The Gut / Brain Connection

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It’s really not a joke! There is such a thing as the gut-brain connection and studies show that it can link a range of emotional responses to the stomach and vice versa.   Take a moment to reflect…have you ever known that something is right because you “trusted your gut”? Ever had a “gut-wrenching” experience? Do certain situations make you “feel nauseous”? Have you ever felt “butterflies” in your stomach? We use these expressions for a reason. The gastrointestinal tract is sensitive to emotion. Anger, anxiety, sadness, elation — all of these feelings (and others) can trigger symptoms in the gut.

The brain has a direct effect on the stomach and intestines. For example, the very thought of eating can release the stomach’s juices before food gets there. This connection goes both ways. A troubled intestine can send signals to the brain, just as a troubled brain can send signals to the gut. Therefore, a person’s stomach or intestinal distress can be the cause or the product of anxiety, stress, or depression. That’s because the brain and the gastrointestinal (GI) system are intimately connected.

This is especially true in cases where a person experiences gastrointestinal upset with no obvious physical cause. For such functional GI disorders, it is difficult to try to heal a distressed gut without considering the role of stress and emotion.

Gut Health and Anxiety

Considering how closely the gut and brain interact, it is easier to understand why you might feel nauseous before giving a presentation or feel intestinal pain during times of stress. However, that doesn’t mean that functional gastrointestinal conditions are imagined or “all in your head.” Psychology combines with physical factors to cause pain and other bowel symptoms. Psychosocial factors influence the actual physiology of the gut, as well as symptoms. In other words, stress (or depression or other psychological factors) can affect movement and contractions of the GI tract, make inflammation worse, or perhaps make you more susceptible to infection.

In addition, research suggests that some people with functional GI disorders perceive pain more acutely than other people do because their brains are more responsive to pain signals from the GI tract. Stress can make the existing pain seem even worse.

Based on these observations, you might expect that at least some patients with functional GI conditions might improve with therapy to reduce stress or treat anxiety or depression. And sure enough, a review of 13 studies showed that patients who tried psychologically based approaches had greater improvement in their digestive symptoms compared with patients who received only conventional medical treatment.

Gut-brain connection, anxiety and digestion

Are your stomach or intestinal problems — such as heartburn, abdominal cramps, or loose stools — related to stress? Watch for these other common symptoms of stress and discuss them with your doctor. Together you can come up with strategies to help you deal with the stressors in your life, and also ease your digestive discomforts.

Physical Symptoms

  • Stiff or tense muscles, especially in the neck and shoulders
  • Headaches
  • Sleep problems
  • Shakiness or tremors
  • Recent loss of interest in sex
  • Weight loss or gain
  • Restlessness

Behavioural Symptoms

  • Procrastination
  • Grinding teeth
  • Difficulty completing work assignments
  • Changes in the amount of alcohol or food you consume
  • Taking up smoking, or smoking more than usual
  • Increased desire to be with or withdraw from others
  • Rumination (frequent talking or brooding about stressful situations)

Emotional Symptoms

  • Crying
  • Overwhelming sense of tension or pressure
  • Trouble relaxing
  • Nervousness
  • Quick temper
  • Depression
  • Poor concentration
  • Trouble remembering things
  • Loss of sense of humor
  • Indecisiveness

We’ll look at ways to manage daily stressors in future posts and how we can modulate the gut-brain axis too.

Stay Wild!

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