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More energy through autumn: Identify and overcome the causes of fatigue


Do you often feel tired even though you've had enough sleep? Especially in autumn, many people seem to experience a dip in energy. The causes of fatigue are incredibly diverse, ranging from simple lifestyle factors to unnoticed imbalances in your body. Often, it's a combination of sleep deprivation, nutrient deficiencies, or hormonal fluctuations that makes life difficult for us, particularly during the darker months.

This article will help you understand why autumn makes you tired and how you can uncover the true reasons for your exhaustion. Because only when you understand your body can you effectively support it and regain your full strength.

Why autumn makes you tired

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The days are getting shorter, the weather grayer, and suddenly the sofa is calling to you like a magnet. Do you often feel sluggish and unmotivated in autumn? You're not alone. This isn't a personal weakness, but a completely natural reaction of your body to the changing light conditions.

It's more of a biological adaptation. Your body is a finely tuned system that reacts strongly to external stimuli like daylight.

The hormone duo for your sleep-wake cycle

The main reason for classic autumn fatigue is the interplay of two important hormones: melatonin and serotonin . Think of serotonin as your personal "good mood manager." It keeps you awake, motivated, and happy. Its production is primarily boosted by daylight.

Its counterpart is melatonin, the well-known "sleep hormone." It is released in darkness and signals to your body that it's time to rest. Less sunlight in autumn therefore means, quite specifically:

  • Less serotonin: Your mood can drop and you may feel less motivated.
  • More melatonin: Your body also produces more of this sleep hormone during the day, which leads to this constant tiredness.

Your internal clock is out of sync. Your body is in a hormonal dilemma – it no longer quite knows when to be awake and active or tired and calm.

More than just the lack of light

The seasonal change is often just the trigger that brings existing imbalances to light. Autumn fatigue can be exacerbated by very individual factors that often go unnoticed for a long time. Perhaps your body is lacking a crucial nutrient to produce energy, or your stress level is disrupting your hormonal balance.

And that's where you come in. Instead of simply accepting fatigue, you can understand it as a signal from your body to take a closer look. It's an opportunity to uncover deeper causes of fatigue . A hormone, gut, or nutrient test can help you better understand your body, identify imbalances, and take targeted action. Intrigued? In our article, you'll learn how to test for nutrient deficiencies and take targeted countermeasures.

Invisible energy drainers in your diet

You get enough sleep, you exercise, but still constantly feel like you're going through the day with the handbrake on? The answer to this debilitating exhaustion could be right on your plate – or rather, in what's missing there. One of the most common causes of fatigue is actually an unnoticed deficiency in essential nutrients.

Imagine your body as a power plant. To produce energy around the clock, it needs very specific raw materials. Vitamins like B12 and D , or minerals like iron and magnesium, are like the spark plugs that keep the engine running. If these tiny but crucial helpers are missing, the entire energy production sputters. The result: You feel weak, exhausted, and lacking in energy.

Your body sends you signals

A nutrient deficiency often creeps into everyday life with symptoms that we readily attribute to stress or the weather. Does this sound familiar? Do your legs feel leaden after a short walk, or does your concentration completely collapse in the afternoon? These are typical whispers from your body that something is wrong.

  • Iron deficiency: Often leads to paleness, shortness of breath during exertion, and a feeling of simply having no energy. The reason: Without iron, oxygen transport in the blood is impaired.
  • Vitamin D deficiency: A major issue, especially during the darker months. It can manifest itself through muscle weakness and a general lack of energy.
  • Vitamin B12 deficiency: Often manifests as a strange tingling in the hands and feet, accompanied by a deep, almost paralyzing fatigue.
  • Magnesium deficiency: Can not only lead to muscle cramps, but also disrupt your sleep – which of course further increases the exhaustion the next day.

This table gives you a quick overview of which nutrient deficiencies are often behind fatigue and which other signs may indicate this.

Common nutrient deficiencies and their symptoms

nutrient Typical symptoms of deficiency Relevant test at mybody-x
iron Pallor, hair loss, brittle nails, concentration problems Iron ferritin self-test
Vitamin D Muscle weakness, bone pain, increased susceptibility to infection Vitamin D self-test
Vitamin B12 Tingling in limbs, memory problems, burning tongue Nutrients | VitalCheck Complete
magnesium Muscle cramps, sleep disorders, nervousness, headaches Nutrients | VitalCheck Complete

This list is, of course, only a starting point. A deficiency can manifest itself somewhat differently in each person.

The following graphic shows how everyday habits and nutrient deficiencies are related and can lead to energy deficiency.

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The numbers make it clear: It's not just classic nutrient deficiencies like iron deficiency ( 30% ) that slow us down. Even seemingly simple things like not drinking enough water ( 50% ) or skipping meals ( 60% ) rob your body of valuable energy.

From assumption to certainty

General advice like "Eat more fruit" is well-intentioned, but often a shot in the dark. Every body is different and has its own unique needs. Simply taking random supplements at random is therefore rarely the solution.

The crucial step is knowing your personal needs. Only when you know what your body truly lacks can you take targeted countermeasures.

Here, knowledge is your greatest strength. A nutrient test from mybody-x is like a precise inventory of your personal powerhouse. It shows you in black and white which building blocks you're lacking. This allows you to specifically adjust your diet and finally replenish your depleted energy reserves sustainably.

If you'd like to delve deeper into this topic, read our detailed article on nutrient deficiencies and fatigue and lack of energy . This will turn assumptions into facts and help you take the first, most important step towards more energy and well-being.

When your hormones get out of balance

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Hormones are the invisible conductors of our bodies. They determine not only our mood and sleep, but also our metabolism and thus our overall energy level. If this finely tuned orchestra falls even slightly out of rhythm, chronic fatigue is often one of the first and most frustrating signs.

This hormonally induced exhaustion often feels very different from the tiredness after a short night. It's a deep feeling of lethargy that simply won't go away, no matter how long you sleep. Many describe it as if they're constantly "running into a wall," without knowing the real reason why.

Your body's accelerator pedal – the thyroid gland

One of the most common hormonal causes of fatigue is a thyroid dysfunction. Think of this small organ as your body's accelerator pedal. If it produces too few hormones (a condition known as hypothyroidism), your entire body runs on low power.

The effects are noticeable throughout the entire body:

  • Constant fatigue: You feel exhausted as soon as you wake up in the morning.
  • Lack of motivation: Everyday tasks suddenly feel like insurmountable mountains.
  • Concentration problems: A "brain fog" makes clear thinking almost impossible.
  • Weight gain: Even though you haven't changed anything about your diet, you are inexplicably gaining weight.

Because these symptoms are so nonspecific, a mild underactive thyroid often goes undetected for a long time – and in the meantime, it gradually robs you of your quality of life.

Stress and the cortisol rollercoaster

Another important player in the hormonal symphony is cortisol , our well-known stress hormone. Normally, a morning surge in cortisol ensures that we wake up and start the day full of energy. However, chronic stress completely disrupts this natural rhythm.

A persistently high cortisol level can completely exhaust your adrenal glands, leading to a condition often described as adrenal fatigue. The result? You can barely get out of bed in the morning and experience a deep energy slump in the afternoon.

Do you know that feeling of being "tired but simultaneously energized"? That's a classic sign that your stress hormone system is out of balance. It drains your energy instead of giving it to you.

Sex hormones like estrogen and testosterone also have a direct link to your vitality. An imbalance here can also lead to unexplained fatigue, especially in women during menopause or in men going through andropause.

Because these connections are so complex, it's almost impossible to find the cause by guesswork. A hormone test from mybody-x can provide valuable clarity. It analyzes your key hormones and shows you whether your fatigue has a hormonal cause. To better understand these complex relationships, we recommend our in-depth article on hormone balance . With this knowledge, you can take targeted steps to regain your inner balance and boost your energy.

The vicious cycle of stress and poor sleep

Good sleep is the undisputed foundation for your daily energy. But what happens when stress systematically robs you of sleep, and this lack of sleep makes you even more susceptible to new stress? Welcome to the vicious cycle of exhaustion – one of the most persistent causes of fatigue .

Perhaps you're familiar with this: You've spent eight hours in bed, but still feel completely exhausted in the morning. This is often because the quality of your sleep is far more important than its duration. Chronic stress puts your body in a state of constant alert, thus preventing the crucial, restorative deep sleep phases in which body and mind recover.

When your mind doesn't switch off at night

Imagine your brain like a computer that's supposed to shut down overnight and recharge. But when you're stressed, demanding programs keep running in the background – worries about work, personal conflicts, or the endless to-do list for tomorrow. Even though the device was plugged in the whole time, the battery is dead by morning. That's exactly what happens in your body.

This state means you not only start the day tired, but you're also much less resilient. Small challenges suddenly seem insurmountable, your patience runs out, and you become more irritable. This, in turn, creates new stress, which again disrupts your sleep the following night. It's a cycle that's difficult to break.

Chronic stress is like a silent energy vampire. It not only drains your energy during the day, but also sabotages the nighttime regeneration you so desperately need.

Lack of sleep is one of the main causes of fatigue in Germany. Alarmingly, according to recent studies, around 60% of Germans sleep less during the week than they ideally need. A sleep study by Pronova BKK shows that working people in particular are accumulating a sleep deficit: 66% of them sleep less than they would like on weekdays, which often leads to chronic fatigue. You can read more about these alarming figures in the TK study "Sleep Well, Germany" .

To break this vicious cycle, workplace stress reduction measures can also be helpful. Learn more about how companies can increase concentration and reduce employee stress .

Cortisol: Your Stress Indicator

This is precisely where mybody-x's diagnostics come in. The key to visualizing the impact of stress on your body often lies in the hormone cortisol . A hormone test that measures your cortisol levels throughout the day can reveal how much stress disrupts your inner balance.

A persistently elevated or imbalanced cortisol level is a clear warning sign that your body is under constant stress. Learn more about what cortisol is and how it affects your energy in our article. With this knowledge, you can finally take targeted steps to counteract the problem and get back the well-deserved, restful sleep you deserve.

How your gut health controls your energy

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Did you know that one of the main causes of fatigue is often hidden deep inside you? More precisely: in your gut. This fascinating organ is so much more than just a digestive tract. You can think of it as the central control point that decides which nutrients your body can absorb and convert into energy.

Imagine it like a gardener who has the best seeds in the world. But if the soil – meaning your gut – is depleted and anything but healthy, even the most nutrient-rich seed – your food – simply cannot thrive. Your body then essentially starves at a cellular level, even if you are eating consciously and healthily.

When the gut becomes an energy thief

An imbalanced gut flora, also known as the microbiome , or undiagnosed food intolerances can have precisely this effect. They cause important energy sources like vitamins, minerals, and carbohydrates to be excreted unused. Even worse, your body actually invests additional energy to process foods it can't tolerate.

Have you ever noticed such signs in yourself?

  • Unexplained fatigue after eating: Instead of feeling energized, you fall into a deep slump.
  • Bloating and a feeling of fullness: These are signals that your digestive system is struggling and using up valuable resources in the process.
  • Skin problems or mood swings: The gut is closely connected to your brain and skin via the so-called gut-brain axis.

A healthy gut is the foundation of your vitality. If this foundation has cracks, every effort to gain more energy becomes a struggle uphill. Your "inner soil" must be healthy for energy to grow at all.

This is precisely where the tests from mybody-x offer crucial insights. A gut health test can show you the diversity of your gut bacteria, while an intolerance test specifically reveals which foods are secretly putting a strain on your body.

They essentially analyze your "inner soil" and uncover whether the true cause of your persistent fatigue lies hidden there. With this knowledge, you can take targeted steps to support your gut, adjust your diet, and thus create a strong foundation for lasting energy. Instead of groping in the dark, you receive a clear roadmap for your well-being.

No more guesswork: Your path to more energy with mybody-x

You now know the many faces of fatigue – from nutrient deficiencies and hormonal imbalances to stress and digestive issues. But simply knowing this won't replenish your energy reserves. The crucial point now is to use this knowledge and find out what's going on with you personally.

Instead of continuing to grope in the dark and wondering why you're constantly tired, you can take matters into your own hands. Think of the mybody-x self-tests as your personal compass. They help you uncover the true causes of your fatigue – without generic advice, but based on your own body data.

From assumption to certainty

More energy starts with truly understanding your body. Our tests are specially designed so you can easily and discreetly perform them in the comfort of your own home.

  1. Finding the right test: Based on your symptoms and assumptions, choose the appropriate nutrient test, hormone test or gut health test.
  2. Taking a sample, completely relaxed: With the simple instructions, you can take a small blood, saliva or stool sample – all in the comfort of your own home.
  3. Analysis in a German specialist laboratory: You send your sample free of charge to our certified partner laboratory in Germany. There it will be analyzed for you according to the highest scientific standards.
  4. Plain talk about your health: After a short time, you'll receive a detailed yet easy-to-understand results report. It shows you exactly where the problems lie in your body.

With the results from mybody-x, you hold the key to your well-being in your hands. You see in black and white which building blocks your body is lacking or which systems are out of sync. This is the perfect foundation for finally making targeted changes.

Instead of blindly swallowing any dietary supplements or radically changing your diet, you get clear, individual recommendations that really suit you.

Take back control of your energy and well-being. Rediscover your personal balance with the data-driven insights of mybody-x. This will not only help you navigate the challenging autumn season but also allow you to enjoy the entire year full of energy and vitality. Your journey begins now – with the first and most important step: understanding your own body.

Your questions about fatigue and lack of energy – answered briefly

You've now learned a lot about the complex causes of fatigue . To ensure no questions remain unanswered, we've compiled the answers to the most frequently asked questions – brief and to the point.

When should I see a doctor about my fatigue?

Listen to your gut feeling. If fatigue suddenly strikes you without any apparent reason, is extremely intense, or simply doesn't go away for weeks, you should have it checked out by a doctor.

It becomes especially important if other warning signs such as fever, unexplained weight loss, or pain occur. A doctor's visit will provide clarity and rule out serious illnesses.

Does the psyche also play a role in fatigue?

Yes, a huge one indeed. Chronic stress, burnout, depression, or anxiety disorders are often the real energy drains that cause deep, debilitating exhaustion.

A vicious cycle often develops: A physical factor such as a nutrient deficiency weakens the psyche, and the mental state in turn intensifies the physical symptoms.

How quickly can I regain my energy?

It's impossible to give a general answer – it depends entirely on the cause. If a simple nutrient deficiency is the culprit, you'll often notice a significant improvement after just a few weeks of dietary changes or targeted supplementation.

However, if hormones are out of balance or gut health is compromised, a holistic approach and more time are usually needed. Patience and consistency are required, as your body needs time to regain its natural balance.

Remember: Your path to more energy is a marathon, not a sprint. Every small step you take based on knowledge about your body brings you closer to your goal.

The mybody-x tests provide you with precisely this knowledge base. Instead of groping in the dark, you can take targeted and effective measures for your well-being.


Are you ready to take back control and get to the bottom of the true causes of your fatigue? Discover the self-tests from mybody-x and start your journey to a more vibrant life today. Find the right test for you now at mybody-x.com .

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