Metabolic features of chronic fatigue syndrome. PNAS<\/em>, 113(37), E5472-E5480.<\/p>\n\n\n\n

Naviaux, R. K. (2019). Metabolic features and regulation of the healing cycle. Mitochondrion<\/em>, 46, 278-297.<\/p>\n\n\n\n

Raymaker, D.M., et al. (2020). \u00abHaving all of your internal resources exhausted beyond measure and being left with no clean-up crew\u00bb: Defining autistic burnout. Autism in Adulthood<\/em>, 2(2), 132-143. Portland State University and Academic Autism Spectrum Partnership in Research and Education.<\/p>\n\n\n\n

Rossignol, D.A. and Frye, R.E. (2012). Mitochondrial dysfunction in autism spectrum disorders: a systematic review and meta-analysis. Molecular Psychiatry<\/em>, 17, 290-314.<\/p>","protected":false},"excerpt":{"rendered":"

Val\u00e9rie-Anne O’Callaghan Circula estos d\u00edas una afirmaci\u00f3n que se ha compartido decenas de miles de veces: el agotamiento neurodivergente ser\u00eda un fen\u00f3meno celular en lugar de psicol\u00f3gico, y la ciencia mitocondrial explicar\u00eda por qu\u00e9 los consejos habituales de recuperaci\u00f3n fracasan con las personas autistas y con TDAH. La afirmaci\u00f3n tiene una parte cierta, una parte […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21],"tags":[],"class_list":["post-1243","post","type-post","status-publish","format-standard","hentry","category-articulos-de-interes"],"_links":{"self":[{"href":"https:\/\/valerieocallaghan.com\/en\/wp-json\/wp\/v2\/posts\/1243","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/valerieocallaghan.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/valerieocallaghan.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/valerieocallaghan.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/valerieocallaghan.com\/en\/wp-json\/wp\/v2\/comments?post=1243"}],"version-history":[{"count":1,"href":"https:\/\/valerieocallaghan.com\/en\/wp-json\/wp\/v2\/posts\/1243\/revisions"}],"predecessor-version":[{"id":1244,"href":"https:\/\/valerieocallaghan.com\/en\/wp-json\/wp\/v2\/posts\/1243\/revisions\/1244"}],"wp:attachment":[{"href":"https:\/\/valerieocallaghan.com\/en\/wp-json\/wp\/v2\/media?parent=1243"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/valerieocallaghan.com\/en\/wp-json\/wp\/v2\/categories?post=1243"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/valerieocallaghan.com\/en\/wp-json\/wp\/v2\/tags?post=1243"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}