Consumption of A2 milk has positive effect on gastrointestinal system and cognition in pre-schoolers: China study

By Guan Yu Lim

- Last updated on GMT

Consumption of conventional milk induces inflammation in the small intestine ©Getty Images
Consumption of conventional milk induces inflammation in the small intestine ©Getty Images

Related tags Milk A great way to care Lactose intolerance China Cognitive function

A new study has found that replacing conventional milk with A2 milk greatly reduced gastrointestinal symptoms associated with lactose intolerance in Chinese preschool children, and saw improvements in their cognitive performance.

Researchers from Australia and China’s universities compared the effects of five days consumption of conventional milk (containing A1 and A2 β-casein) and A2 milk (contain A2 β-casein only).

Conventional milk increased serum inflammatory and immune biomarkers, as well as an increased cognitive test error rate compared with A2 milk in the pre-schoolers​.”

The findings were published​ in the Journal of Pediatric Gastroenterology and Nutrition​.

Assessment

The study recruited 75 children aged five and six with mild-to-moderate lactose intolerance.

In a double-blind, randomised, controlled, crossover study, subjects enrolled in a 5-day phase 1 intervention of either conventional milk or A2 milk and blood samples were taken.

They consumed the 250mL milk twice daily after a meal. The milk was provided by a2 Infant Nutrition Limited in Shanghai, China.

Subjects then entered a nine-day washout period before switching over to the other milk product for another five days.

Outcome

The primary outcome of the study found consumption of conventional milk induced a significant increase (p<0.0001) in gastrointestinal symptoms compared to A2 milk, while A2 milk reduced biomarkers of inflammation.

Researchers said, “These results are also similar to those from a study by Ul Haq and colleagues, who reported that consumption of A1 β-casein induced an inflammatory response by activating the Th2 pathway in a mouse model.​”

Faecal matters

The researchers also found that after five days of A2 milk consumption, there were significantly higher mean faecal concentrations of acetic acid, butanoic acid, and total short-chain fatty acids SCFA, when compared with consuming conventional milk.

This is relevant because SCFAs are fermentation products of gut microbiota, with reported anti-inflammatory properties, able to amplify colonic cell function​,” researchers added.

These results are consistent with previous observations in adults that conventional milk reduces SCFA levels and impairs colonic health​.”

In this study, consumption of conventional milk was associated with a significantly higher stool frequency and significantly higher Bristol Stool Scale scores compared with the consumption of A2 milk.

They cited the similarity in adults, “The study by Jianqin and colleagues revealed longer gastrointestinal transit times, softer stools, and a greater incidence of diarrhoea, when adults consumed conventional milk​.”

These data suggest that exclusion of A1 β-casein may help alleviate adverse gastrointestinal symptoms​.”

Cognitive function

The researchers also found that the pre-schoolers performed better in a Subtle Cognitive Impairment Test after consumption of A2 milk.

They noted improved accuracy and results in both automatic and attentional processes.

These data suggest that consumption of A2 milk has a positive effect not only on the gastrointestinal system, but also on cognition in pre-schoolers.

Conclusion

The researchers concluded: “We report that conventional milk induces an inflammatory state that exacerbates the symptoms of digestive discomfort associated with lactose intolerance​.

Consumption of A1 β-casein induces inflammation in the small intestine. A2 β-casein, however, has a much slower rate of proteolytic digestion; therefore, its consumption results in a much lower yield of BCM-7​.

This exacerbation can be reduced by removal of A1 β-casein (via replacement with A2 β-casein), with subsequent improvement in gastrointestinal symptoms and aspects of cognitive function​.”

 

Source: Journal of Pediatric Gastroenterology and Nutrition

DOI : 10.1097/MPG.0000000000002437

Effects of conventional milk vs milk containing only A2 β-casein on digestion in Chinese children: a randomized study

Authors: Xiaoyang Sheng, et al.

Related news

Show more

Related products

show more

Krill oil supports six key areas of healthy aging

Krill oil supports six key areas of healthy aging

Content provided by Aker BioMarine | 26-Feb-2024 | White Paper

The global population is getting older—according to WHO by 2050 the world’s population over 60 years will double and the population above 80 years will...

Nootropics Report 2.0: Brain Health Insights

Nootropics Report 2.0: Brain Health Insights

Content provided by dsm-firmenich | 22-Feb-2024 | Insight Guide

The brain health market is constantly growing and evolving, with more consumers looking for innovative ways to support total mind and body wellness.

Revolutionizing Brain Health with BioKesum®

Revolutionizing Brain Health with BioKesum®

Content provided by Biotropics Malaysia | 20-Feb-2024 | Data Sheet

Revitalize the nootropic industry with new clinically proven herbal extract from Kesum leaves shown to improve executive memory, mood and brain markers...

Pycnogenol® Supports Cognitive Function at Any Age

Pycnogenol® Supports Cognitive Function at Any Age

Content provided by Horphag Research | 07-Feb-2024 | White Paper

Clinical research shows daily supplementation with Pycnogenol® French maritime pine bark extract may help support brain function in a variety of age groups...

Related suppliers

Follow us

Products

View more

Webinars

Nutra Champions Podcast

Nutra Champions Podcast