it has to do with the back area in the gut known as microbiota. there are trillions in our intestinal tract that help us digest food, regulate weight, and make serotonin. a camel goal -- a chemical that contributes to the feeling of happiness.>> what we found was that diversity of the microbiota, at the first time, it was this -- it was linked to mental health. >> they collected stool samples from 16 women with there microbiota had less potency than other women. as it improved, it helped them with depression and other issues. the study opens up new possibilities for treatment. patients sometimes suffer painful stomach problems when they increase calories. part of the reason many relapse.>> if somebody could manipulate something in my stomach to help with anxiety or the fear to make it easier to gain weight, i would be all about it.>> reporter: britt conway, wach fox news. >>> now the researchers know that the gut bacteria has an impact, now, they can find out if there's an issue with the microbiota. >> a major discovery.>> it can probably help mil

the microbiota is the trillions of bacteria that lives in our digestive tract. each is unique, largely passed from mother to baby during birth. but dr. kellman says the foods we eat can change its makeup. bacteria in the microbiome not only helps us prevent disease and keep us healthy, but it plays a role in reversing disease too. the reason we are suffering from obesity and why so many people can't lose weight is because they are forgetting about the microbiome. eric: the diet includes fermented foods like sauerkraut and kimchi, which contain live, friendly bacteria. vegetables with complex carbohydrates that fuel the microbiome are also on the list, like jicama, jerusalem artichokes, and radishes. the matriarch of the kardashian clan and one of the most famous moms in tinseltown joins ellen. elizabeth: kris jenner talks about the recent mini-series on oj simpson. ellen: did oj ever try to reach out to you at all? kris: right after, yeah. he called me a few times. and, you know wanted to talk and explain how he felt. the whole entire. every single day it was so

we also distract -- disrupt the microbiota. we sat around and said, let's take every single example of emerging disease, one that go pandemic, ones that cause a slow cluster of cases. and let's build a database and analyze it. we started this price -- project, and we thought we were very clever. we got we could do it in a few weeks. it actually took two years. it is not straightforward. the data on where and when a disease first emerges, where the first case of a new disease is, is very hard to get hold of. after a couple of years, we had a database of something like 450 emerging disease events, new pathogens, newsstands that moved into the populations for the first time, or that were already there and began to spread for some reason. we plotted them out. this is a part of that decade by decade, from the 1940's to the 1990's. it is clearly rising, but of course, so is our effort to find them, so we have to correct that. then we have to build a database of every single author of every paper of every infectious disease, to see ho

we also disrupt the microbiota. we sat around and said, let's take every single example of emerging disease, one that go pandemic, ones that cause a slow cluster of cases. and let's build a database and analyze it. we started this price -- project, and we thought we were very clever. we got we could do it in a few weeks. it actually took two years. it is not straightforward. the data on where and when a disease first emerges, where the first case of a new disease is, is very hard to get hold of. after a couple of years, we had a database of something like 450 emerging disease events, new pathogens, newsstands that moved into the populations for the first time, or that were already there and began to spread for some reason. we plotted them out. this is a part of that decade by decade, from the 1940's to the 1990's. it is clearly rising, but of course, so is our effort to find them, so we have to correct that. then we have to build a database of every single author of every paper of every infectious disease, to see ho