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Did you Know? Drinking Unprocessed Cow Milk Prevents Asthma Did you Know? Drinking Unprocessed Cow Milk Prevents Asthma
Significant reduction of risk for developing childhood-onset asthma is related to continuous consumption of unprocessed cow’s milk, according to researchers. It is known that... Did you Know? Drinking Unprocessed Cow Milk Prevents Asthma

Significant reduction of risk for developing childhood-onset asthma is related to continuous consumption of unprocessed cow’s milk, according to researchers. It is known that living on a farm provides natural preventative measures against development of allergies and asthma. This is observed as the “farm effect.” The “farm effect” includes contact with animal feed, visits to animal sheds, and consumption of unprocessed farm milk.

Researchers were interested in isolating and determining the effect of the difference in the fatty acid composition of unprocessed farm milk compared to heat treated shop milk, and whether or not continuous farm milk consumption carried independent asthma-protective properties, since its benefits alone could crossover to a non-farming community.

They found that the milk effect is independently asthma-protective, irregardless of other allergen-protective farm-related exposures.

This is significant because it means that children not living on a farm are able to receive one of the benefits of this “farm effect” through consumption of unprocessed cow’s milk. The higher fat content found in farm milk is explained as part of the positive asthma-protective effect.

To evaluate the role of specific components of milk fat, samples of milk usually consumed by both healthy control subjects and children with asthma were assessed for their fatty acid composition in a nested case-control design.

Types of Milk Samples Assessed

  • shop milk – any type of cow’s milk one could buy from a supermarket or shop
  • farm milk – cow’s milk obtained directly from a traditionally husbanded farm
  • unprocessed farm milk – farm milk without any prior boiling before consumption
  • boiled farm milk – farm milk usually boiled prior to consumption

 

Disentangling the Milk Differences
Full-fat Milk is Healthier

An aim of the researchers’ analysis was to measure the farm milk effect with respect to the individual procedures used in processing industrial milk. Heating and fat content both exert independent and powerful effects on asthma. They found that when one chose to consume boiled farm milk over unprocessed farm milk, the choice inarguably mattered to ones health.

stated,

“Moreover, adjustment for fat content weakened the effect of unprocessed farm versus shop milk on asthma substantially. This corresponds well to previous findings of inverse associations between asthma and the consumption of butter or full-fat farm milk.”

Higher omega-3 polyunsaturated fatty acids levels and a lower omega-6/omega-3 ratio in unprocessed milk compared with industrially processed milk is largely responsible for the positive effect of fat content.

Asthma-Protective Effect Increases Over Time

According to the researchers,

“The effects on asthma of drinking unprocessed farm versus shop milk, unprocessed versus boiled farm milk, or high-fat versus low-fat milk tended to increase with age…

Regular unprocessed milk consumption was inversely related to asthma onset by age 6 years. The association was stronger with recent exposure compared with exposure in early childhood. This protective effect of native milk was explained partly by absent heating and partly by a higher fat content.”

The researchers also noted,

“Recent consumption of farm milk seems to be more relevant than consumption in the first years of life, which extends the concept of early prevention to sustained prevention until school age and beyond.”

Anti-inflammatory Treatment for Subclinical Asthma

Conclusion

The researchers explained,

“The major strength of this analysis is the longitudinal study design, with several points of exposure assessment before determining the outcome based on a physician’s diagnosis.”

In summary, the data obtained by the PASTURE study was able to demonstrate that “continuous consumption of unprocessed farm milk contributes to protection from childhood-onset asthma.” Significantly, that effect is related to the higher omega-3 polyunsaturated fatty acids content that is found in unprocessed cow’s milk.

The desirable omega-6/omega-3 ratio in cow’s milk may change the equilibrium of eicosanoid synthesis to anti-inflammatory rather than pro-inflammatory mediators. Consequently, the farm milk effect evidently, in part, consists of an anti-inflammatory treatment of subclinical asthma.

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