Can Anxiety Cause Diarrhea and Other Digestive Issues?


Anxiety can be a debilitating condition that affects millions of people worldwide. Not only does it impact mental health, but it can also cause physical symptoms, such as diarrhea and other gastrointestinal issues. If you’re experiencing anxiety-induced diarrhea, you may be looking for ways to manage and prevent these symptoms from occurring in the future. 

In this blog post, we’ll explore the connection between anxiety and stress-related diarrhea and the importance of addressing your nervous system health for lasting relief from your symptoms. If you’re tired of feeling trapped by anxiety and its physical manifestations, keep reading to learn more.

Can Anxiety Cause Diarrhea? 

Yes, anxiety can cause diarrhea. The brain-gut connection means that stress and anxiety can impact gut function and lead to physical symptoms like diarrhea. 

Have you ever been in a situation where you felt anxious or stressed, and suddenly your stomach feels like it was in knots? That’s because there’s a strong connection between our emotions and our gut health. Research has shown that stress and anxiety can have a direct impact on our digestive system, leading to uncomfortable symptoms like diarrhea.

When we experience stress or anxiety, our bodies enter a “fight or flight” response, which triggers the release of hormones like adrenaline and cortisol. These hormones prepare us to react quickly to a perceived threat, like running away from a predator or fighting off an attacker. However, in modern-day life, we often experience this response in situations that don’t require physical activity, like public speaking or a job interview.

The problem is that the fight-or-flight response also affects our digestive system. When we’re in this state, blood flow is redirected away from our digestive tract and organs and toward our muscles and brain. This can cause a decrease in digestive secretions and muscle contractions, leading to symptoms like diarrhea or constipation.

Additionally, the stress hormones released during the fight or flight response can disrupt the delicate balance of beneficial bacteria in our gut, which can also contribute to diarrhea and other gastrointestinal issues.

The Powerful Connection Between the Brain and Gut: Understanding the Brain-Gut Axis and Its Impact on Our Health

There’s a powerful connection between our brain and gut. This connection is known as the brain-gut axis, and it is responsible for the constant communication between our central nervous system and our gastrointestinal system. The gastrointestinal (GI) tract is regulated by a complex network of neurons known as the enteric nervous system (ENS), which communicates with the central nervous system (CNS) through the brain-gut connection. 

The CNS, consisting of the brain and spinal cord, communicates bidirectionally with the ENS through the vagus nerve and other pathways. This connection means that psychological factors such as stress and anxiety can affect gut function, while GI symptoms can impact mental health.

When we experience stress or anxiety, the sympathetic nervous system regulates our body’s fight-or-flight response, triggering a series of physiological changes. These changes can also affect the digestive system, leading to symptoms such as diarrhea, nausea, and abdominal pain.

Research has also shown that the gut microbiome, the community of microorganisms that inhabit our gut, can influence our brain and behavior by producing substances such as neurotransmitters and hormones. These substances can impact our mood, cognition, and immune system.

By understanding the brain-gut connection, we can better manage conditions that affect both the mind and the gut, such as irritable bowel syndrome (IBS), anxiety, and depression.

Symptoms of Anxiety And How Do You Know If You Have It

According to the World Health Organization (WHO), anxiety disorders are the most common mental health condition worldwide, affecting around 275 million people. In the United States alone, it affects 40 million adults aged 18 and older, which is about 19.1% of the population. These statistics highlight the significant impact of anxiety on a large portion of the population and the need for increased awareness and access to effective treatment options.

Symptoms of anxiety can vary but typically include feelings of nervousness, restlessness, or worry that are difficult to control. Physical symptoms can also be present, such as sweating, trembling, rapid heartbeat, and difficulty breathing. Other symptoms may include difficulty sleeping, fatigue, and irritability.

How Do I Know If My Diarrhea Is Caused by Anxiety?

It can be challenging to determine if your frequent diarrhea is caused by anxiety, as there are many possible causes of diarrhea, including infections, medications, and dietary changes. However, if you experience diarrhea during or immediately following a period of high stress or anxiety, it may be a sign that your gut is reacting to the emotional distress. Additionally, if you have a history of anxiety or other mental health conditions and experience frequent bouts of diarrhea, it may be worth discussing this with your healthcare provider. They can help rule out other potential causes.

Who Is at Risk for Anxiety-Induced Diarrhea? Exploring Genetics, Lifestyle, and Health Conditions

Anyone who experiences anxiety or stress can be at risk for anxiety-induced diarrhea. However, some people may be more susceptible to this type of reaction due to their genetics, lifestyle, or underlying health conditions. 

For example, individuals with a history of gastrointestinal disorders or irritable bowel syndrome (IBS) may be more prone to experiencing diarrhea during times of stress or anxiety. Similarly, people with a family history of anxiety or mood disorders may also be at increased risk. Additionally, lifestyle factors such as poor diet, lack of exercise, and inadequate sleep can increase the likelihood of experiencing anxiety-induced diarrhea.

People with a dysregulated nervous system may also be at increased risk of anxiety-induced diarrhea. A dysregulated nervous system can cause a heightened and prolonged stress response, making it more difficult for the body to regulate its physiological processes. This can lead to a variety of gastrointestinal symptoms, including diarrhea, bloating, and abdominal pain.

How can I manage my diarrhea symptoms in the short term?

If you are experiencing diarrhea as a result of anxiety, there are several steps you can take to manage your symptoms and treat diarrhea in the short term:

  • Stay hydrated: Diarrhea can cause dehydration, so it’s important to drink plenty of fluids, such as water, clear broth, or electrolyte replacement drinks like Pedialyte. Avoid alcohol and caffeine, as they can worsen dehydration.
  • Follow a BRAT diet: Eating bland, low-fiber foods can help reduce diarrhea symptoms. The BRAT diet consists of bananas, rice, applesauce, and toast.
  • Take over-the-counter medication: Anti-diarrheal medication such as loperamide (Imodium) can help slow down diarrhea and provide relief. Be sure to follow the recommended dosage and check with your healthcare provider if you have any underlying health conditions.
  • Practice good hygiene: Wash your hands thoroughly with soap and water before and after using the bathroom to prevent the spread of germs and infection.
  • Manage stress and anxiety: Engage in relaxation techniques to help reduce stress and anxiety, which can contribute to diarrhea.

It’s important to note that these tips are intended for short-term symptom management. If you continue to experience chronic diarrhea or other symptoms, it’s important to solve the root cause of it, which we’ll discuss below.

How Long Does Anxiety Diarrhea Last?

The duration of anxiety-induced diarrhea can vary depending on the individual and the severity of their anxiety. In some cases, it may resolve quickly once the anxiety has passed, while in other cases, it may persist for several hours or days.

How do I get rid of my anxiety and diarrhea for good?

Anxiety can cause physical symptoms such as diarrhea, and it’s important to address the root cause of the anxiety to find relief from these symptoms. Oftentimes, the root cause of anxiety is a dysregulated nervous system. By addressing and healing this root cause, it’s possible to achieve lasting relief from anxiety and its physical symptoms.

A dysregulated nervous system can be caused by a variety of factors, including chronic stress, trauma, and lifestyle factors such as poor diet and lack of exercise. When the nervous system is dysregulated, the body’s stress response becomes overactive, leading to symptoms such as anxiety, depression, and physical symptoms like gastrointestinal issues, skin conditions, chronic pain or illness, and chronic tension in the body.

The good news is that it’s possible to regulate the nervous system and restore balance to the body’s stress response. By learning techniques to regulate the nervous system, you can reduce the frequency and intensity of anxiety and its physical symptoms. By incorporating these techniques into your daily routine, you can build resilience and reduce the impact of stress on your body.

At Heal Your Nervous System, we offer a program that teaches these techniques and provides structure and support for individuals looking to heal their dysregulated nervous system and find lasting relief from anxiety and it’s physical symptoms. Our program is based on the latest neuroscience research and offers a holistic approach to healing that addresses the root cause of anxiety and physical symptoms.

Through our program, you can understand your sensitivity profile, learn how to regulate your nervous system, reduce anxiety, build resilience, and cultivate mindfulness in your daily life. We provide personalized support and guidance to help individuals overcome their anxiety and achieve lasting relief from physical symptoms.

If you’re struggling with anxiety-induced diarrhea, we encourage you to join our waitlist and learn more about our program. By taking the first step towards healing your nervous system, you can find lasting relief from anxiety and its physical symptoms.


In conclusion, anxiety can cause digestive issues, such as diarrhea, nausea and stomach aches. Anxiety is a powerful force that can have an effect on many areas of the body due to its connections with the brain-gut axis. It is important to be aware of symptoms of anxiety in order to determine if it is the cause of your digestive problems, particularly if you fall into higher-risk categories. 

While short-term management of diarrhea symptoms is possible, learning how to heal your anxiety from the root is necessary for long-term relief from symptoms. By understanding the power of anxiety and utilizing methods such as nervous system regulation, you can regain control over your body and reclaim your health for good!

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Dr. Linnea Passaler

Dr. Linnea Passaler

Dr. Linnea Passaler has dedicated 20+ years to serving patients, first to a small number of individuals as a successful surgeon and then to thousands of people worldwide as the CEO of a digital health startup. After overcoming her own struggles with a dysregulated nervous system, she created Heal Your Nervous System (HYNS) to empower others in their healing journey. Her combination of neuroscience and somatic work helps those struggling with overwhelm, trauma, burnout, and anxiety to heal their dysregulated nervous systems and thrive.