Spring fatigue isn't an illness but a seasonal transition phase: as light and warmth increase, the body readjusts its hormone and day-night rhythm, which temporarily takes a toll on energy. Iron, B vitamins, magnesium, and vitamin C matter here – in everyday life, daylight, exercise, a consistent sleep rhythm, and drinking enough fluids all help.
The sun is shining, the blackbird is singing, the first crocuses are blooming – and you? You feel tired, heavy and listless. Of all times, right now. Many know this paradox: when winter goes, spring fatigue is the first thing to make itself felt. The good news: this is not an illness, but a phase of adjustment for your body – and you can actively shape it. Here you will learn which nutrients play a role and what really helps in everyday life.
The key points at a glance
Spring fatigue is a seasonal phenomenon: with more light and warmth, the body readjusts its hormone and day-night rhythm – which temporarily costs energy. Nutrients that count here are iron (oxygen transport, less tiredness), B vitamins and magnesium (energy metabolism, nervous system) as well as vitamin C (less tiredness, better iron absorption). In everyday life, daylight, exercise, a fixed sleep rhythm and enough drinking help. With persistent exhaustion: have it clarified by a doctor.
Why you first become tired in spring
It sounds contradictory, but has a solid reason. In the transition from winter to spring, much changes for the body at the same time: the days become longer and brighter, the temperatures rise, the day-night rhythm shifts. The organism has to adapt its hormone balance to these new conditions – put simply, it winds back the wintry „rest setting" and switches over to „active". This adjustment takes time, and it is precisely in this phase that many people feel listless or have an increased need for rest. A completely natural reaction, no cause for concern.
In addition: after the dark winter months, the stores of some nutrients can be lower – sunlight was scarce, fresh, varied fare often too. A balanced diet with plenty of vegetables, fruit, wholegrains and legumes now lays a good foundation. Supplements do not replace a healthy lifestyle, but can sensibly complement it where gaps actually exist. If the fatigue persists beyond the adjustment phase or is pronounced: please have it clarified by a doctor to rule out other causes.
Iron: the oxygen transporter
If you feel pale and drained, iron is one of the first nutrients that experts think of. The body needs iron for the formation of red blood cells and the transport of oxygen in the blood – without enough oxygen in the cells, the engine simply does not run smoothly. The EU-approved statements are strong here and may be clearly stated: iron contributes to a normal oxygen transport in the body, to the normal formation of red blood cells and haemoglobin, to a normal energy metabolism, to a normal cognitive function as well as to the reduction of tiredness and fatigue.
Good plant-based iron sources are legumes, oats, pumpkin seeds, wholegrains and green vegetables. Practical trick: vitamin C increases iron absorption – a squeeze of lemon or some peppers with the iron-rich meal is worthwhile, as Combining vitamin C and iron shows. Coffee and black tea directly with the meal, on the other hand, inhibit absorption. How to recognise a deficiency can be read in Recognising and preventing iron deficiency, and how long stores take to fill is explained in Iron: how long until an effect?. Important: only supplement iron where a need has been established – this can be clarified by a doctor via the ferritin value.
B vitamins and magnesium: the energy duo for cells and nerves
The B vitamins work as a team and are closely linked to the energy metabolism. Vitamin B12, B6, niacin (B3), folate and riboflavin (B2) contribute to the reduction of tiredness and fatigue; several additionally support a normal function of the nervous system and normal psychological function. Good sources: wholegrains, legumes, nuts, oats and – for B12 – animal-based foods. Overview in B vitamins at a glance, signs of deficiency in Vitamin B12 deficiency: signs.
Magnesium is involved in more than 300 enzymatic reactions and contributes to a normal energy metabolism, to the normal function of the nervous system, to normal psychological function, to a normal muscle function and to the reduction of tiredness and fatigue. Sources: nuts, wholegrains, legumes, dark chocolate. How long a good supply takes is placed in context by Magnesium: how long until an effect?. The interplay of these nutrients is shown in More energy with magnesium, iron and B vitamins, and a functional view is offered by Nutrients for the energy metabolism.
| Nutrient | Approved statement (excerpt) | Example sources |
|---|---|---|
| Iron | Oxygen transport; reduction of tiredness | legumes, oats, pumpkin seeds |
| Vitamin B12 | Energy metabolism; nervous system; tiredness | dairy products, eggs, fish |
| Magnesium | Nervous system; energy metabolism; tiredness | nuts, wholegrains, legumes |
| Vitamin C | Reduction of tiredness; iron absorption | peppers, berries, citrus fruits |
| Vitamin D | Muscle function; immune system | sunlight, oily fish, supplement |
Vitamin C and vitamin D: the spring double act
Vitamin C is more than just an immune nutrient: it contributes to the reduction of tiredness and fatigue, to a normal energy metabolism, to the normal function of the nervous system and to normal psychological function. In addition, it increases iron absorption and supports the immune system – in spring, therefore, interesting on several counts at once. Peppers, broccoli, berries and citrus fruits deliver plenty; more in Vitamin C: effect and daily requirement.
Vitamin D the body produces predominantly itself when sunlight hits the skin. After the winter half-year, the status can turn out lower, because the sun stood low for months – a connection that The dark season, light & vitamin D explains. Vitamin D contributes to the maintenance of a normal muscle function and to a normal function of the immune system. How to assess your status is shown in Vitamin D: dosage, blood value, winter. Whether supplementation makes sense depends on the individual value and can be clarified by a doctor.
What the research is looking into
The seasonal adjustment of humans in spring is studied chronobiologically – that is, how light controls the day-night rhythm and the interplay of messenger substances such as melatonin and serotonin. Well-established textbook knowledge here is the central role of daylight for the internal clock. The connection between nutrient supply, energy metabolism and the feeling of freshness is well secured via the approved health claims. What triggers individual spring fatigue in a particular case is complex – this is why, with strong or long exhaustion, a doctor's assessment is always worthwhile.
When tiredness is more than spring fatigue
As harmless as the seasonal adjustment usually is – not every tiredness belongs to it. There are warning signs where a doctor's check is sensible instead of continuing to blame the season: exhaustion that persists over several weeks or intensifies; pronounced paleness, palpitations or shortness of breath; concentration problems that clearly limit everyday life. Such signs can point to a nutrient deficiency such as iron deficiency – recognisable, among other things, via the ferritin value in the blood, as Recognising and preventing iron deficiency describes – or have other causes that belong in the hands of a doctor. The rule of thumb: temporary spring sluggishness that eases after one to two weeks is normal. Persistent or unusually strong exhaustion is a case for the practice, not for self-experiments with high doses.
Nutrient timing in spring: small tricks, big effect
Anyone who supplements or eats deliberately can get more out of it with a few simple timing rules. Iron from plant-based sources you absorb best together with vitamin C – the classic is lentils with peppers or a glass of orange juice with the iron-rich breakfast. Coffee and black tea, by contrast, you had better place one to two hours away from the iron-rich meal, because they inhibit absorption. Magnesium many people tolerate well in the evening, while B vitamins and vitamin C rather suit the day. Vitamin D, as a fat-soluble vitamin, is best absorbed with a meal containing some fat. Anyone combining several supplements will find the right structure for the day in Combining supplements correctly and Intake rhythm: morning or evening.
Everyday life: your 5-point plan for a fresh start
Nutrients are only one building block – in everyday life the transition can be actively shaped. These habits help the most:
- Soak up daylight: even a morning walk sets the internal clock to the brighter season. Light in the morning is the strongest pacemaker.
- Get moving: regular, moderate exercise in the fresh air gets the circulation going – even on tired days.
- Keep the sleep rhythm stable: fixed times for sleeping and getting up ease the adjustment. More in Nutrients for the nerves.
- Drink sufficiently: with rising temperatures the body needs more fluid – water and unsweetened teas are ideal.
- Eat a balanced diet: fresh seasonal vegetables, wholegrains and legumes deliver the nutrients mentioned in a natural way.
Anyone who additionally struggles in spring with a tickly nose or itchy eyes will find background in Allergy in spring: pollen season. And if your everyday life is demanding anyway, Nutrients under stress at work helps further.
Honestly assessed
Two things must be clearly separated: that iron, B vitamins, magnesium and vitamin C contribute to a normal energy metabolism and to the reduction of tiredness is well secured via approved health claims. That a capsule „magics away" spring fatigue is not – nutrients only work where a gap exists, and replace neither sleep nor daylight nor exercise. Spring fatigue is not an illness, but a temporary adaptation. The best approach is the combination: a solid basic supply plus the right everyday habits. If the exhaustion persists, it belongs in the hands of a doctor.
Suitable products from Scheunengut
For the nutrients mentioned you will find suitable categories: in Energy we bundle products around energy and vitality, under Vitamins, minerals & trace elements specifically iron, magnesium, B-vitamin and vitamin C supplements, plus Iron and Vitamin D. You can read on in Energy with magnesium, iron & B vitamins, Recognising iron deficiency and Nutrients for the energy metabolism. All products are lab-tested and made in Germany.
Frequently asked questions (FAQ)
Is spring fatigue an illness?
No. Spring fatigue is a seasonal phenomenon and a natural phase of adaptation: with more light and warmth, the body readjusts its hormone and day-night rhythm, which temporarily costs energy. If the fatigue persists beyond the adjustment phase, however, or is pronounced, the cause should be clarified by a doctor.
Which nutrients help with spring fatigue?
Above all, iron (oxygen transport, reduction of tiredness), B vitamins and magnesium (energy metabolism and nervous system) as well as vitamin C (less tiredness and better iron absorption) are relevant. After winter, the vitamin D status can also be lower. Supplementation should be targeted where a gap actually exists.
Why is one tired in spring, even though more sun is shining?
Precisely because everything is changing: longer, brighter days and warmer temperatures force the body to readjust its hormone balance and day-night rhythm. This adjustment takes time and initially costs energy – hence the feeling of sluggishness, even though the external conditions are actually inviting.
What quickly helps against spring fatigue in everyday life?
The most effective are daylight in the morning (the strongest pacemaker for the internal clock), regular moderate exercise in the fresh air, a fixed sleep rhythm, sufficient drinking and a balanced diet with seasonal vegetables, wholegrains and legumes. These habits support the adjustment considerably more than any single supplement.
Health notice: This guide is for general information purposes only and does not replace individual medical or pharmaceutical advice. Food supplements are not a substitute for a balanced, varied diet and a healthy lifestyle. If you have health concerns, are pregnant or breastfeeding, or are taking medication, please consult a doctor or pharmacist. How our guides are created →
Sources
- Vitamin B12 (Cobalamins) – Reference Values for Nutrient Intake — German Nutrition Society (DGE)
- Magnesium – Reference Values for Nutrient Intake — German Nutrition Society (DGE)
- Reference Values for Nutrient Intake (Overview) — German Nutrition Society (DGE)
- Dietary Supplements — Verbraucherzentrale








