Complaints & connections · borters.ch
Tiredness is a signal, not a character trait — and surprisingly often it has a measurable, fixable cause.
Also known as: fatigue · tiredness · low energy · always tired
Open in the tool — with search and all the links →This compilation is for information and replaces neither medical diagnosis nor treatment. If you have symptoms, see a doctor.
Persistent tiredness that sleep doesn’t relieve is a very common symptom with many possible causes — usually none dangerous. Common ones are too little or poor sleep, stress and mental strain (including depression), iron or vitamin B12 deficiency, an underactive thyroid, unrecognised high blood sugar or sleep apnoea. Certain medicines cause tiredness too. A few simple blood tests and an honest look at sleep and daily life often already bring clarity. If the exhaustion persists despite all this and is marked by a clear worsening after exertion, ME/CFS may be behind it (separate dossier).
The key first step: enough and regular sleep, breaks, less stress.
Iron/ferritin, B12, TSH and blood sugar clarify many common causes.
Once the cause is found, the tiredness usually improves with its treatment.
If everything worsens markedly hours after exertion, see the ME/CFS dossier.
Within the first hour after getting up, 15 to 30 minutes outdoors — even under a cloudy sky.
Lie down for twenty minutes or go outside, no longer sleep after 3 p.m.; keep lunch lighter.
A worm that entered through the skin while barefoot takes small amounts of blood daily. The iron store empties over months without blood ever being visible.
Leaden tiredness with pallor in the months after a tropical journey can come from the breakdown of red cells. A migrating worm larva also causes tiredness with raised eosinophils — a blood test tells them apart. The migrating larva usually comes from the roundworm of dog and cat, from a sandpit or dog faeces.
About one in five people report lasting tiredness; in roughly two thirds a graspable cause turns up in the end — most often sleep, iron, thyroid, mood or a medicine. It counts as chronic from six months. After an infection, exhaustion lasting four to twelve weeks is the normal course; only beyond that does a wider work-up pay off.
There is no drug against tiredness. What is prescribed replaces a documented shortfall: iron works with low ferritin even without anaemia and needs four to twelve weeks; B12 corrects the blood in weeks and the nerves in months; thyroid hormone needs six to eight weeks for full effect. Caffeine moves tiredness, it does not remove it — a half-life of about five hours explains why a coffee at four in the afternoon still disturbs sleep.
Caffeine needs about twenty minutes. Sleeping briefly beforehand gives both at once. An open window and loud music only fake alertness.
Lack of sleep, chronic stress and mental strain are the most common causes.
Detectable via blood tests and usually easy to correct.
A common, treatable reason for exhaustion.
Unrefreshing sleep (apnoea) and high blood sugar also cause tiredness.
The most common single reason for exhaustion without a finding, above all in women with periods. Ferritin shows the empty store long before the haemoglobin falls — so a normal blood count is no answer here.
Causes tiredness, problems concentrating and tingling, often already at values in the lower normal range. Under acid blockers, under metformin and with a plant-based diet it belongs checked.
A lack causes muscle weakness, muscle pain and a leaden tiredness. At our latitudes it is the rule from October to April, not the exception.
Judged together with B12: supplementing it alone can improve the blood count while a B12 deficiency goes on working at the nerves.
Even a slight fluid deficit lowers concentration and drive measurably. The simplest test takes three days: drink evenly and see whether anything changes.
The most commonly findable reason, especially in women before menopause. Ferritin under 30 µg/l counts as the line for many, even without anaemia. 100 mg every second day is absorbed better than daily — otherwise hepcidin blocks it.
In winter a large part of central Europe sits below the target value. 20–50 µg (800–2000 IU) a day is the usual frame; the studies on tiredness itself are inconsistent, those on bone are not.
With vegan eating, on metformin and on acid blockers for years it belongs measured. After starting to take it the blood value says nothing — hence beforehand.
Statins measurably lower the body’s own level. Whether that explains the muscle complaints is open; studies at 100–200 mg a day over 12 weeks contradict each other.
In pregnancy clearly established against neural-tube defects, otherwise mainly with deficiency. Can mask a B12 deficiency — watch both.
The first axis with any lasting tiredness — it is common, simple to check and readily treatable.
Too little causes weakness, nausea and low blood pressure; too much causes sleeplessness and exhaustion at the same time. A single value in the afternoon answers neither question.
If the tiredness lies above all in the morning and vanishes in the evening, it is about rhythm rather than a shortage. Light in the morning is then the most effective measure.
Tiredness one to two hours after eating, especially after a lot of carbohydrate, belongs to this axis and can be tested by changing what the meal is made of.
Four values explain a large share of exhaustion and all are treatable. Ferritin below 30 counts as deficiency even when the blood count looks normal — after correction improvement takes 8–12 weeks.
The afternoon dip after a very carbohydrate-heavy meal is real and measurable. Protein and fibre alongside keep the curve flatter — noticeable within days, not weeks.
Caffeine blocks the tiredness signal for some hours; afterwards it returns all at once. In chronic exhaustion this easily becomes a circle that worsens sleep further.
An empty store causes tiredness long before anaemia shows — measure ferritin, do not guess.
Rhodiola and ginseng are traditionally taken against exhaustion.
The smell makes one more awake, measurably and briefly. Against an iron deficiency, a low B12 or too little sleep it achieves nothing — there the way leads through a value.
Common in the diffuser in the morning. Citrus oils make skin light-sensitive — on the skin only in the evening or in the phototoxin-free quality.
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