Dr. Francisco Guarner, member of the Physiology and Pathophysiology of the Digestive Tract group at Vall d’Hebron Institut de Recerca (VHIR) and coordinator in Spain of the European project "http://www.vhir.org/salapremsa/mitjans/mitjans_detall.asp?Idioma=en&mv1=5&mv2=1&mh1=0&mh2=0&mh3=0&mh4=0&ms=0&any=2012&num=106" "http://www.vhir.org/salapremsa/mitjans/mitjans_detall.asp?Idioma=en&mv1=5&mv2=1&mh1=0&mh2=0&mh3=0&mh4=0&ms=0&any=2012&num=106" MetaHIT, talks in an interview published in the newspaper "http://www.vhir.org/global/pdf/noticies/biodiversitat%20lv.pdf" "http://www.vhir.org/global/pdf/noticies/biodiversitat%20lv.pdf" La Vanguardia about the bacteria that live in our intestines.In the interview, Dr. Guarner alerts that “there is a lack of biodiversity in our intestines”, and denies the myth of the ideality of a germ-free world: “Combating harmful bacteria, he have also removed some of the beneficial, especially among those that form the intestinal flora”, reports, thereby increasing risk of disease. To improve the intestinal flora and maintain contact with beneficial bacteria, VHIR's researcher recommends a diet rich in fiber. For the little ones, "living with dog at home, visiting farms, going to the mountain... all these activities seem to be good for the intestinal flora of children", he concludes.