Anxiety and Fatigue: Causes, Symptoms, and How to Cope

Anxiety and Fatigue: What This Article Covers

If you're dealing with anxiety and fatigue, you're not alone. This combination—feeling both mentally wired and physically drained—is a common struggle. In this guide, you'll find clear answers to pressing questions like "What does anxiety fatigue feel like?" and "How do you get rid of anxiety fatigue?" We'll also explore the deeper biological links, including how your gut health might be influencing your mood and energy. You'll learn practical ways to break the cycle and when it's wise to seek professional support.

What Does Anxiety Fatigue Feel Like?

Anxiety fatigue is more than just feeling tired. It often feels like a constant state of being "wired but tired"—you may have racing thoughts, muscle tension, or a sense of restlessness, yet also feel profoundly exhausted and unable to find energy. During the day, you might struggle with brain fog, irritability, or feeling easily overwhelmed. At night, anxiety can keep you from falling asleep or leave you waking up unrefreshed, even after a full night's rest.

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This combination of mental and physical exhaustion can make everyday tasks feel like climbing a mountain. You may feel like your body is running on empty while your mind is running on high. That cycle can be discouraging, but understanding what's happening is the first step toward breaking free.

Why Anxiety and Fatigue Are So Interconnected

Anxiety and fatigue are not separate issues—they're deeply intertwined signals from your body. Chronic anxiety keeps your nervous system in a state of heightened alert, which depletes your physical and emotional reserves. Meanwhile, the persistent drain of fatigue can make it harder for you to manage stress, leaving you more vulnerable to anxious feelings. This creates a self-perpetuating loop: anxiety exhausts you, and fatigue feeds anxiety.

One major link is your body's stress response. When you're anxious, your body releases stress hormones like cortisol. Over time, chronically elevated cortisol can disrupt your sleep, impair your energy production at the cellular level, and even affect your gut health. That's why managing anxiety is key to improving energy—and vice versa.

The Gut-Brain Axis: How Your Digestive Health Affects Your Mood and Energy

Emerging research highlights the gut-brain axis—a two-way communication network between your digestive system and your brain. Your gut is home to trillions of microbes that produce neurotransmitters, like serotonin, which influence mood, anxiety, and energy levels. An imbalance in these gut microbes can disrupt communication with the brain, potentially contributing to both fatigue and anxious feelings.

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Additionally, a healthy gut lining helps keep inflammation in check. When the gut barrier becomes leaky, it can allow harmful molecules into the bloodstream, triggering body-wide inflammation that affects your brain and energy levels. Supporting your gut through diet and targeted testing may help address underlying causes rather than just masking symptoms.

Signs That Anxiety Is Getting Worse

It's helpful to know when anxiety is intensifying so you can take action early. Signs that anxiety may be getting worse include:

Increased worry that is hard to control
Avoiding more situations or activities than usual
Physical symptoms becoming more frequent, such as rapid heartbeat, headaches, or stomach issues
Difficulty concentrating or making decisions
Feeling restless or on edge more often
Sleep problems becoming more severe

If you notice these signs, it may be time to reach out to a healthcare professional or try new coping strategies.

How to Break the Anxiety-Fatigue Cycle

Breaking the cycle between anxiety and fatigue often requires a multi-faceted approach that addresses both your mind and body. Here are practical, evidence-informed strategies:

1. Manage Stress to Calm Your Nervous System

Incorporate stress-reducing practices into your daily routine. Meditation, deep breathing exercises, yoga, or even a short walk can activate your body's relaxation response. These activities help lower cortisol levels and signal to your body that it's safe to rest.

2. Prioritize Sleep Quality

Establish a consistent sleep schedule and aim for 7–9 hours of restful sleep each night. Creating a calming bedtime routine—like turning off screens an hour before bed and keeping your room cool and dark—can significantly improve sleep quality and combat fatigue.

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3. Fuel Your Body with Nutrient-Dense Foods

A balanced diet rich in whole foods supports stable energy and a healthy gut. Include plenty of fiber-rich vegetables, fruits, fermented foods, and omega-3 fatty acids. Avoid excessive caffeine and sugar, which can exacerbate anxiety and lead to energy crashes.

4. Incorporate Gentle Movement

Regular physical activity, such as walking, swimming, or cycling, can boost your mood and energy levels. Exercise increases endorphins and helps regulate stress hormones. Start with just 10-minutes a day if you're feeling exhausted, and gradually increase as your energy improves.

5. Build a Supportive Routine

Having a structured daily routine can reduce anxiety by creating predictability. Set small, achievable goals for each day, and don't forget to schedule breaks and time for activities you enjoy. This helps break the overwhelm that fuels both anxiety and fatigue.

Why Symptoms Alone Don't Reveal the Root Cause

Fatigue and anxiety are like smoke signals—they tell you something is off, but they don't tell you exactly where the fire is. The same symptoms could stem from various underlying factors: stress hormones, sleep disruption, nutrient deficiencies, inflammation, or an imbalanced gut microbiome. Often, multiple factors are at play simultaneously.

That's why relying on symptoms alone can lead to frustration and guesswork. Your doctor might run standard tests and everything comes back "normal," yet you still feel exhausted and anxious. In those cases, digging deeper into your gut health or other functional areas may offer valuable clues.

What a Gut Microbiome Test Can Reveal About Anxiety and Fatigue

The gut microbiome is increasingly recognized as a key factor in both mood and energy. A gut microbiome test, like the InnerBuddies Microbiome Test, analyzes the bacteria, viruses, and fungi in your digestive tract. It can reveal imbalances, such as low microbial diversity or a lack of bacteria that produce beneficial short-chain fatty acids like butyrate. These findings can help you understand how your gut may be influencing your anxiety and fatigue.

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Rather than giving you a diagnosis, a microbiome test offers objective data that can guide personalized dietary and lifestyle choices. For example, if your test shows low butyrate-producing bacteria, you might focus on eating more prebiotic foods to support them. This moves you from generic advice to a more tailored approach.

When to Seek Professional Help

If your fatigue and anxiety are severe, persistent, or affecting your ability to function, it's essential to consult a healthcare provider. They can rule out underlying conditions like thyroid disorders, anemia, sleep apnea, or clinical depression. You should also seek immediate help if you experience red flag symptoms such as chest pain, shortness of breath, or thoughts of self-harm.

This article focuses on persistent, low-grade symptoms where routine testing often provides few answers. In these cases, exploring your gut health with a microbiome test can be a helpful next step. It's a tool to complement—not replace—professional medical care.

Frequently Asked Questions

How do you get rid of anxiety fatigue?

To reduce anxiety fatigue, focus on calming your nervous system and restoring your energy. Practice stress management techniques like deep breathing or meditation, prioritize 7–9 hours of quality sleep, eat nutrient-dense meals, and incorporate gentle exercise. It's also important to address any underlying gut imbalances, as they can affect mood and energy. Start small and be consistent—progress often takes weeks, not days.

What does anxiety fatigue feel like?

Anxiety fatigue feels like a constant state of being mentally wired but physically exhausted. You may have racing thoughts, irritability, and difficulty focusing, paired with low energy, muscle tension, and unrefreshing sleep. It can also involve digestive symptoms like bloating or changes in appetite. It's more than just tiredness—it's a cycle of mental and physical depletion.

What are some signs that anxiety is getting worse?

Signs that anxiety is getting worse include more frequent worry, avoiding activities you used to enjoy, an increase in physical symptoms like rapid heartbeat or stomach issues, difficulty concentrating, and worsening sleep. If you notice these changes, it may be time to seek professional support or adjust your coping strategies.

Become a member of the InnerBuddies community Perform a gut microbiome test every couple of months and view your progress while following-up on our recommendations

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How to break an anxiety cycle?

To break an anxiety cycle, you need to interrupt the loop of anxious thoughts and physical symptoms. Start by grounding yourself in the present moment through deep breathing or a mindful walk. Challenge negative thought patterns and set small, manageable tasks to build confidence. Support your body with good sleep, nutrition, and regular movement. If the cycle persists, consider exploring gut health as a potential factor and seek professional guidance if needed.

Can an imbalanced gut microbiome really cause anxiety?

An imbalanced gut microbiome doesn't "cause" anxiety in a direct way, but it can significantly influence mood and stress levels. Gut microbes produce neurotransmitters like serotonin and GABA that regulate anxiety, and they also affect inflammation and the stress response. Supporting your gut through diet and testing may help improve your mental well-being as part of a broader approach.

What's the difference between 16S and shotgun metagenomic sequencing for a gut test?

16S sequencing profiles bacteria at the genus level and measures overall diversity, while shotgun metagenomics sequences all genetic material to identify species and strains of bacteria, viruses, and fungi, and also reveals functional pathways. Shotgun metagenomics provides a deeper, more comprehensive analysis of your gut ecosystem, which can be more informative for personalized insights.

If I improve my diet, will my fatigue and anxiety improve?

Improving your diet can have a positive impact on both fatigue and anxiety, especially if you increase your intake of fiber-rich, nutrient-dense foods and reduce processed foods and sugar. These changes support your gut microbiome and help stabilize blood sugar, which can improve mood and energy. However, the degree of improvement varies from person to person, and other factors like sleep and stress also play a significant role.

How long does it take to change your gut microbiome?

Your gut microbiome can shift within 24–48 hours of a dietary change, but these changes are often temporary. To achieve stable, long-term improvements in diversity and function, you need to maintain consistent healthy habits—such as a high-fiber diet and adequate sleep—for several weeks or months. Regular testing, like with a gut health membership, can help you track your progress.

Should I stop taking my probiotics or antidepressants before a microbiome test?

Always follow the specific instructions from your test provider. Generally, you may be asked to stop probiotics for 1–2 weeks to see your baseline microbiome. However, do not stop prescribed medications like antidepressants without consulting your healthcare provider. The test is intended to see your microbiome in its typical state, so you should not alter any prescriptions unless instructed.

Become a member of the InnerBuddies community Perform a gut microbiome test every couple of months and view your progress while following-up on our recommendations

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Can microbiome testing diagnose IBS or other diseases?

No, microbiome testing cannot diagnose medical conditions. It can reveal patterns of dysbiosis that are often associated with conditions like IBS, which can be helpful for dietary management. However, a formal diagnosis must be made by a healthcare professional based on clinical evaluation and tests.

What does "low microbial diversity" mean, and why is it important?

Low microbial diversity means your gut has fewer different types of microbes, which is often associated with reduced resilience and increased inflammation. It's been linked to various health issues, including mood disturbances and fatigue. Improving diversity through diet and lifestyle can support both gut and mental health.

Are the recommendations from microbiome test reports personalized?

Yes, reputable companies like InnerBuddies provide personalized dietary and supplement suggestions based on your unique microbiome composition and functional pathways. These recommendations are data-driven, but they should be considered as suggestions to explore with your healthcare provider, not as medical directives.

How often should I retest my gut microbiome?

If you are making significant lifestyle changes, retesting after 3–6 months can help you see the impact. For general monitoring, once a year is usually sufficient. InnerBuddies offers subscription plans designed for longitudinal tracking, which can be valuable for long-term health optimization.