Diet can help moderate some of the symptons that people eperience from dysbiosis. Eat foods low on the carbohydrate index. This will help keep candida and bad bacteria in check because they both love suger in any form. And when they eat Sugar they multiply and produce toxins that flood the body. The proper care and feeding of our gut flora will be posted later. But, to answwer your question more directly, the only way to restore it is with fecal flora replacement, also known as Human Probiotic Infusion . I will elaborate in more detail later. It took nearly dying and years of research to put together all the pieces. The problem is the medical medical community are the very ones who are making us sick through ignorance. They offer no cure for illness they cause. They don,t understand any of this, though they should. Everthing I have stated has been well documented by science. So the Science is in and doctors keep on killing us through ignorance. What do they tell you if anything when they give you a high powered antibiotic; "eat some yogurt to help repopulate your flora" How absurd.