Burnout: when the engine no longer starts

You recognize it when you read it

Morning, the alarm. Not tiredness, but heaviness. As if someone were sitting on your chest. You lie still for a moment and wait for something inside you to open. It does not happen.

In the meeting you hear yourself speak as if you were not really there. You say the right sentences. You know you can do this. But you can no longer really care. The things that used to be important to you have lost their sound.

In the evening, the tank is empty. But the thoughts keep turning. You sleep somehow. You wake up exhausted again. The doctor says: blood count is fine. Thyroid okay. All normal.

What is missing in that moment is a different question. Not: what is broken? But: how is your nervous system running? What is your cortisol doing at 8 in the morning, at 12 noon, at 10 in the evening? How high is your heart rate variability? And what is actually happening in your brain when you have been running on permanent current for months?

The numbers nobody likes to talk about

Burnout knows no city limits. It knows no industry and no age. It hits nurses in Hannover, software developers in Munich, teachers in Hamburg and founders in Berlin. What has changed is the scale. And the speed. The numbers from Germany 2024 show a picture that no one should ignore.

According to the DAK Psychreport 2024, seven percent of all insured persons in Germany were affected by mental illness in 2023, with an average illness duration of 33 days per case, more than double the general average. Mental illness, at 42 percent of all cases, is the most common cause of early retirement in Germany. The AOK Absence Report 2024 documents a rise in burnout-related sick days from 100 (2014) to around 184 days per 1,000 insured persons (2024). This is no longer a trend. This is a shift.

The most strongly affected occupational groups according to DAK 2024: educators and social workers (534 sick days per 100 insured), elder care (531), the healthcare sector overall (more than 40 percent above average). But burnout also shows up massively in creative professions, technology, leadership positions, and in what is called the rush hour of life, when career, family and financial burden all reach their peak at the same time.

What burnout can really look like in everyday life

What burnout really is, and what it is not

Burnout is classified in ICD-11 under code QD85 as an "occupational phenomenon". An important nuance: it is explicitly not a medical diagnosis, but a factor that influences health status. In Germany, the additional code Z73.0 is used. The WHO defines burnout via three dimensions:

What happens in your body when you burn out

This is the part that most doctors cannot explain in a ten-minute conversation. But it is decisive. Because if you understand what physiologically happens, you also understand why certain interventions help and others do not. And above all: why a sick note alone does not restart the engine.

The HPA axis: the stress system and its exhaustion path

The biphasic cortisol model: from too much to too little

This is one of the most often overlooked mechanisms of burnout. Cortisol does not follow a simple pattern in the burnout course. Marchand et al. (2014) and Lennartsson et al. (2015) both described a biphasic model: in early phases, elevated cortisol and a steep morning response. In advanced burnout: hypocortisolism, a flattened curve and paradoxically low morning levels.

HRV: the most measurable signal of your nervous system

Heart rate variability measures how flexibly your heart switches between sympathetic activation and parasympathetic braking. A high HRV means: the autonomic nervous system is elastic, responsive, regulated. A low HRV means: the system is rigid, sympathetically dominated, has lost the brake.

What this can mean clinically: the low HRV in burnout is not a side symptom. It could be an active mechanism through which chronic stress raises cardiovascular risk. According to a meta-analysis published in 2024, burnout raises the risk of coronary heart disease by 20 to 30 percent. Autonomic dysregulation is one of the likely bridges.

What chronic stress can do to your brain

DHEA-S: the forgotten anti-stress counterweight

DHEA-S is the anabolic counterweight to catabolic cortisol. Lennartsson et al. (2013, 2015) showed: adults with chronic stress or clinical burnout had significantly lowered DHEA-S levels and an elevated cortisol/DHEA-S ratio under laboratory stress. A study published in 2025 in the field of epigenetics identified the cortisol/DHEA-S ratio as a strong predictor of biological age acceleration. Chronic stress does not only age you metaphorically. It ages you measurably.

Neuroinflammation: the body burning from within

Bierhaus et al. (2003, PNAS) showed that psychosocial stress directly activates NF-kappaB in peripheral immune cells. NF-kappaB is one of the most central inflammation transcription factors. Chronically activated, it drives elevated IL-6, TNF-alpha and CRP levels. These cytokines in turn inhibit glucocorticoid receptor function, which makes the cortisol braking system even more blunt. A self-reinforcing loop.

Sleep and burnout: two sides of the same system

The bidirectionality is decisive: poor sleep raises burnout risk. Burnout worsens sleep. Both can amplify each other until neither recovery nor work succeeds. Sleep work is therefore not optional in the treatment plan. It is the foundation.

When the body can no longer let go: nervous system, trauma and burnout

Burnout does not always arise from overload alone. Sometimes it arises from a nervous system that has long been running on a baseline tone of alarm, long before the job became demanding. This is one of the reasons why I work holistically.

Adverse Childhood Experiences (ACEs) and burnout are empirically linked: a study on healthcare personnel (2024, Frontiers in Public Health) showed that 83 percent of participants reported at least one ACE, and higher ACE scores were significantly associated with higher burnout. That does not mean burnout always has a trauma history. But it means a good history-taking asks about it.

Burnout and depression: the clinically important distinction

Bianchi et al. (2015, systematic review, 92 studies) found latent correlations of r = 0.57 to 0.74 between burnout and depression. They overlap strongly. But they are not identical, and the distinction has therapeutic consequences.

What I measure, and why I do not start with the lab

My first conversation never starts with the lab. It starts with a long history. What does your day really look like? From when to when do you work? When did the first light reach you this morning? What did you eat? When are you in bed? What makes falling asleep hard? And then: what brought you to where you are now? Not the work alone. The whole person.

Only when I have this picture do I decide which diagnostics will bring new information.

Extended diagnostics: what stands behind the lab

The standard lab shows whether something lies within the reference range. What it does not show: how your tryptophan metabolism runs, whether your cells still respond to cortisol at all, or whether a genetic variant is sabotaging your serotonin system from within. Exactly for this level there are specialized parameters, which I use when the clinical picture calls for them.

My treatment approach: what really helps and what the evidence says

Aust et al. (2023, systematic review, 11 articles) found: individual burnout interventions alone reach an effect size of d = 0.30. Combined approaches of individual and organizational measures: d = 0.54. That is more than twice as strong. The message is clear: burnout requires change on several levels at the same time.

Burnout Fix+: infusion therapy at the biochemical root

There are states in which sleep, supplements and lifestyle work no longer suffice to lift the system. When mitochondria run on reserve, when the nervous system is stuck in a biochemical exhaustion pattern that no longer bootstraps itself, then a more direct intervention is needed. No magic. Biochemistry.

The decisive question: where does the new energy go?

Here lies something hardly anyone speaks about in burnout treatment. And it is the most important thing I have learned in years in practice.

It is possible to actually rebuild energy through infusions, supplements, sleep optimization and HRV training. That works. But if this new energy flows back into the same old patterns, into the same boundaryless work style, into the same beliefs about your own worth, into the same inability to say no, then it is just fuel on a fire that was a little smaller for a moment.

This is the reason why, in burnout, I always work with biodynamic psychotherapy as well, either myself or in close cooperation with appropriately trained therapists. Not because burnout is a psychological problem. But because patterns do not disappear through understanding alone.

Supplements in burnout: what the evidence says

I speak openly about evidence. No miracle cures, no health promises. But targeted biochemical support, when based on lab diagnostics, can be decisive. Dosages I discuss only in personal conversation after the lab.

Seven levers. Start tomorrow. Not the day after.

You do not solve burnout in a weekend. But you can start tomorrow. Choose two levers now while reading. Only two. Start with those.

Am I burned out? An assessment aid.

What follows is no diagnosis. It is an invitation to honest self-observation. Count along how many of these points apply to you. The evaluation can be found at the end.

Your evaluation

Burnout in the system: connections I see in practice

Burnout is rarely an isolated phenomenon. It links with other body systems that are also focal areas in my practice. A disturbed gut flora raises neuroinflammation and impairs neurotransmitter synthesis. Heavy-metal burden inhibits selenoproteins and thyroid enzymes. Mold toxins destabilize the HPA axis. Hormonal imbalance and burnout reinforce each other through the cortisol-HPG-axis link.