Actually I don't agree with you. Leaky gut is a consecuence of Candida, and candida is nothing more that over toxicity on your whole body due to pollulants and toxic heavy metals.
Therefore you have to stop putting toxins on your body so you have to change diet, remove Amalgams from your mouth, and try to eat as organinc as you can. Also cut Sugar and proceced food. Then you have to start a detoxic program to clear out of your body all toxins collected during your life, not an easy task ehh !!! , It might take you 2 to 3 years of diet and chelation to get your body back to normal.