Leaky gut, also known as increased intestinal permeability, is not a recognized medical diagnosis. Because of this, there’s limited clinical data about the condition, including how long it takes to recover from it. But estimates can be made from research that has explored similar conditions.

For example, a 2005 study from the University of Manitoba studied people with celiac disease, which is often associated with intestinal permeability. Although researchers concluded more research is needed, the study indicated that intestinal permeability was normal for 87 percent of the participants after a year on a gluten-free diet.

Keep reading to learn more about leaky gut, including symptoms, causes, diet recommendations, and tips for prevention.

Your gut, also known as the gastrointestinal tract, includes over 4,000 square feet of intestinal epithelial lining that controls what gets into your bloodstream.

If unhealthy, this lining may be “leaky” with holes or cracks that allow bacteria, toxins, antigens, and partially digested food to penetrate the tissues beneath it.

That can trigger inflammation and changes in the gut flora (normal bacteria), which could lead to problems within your digestive tract and beyond.

Although leaky gut is not recognized by mainstream medical professionals as a condition, it’s generally recognized as a symptom.

According to a 2014 study, the proponents of leaky gut syndrome claim it can cause many health problems, including:

Although not generally accepted as a cause by the medical community as a whole, damage to the intestinal epithelial lining has been associated with the following conditions:

Symptoms of leaky gut may vary depending on the underlying cause. For example:

There are no FDA-approved treatments currently available specifically for leaky gut. The treatment recommendations you’re likely to receive from your doctor will be focused on the underlying condition they’ve diagnosed, which might include leaky gut as a symptom. For example:

Your doctor may recommend adjusting your diet to remove inflammatory foods that could impact gut flora, such as:

  • processed foods
  • high-fat foods
  • high-sugar foods
  • foods that may trigger allergies or sensitivities, such as gluten or dairy
  • alcohol

They may also recommend a low FODMAP diet. This diet is often recommended in people with IBS, but it may help relieve some of your symptoms from leaky gut.

You may also want to try adding foods that contain probiotics and prebiotics. Probiotics and prebiotics can help promote healthy bacteria in your gut. Some examples include:

  • kefir
  • kimchi
  • bananas
  • berries
  • probiotic yogurt

Taking self-care steps that promote overall digestive health may be the best way to protect yourself from leaky gut.

  • Increase your intake of high-fiber foods. The soluble fiber found in vegetables, legumes, and fruit support your gut’s beneficial bacteria, according to a 2016 study.
  • Reduce your intake of refined carbohydrates. Too much sugar can negatively impact gut barrier function, according to a 2014 study.
  • Reduce your use of NSAIDs. Nonsteroidal anti-inflammatory drugs (NSAIDs), such as aspirin, ibuprofen, and naproxen, can increase intestinal permeability, according to a 2009 study.
  • Take probiotic supplements. The beneficial bacteria of probiotics are considered helpful for many gastrointestinal conditions, such as IBS, according to a 2009 study.
  • Reduce your stress levels. Gut bacteria can be harmed by chronic stress, according to a 2017 study.
  • Reduce your alcohol intake. Overindulging in alcohol may increase intestinal permeability, according to a 2014 study.
  • Quit smoking. Tobacco smoke may increase digestive tract inflammation and is a risk factor for a number of bowel conditions, according to a 2013 study.

See a doctor if:

  • Your abdominal pain is causing you concern.
  • Your abdominal pain lasts for more than a few days.
  • You experience persistent heartburn or heartburn that becomes increasingly severe.
  • You experience pain when passing stool.
  • Your discomfort interferes with your daily activities.

Seek emergency medical attention if you experience:

  • severe pain
  • severe abdominal tenderness when touched
  • fever
  • bloody stools
  • abdominal swelling
  • persistent nausea and vomiting

Leaky gut — also known as increased intestinal permeability — is generally recognized as a symptom, not a condition, by mainstream medicine. Most clinical studies have focused on correlation as opposed to cause and effect, which makes it difficult to determine the amount of time needed to heal leaky gut.

The healing time will be based on the underlying condition, such as IBS or IBD, and the time it takes you and your doctor to get that condition under control.

Part of treatment will most likely include lifestyle changes, which are also suggested for reducing your risk of leaky gut. This can include:

  • eating a healthy diet
  • taking probiotics
  • limiting alcohol and NSAIDs
  • reducing stress
  • quitting smoking