Burnout: when the engine no longer starts

You recognize it when you read it

The alarm in the morning. 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 up. It doesn't happen.

In the meeting you hear yourself speaking, as if you weren't really there. You say the right sentences. You know you can do this. But you can no longer truly take an interest in it. The things that used to matter to you have lost their resonance.

In the evening, the tank is empty. But your thoughts keep spinning. You sleep somehow. You wake up and are exhausted again. The doctor says: blood count is great. Thyroid okay. Everything 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 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 no one 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 paint a picture 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 illnesses, with 42 percent of all cases, are the most common cause of early retirement in Germany. The AOK Absenteeism Report 2024 documents an increase in burnout-related sick-leave days from 100 (2014) to around 184 days per 1,000 insured (2024). This is no longer a trend. It is a shift.

The most affected occupational groups according to DAK 2024: educators and social pedagogues (534 sick-leave days per 100 insured), elderly care (531), healthcare overall (more than 40 percent above average). But burnout also shows up massively in creative professions, technology, leadership positions and in the so-called rush hour of life, when career, family and financial pressure simultaneously reach their peak.

What burnout in everyday life can really look like

What burnout really is, and what it isn't

Burnout is classified in ICD-11 under the code QD85 as an "occupational phenomenon". An important nuance: it is explicitly not a medical diagnosis, but a factor influencing health status. In Germany, the code Z73.0 is used in addition. The WHO defines burnout through 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 is happening physiologically, 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 path to exhaustion

The biphasic cortisol model: from too much to too little

This is one of the most frequently overlooked mechanisms of burnout. Cortisol does not follow a simple pattern over the course of burnout. 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. High HRV means: the autonomic nervous system is elastic, responsive, regulated. 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 increases 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 2025 study in the field of epigenetics identified the cortisol/DHEA-S ratio as a strong predictor of biological age acceleration. Chronic stress doesn't just age you metaphorically. It ages you measurably.

Neuroinflammation: the body burns from within

Bierhaus et al. (2003, PNAS) demonstrated 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, making the cortisol brake system even blunter. A self-reinforcing cycle.

Sleep and burnout: two sides of the same system

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

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

Burnout doesn't always arise from overload alone. Sometimes it arises from a nervous system that has long been running on a baseline of alarm, well before the job became demanding. That is one of the reasons I work holistically.

Adverse Childhood Experiences (ACEs) and burnout are empirically linked: a study among healthcare staff (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. This does not mean that burnout always has a trauma history. But it does mean that 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 don't start with the lab

The first conversation with me 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 do you go to bed? What makes falling asleep difficult? And then: what brought you to where you are now? Not work alone. The whole person.

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

Extended diagnostics: what lies beyond the standard lab

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

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 at multiple levels simultaneously.

Burnout Fix+: infusion therapy at the biochemical root

There are states in which sleep, supplements and lifestyle work are no longer enough to lift the system. When mitochondria are running 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 that almost no one in burnout treatment talks about. And it is the most important thing I have learned after years in practice.

It is possible, through infusions, supplements, sleep optimization and HRV training, to actually rebuild energy. That works. But if this new energy flows 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 gasoline on a fire that had only momentarily grown smaller.

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

Supplements for burnout: what the evidence says

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

Seven levers. Start tomorrow. Not the day after.

Burnout cannot be solved over a weekend. But you can start tomorrow. Choose two levers right now while reading. Just two. Start with those.

Am I burned out? An assessment aid.

What follows is not a diagnosis. It is an invitation to honest self-observation. Count along how many of these points apply to you. The evaluation is at the end.

Your evaluation

Burnout in the system: connections I see in practice

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