So, treating leaky gut can be a little controversial, as well as the diagnosis of it. The thought is that people can develop leaky gut, in a pathologic sense, if they've been exposed to toxins, medications, alcohol, stress, radiation therapy, all of those can weaken the intestine and increase permeability.
Treatment of leaky gut can be quite difficult, but there are some dietary interventions that you can take in order to help reduce that intestinal permeability. One is to protect our gut by not taking in too many toxins, removing alcohol from your diet, stress reduction, anti-inflammatory diets have been shown to decrease inflammation in general, thereby helping the permeability. There's also been some discussion about adding glutamine into your diet to help strengthen the intestine, and reduce its permeability.