To truly prevent chronic disease, a healthy gastrointestinal tract supporting a balanced gut flora is essential. This foundation of health should be established early in childhood, through the introduction and avoidance of specific foods during critical intestinal development. This seminar is designed to provide practical guidelines for introduction of nutrition during specific organ maturation periods, thus preventing common childhood illnesses including allergies, asthma, eczema, as well as chronic degenerative diseases later in life. In addition, techniques will be discussed for re-establishing and repairing a healthy digestive terrain for those with childhood illness or chronic disease.