"Maturation of the gut microbiome during the first year of life contributes to the protective farm effect on childhood asthma"
(aus Nature Medicine vom 11/2020)

https://rdcu.be/b9ByA

Growing up on a farm is associated with an asthma-protective effect, but the mechanisms underlying this effect are largely unknown. In the Protection against Allergy: Study in Rural Environments (PASTURE) birth cohort, we modeled maturation. [...]

"Inverse association of farm milk consumption with asthma and allergy in rural and suburban populations across Europe."
(aus PubMed vom 05/2007)

https://www.ncbi.nlm.nih.gov/pubmed/17456213/

Dietary interventions as a means for atopy prevention attract great interest. Some studies in rural environments claimed an inverse association between consumption of farm-produced dairy products and the prevalence of allergic diseases, but current evidence is controversial. [...]

"Effect of Processing Intensity on Immunologically Active Bovine Milk Serum Proteins"
(aus Nutrients von 2017)

https://www.mdpi.com/2072-6643/9/9/963/htm

Consumption of raw cow’s milk instead of industrially processed milk has been reported to protect children from developing asthma, allergies, and respiratory infections. Several heat-sensitive milk serum proteins have been implied in this effect though unbiased assessment of milk proteins in general is missing. [...]

"The protective effect of farm milk consumption on childhood asthma and atopy: the GABRIELA study."
(aus PubMed vom 10/2011)

https://www.ncbi.nlm.nih.gov/pubmed/21875744

Farm milk consumption has been identified as an exposure that might contribute to the protective effect of farm life on childhood asthma and allergies.  [...]

"Consumption of unprocessed cow's milk protects infants from common respiratory infections"
(aus jacionline vom 01/2015)

https://www.jacionline.org/article/S0091-6749(14)01274-3/fulltext

Breast-feeding is protective against respiratory infections in early life. Given the co-evolutionary adaptations of humans and cattle, bovine milk might exert similar anti-infective effects in human infants. [...]