As part of the long-term study PASTURE held about 1,000 mothers nutrition and health of their child until the first week of life firmly. "Children who drank untreated cow's milk, a significantly lower risk of colds, respiratory infections, fever and ear infections as children had the commercially highly heated milk drinking," says Dr. George Loss by Dr. von Hauner Children's Hospital of LMU and first author of the publication. Your risk of developing some of respiratory infections, decreased by up to 30 percent. This effect has weakened somewhat when the milk was heated by the parents. Pasteurized milk is heated industrial, protected before febrile illness, while this effect at H-milk no longer existed. The results are according to the study, regardless of other possible factors such as the child's diet.
Protection detectable in the blood
"The protective effects of different milk types probably based on certain heat-sensitive ingredients of milk. Especially with respiratory tract infections and otitis media ingredients seem that occur in raw milk, but not in heated milk to play a major role," said Loss.
At the age of twelve months, the children were bled, which was studied immunologically. Infants who drank raw milk had lower normal values ??of inflammation parameters CRP (C-reactive protein) that gives doctors information about inflammation in the body. "Increased inflammatory markers are associated with the development of chronic diseases such as asthma and obesity, as is known from other studies. The consumption of raw milk could reduce the risk therefore of developing asthma later on," said Loss.
In the industrial processing of milk is heated, for pasteurization at temperatures 72-75 Celsius degrees, in the manufacture of long-life milk to temperatures around 135 degrees Celsius. In addition, the milk is homogenized to distribute the fat and does not form a cream. "At the consumption of raw milk caution," said Loss. Untreated milk as raw milk can be contaminated with bacteria and cause various diseases such as listeriosis, tuberculosis and EHEC (enterohaemorrhagic Escherichia coli) based diarrhea and severe renal impairment. The researchers therefore encourage you to develop new methods in industrial milk processing: "Through new gentle method a perfectly safe milk product could be produced, which still contains the protective components of raw milk, but not the disease-causing micro-organisms," said Loss.
Advantages of rural life
Cow milk fat and carbohydrates in addition provides proteins that can influence the immune system. "The composition of cow's milk and breast milk is very similar in many aspects," said Loss. It has long been known that breastfeeding protects children from infection. The mechanisms, such as parent or cow's milk affect the immune system of the child, to protect against infection, are still unclear. Possibilities include that ingredients act directly with viruses or that they have an influence on the intestinal flora, causing the immune system to develop positively.
The administration of cow's milk is now controversial because infants and young children can also be allergic to it. In the PASTURE study until the first birthday had only two percent of children allergic to cow's milk or other foods.
The positive effects of rural life on the immune system have been confirmed in several studies. "Children who grow up on a traditional farm with dairy cattle are best protected against allergic reactions", Erika von Mutius summarizes the results achieved so far.
At the PASTURE study involved 1,000 pregnant women from rural areas in Bavaria, Finland, France, Switzerland and Austria, about half of whom live on farms. Your children are up to the age of ten scientific support to study the environmental effects on the development of asthma and allergies. The diet of mothers during pregnancy was considered. In addition to the LMU are the German Centre for Lung Research and the Universities of Ulm, Marburg, Basel, Helsinki, Kuopio (Finland) and Besançon (France) involved, as well as scientists from the children's hospitals in St. Gallen andSchwarzach (Austria).