What a great question and the simple answer is YES!
Modifications to your diet may directly reduce inflammation, which may reverse the effects of a leaky gut. When you eliminate foods that cause inflammation you may decrease your unwanted symptoms as well as increase your body's ability to heal, especially the gut!
You can alleviate inflammation FIRST by eliminating certain foods from your diet. Foods like dairy, gluten, corn, soy, alcohol, pork, and sugar are commonly known to cause inflammatory symptoms. And SECOND, adding anti-inflammatory foods can also help alleviate leaky gut. Some examples are berries, fatty fish, broccoli, cinnamon, turmeric, ginger, and green tea.
One effective approach is the Elimination Diet. This is a 30-day commitment to eliminating inflammatory foods followed by a reintroduction of those foods, one at a time, while tracking any reactions. This diet not only decreases inflammation, it also gives the gut a chance to heal and enhances your awareness to foods that have an inflammatory effect on your unique body :)