so if h. pylori can cause stomach cancer, but eliminating it increases rates of asthma, what should we choose? it turns out we may not have to. - i predict that we'll be giving helicobacter pylori back to children so that we can protect them against things like asthma. but we might wanna eradicate it when they're 40 years old so that they won't get stomach cancer. - we have to treat this bug differently in childhood and once you are an adult. - [julia] this revelation shows how we can begin to get the balance right. by treating the microbiome differently at different stages in a person's life, gloria and martin's dynamic approach is the key to eliminating modern diseases. - [futuristic narrator] in the future, nearly every baby is born naturally at home. when c-secons are eded, babiesre batheand infeed with microbes taken from the mother's birth canal. from childhood, everyone receives personalized doses of healthy microbes as regularly as vaccines. only prescribed in severe cases, the overuse of antiotics has plummeted. - [julia] if the key to a disease free future lies in managing th