A1 vs A2 Milk: How Beta-Casein Type Affects Opioid Peptide Release and Human Health
A1 and A2 beta-casein variants release different amounts of the opioid peptide beta-casomorphin-7 during digestion, with A1 casein (BCM-7 releasing) potentially linked to health effects including GI discomfort and immune modulation.
Quick Facts
What This Study Found
A1 beta-casein releases more beta-casomorphin-7 (BCM-7) during digestion than A2, with BCM-7 showing opioid, immunomodulatory, and GI effects that may explain the health differences attributed to A1 versus A2 milk consumption.
Key Numbers
How They Did This
review study on opioid-peptides, bioactive-food-peptides.
Why This Research Matters
Relevant for opioid-peptides, bioactive-food-peptides.
The Bigger Picture
Advances peptide research.
What This Study Doesn't Tell Us
See abstract.
Questions This Raises
- ?Further research needed.
- ?Clinical translation to evaluate.
Trust & Context
- Key Stat:
- Key finding A1 beta-casein releases more beta-casomorphin-7 (BCM-7) during digestion than A2, with BCM-7 showing opioid, immunomodulatory, and GI effects that may
- Evidence Grade:
- preliminary evidence.
- Study Age:
- Published in 2007.
- Original Title:
- Polymorphism of bovine beta-casein and its potential effect on human health.
- Published In:
- Journal of applied genetics, 48(3), 189-98 (2007)
- Authors:
- Kamiński, Stanisław, Cieslińska, Anna, Kostyra, Elzbieta(2)
- Database ID:
- RPEP-01249
Evidence Hierarchy
Summarizes existing research on a topic.
What do these levels mean? →Frequently Asked Questions
What was studied?
A1 vs A2 Milk: How Beta-Casein Type Affects Opioid Peptide Release and Human Health
What was found?
A1 and A2 beta-casein variants release different amounts of the opioid peptide beta-casomorphin-7 during digestion, with A1 casein (BCM-7 releasing) potentially linked to health effects including GI discomfort and immune modulation.
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Cite This Study
https://rethinkpeptides.com/research/RPEP-01249APA
Kamiński, Stanisław; Cieslińska, Anna; Kostyra, Elzbieta. (2007). Polymorphism of bovine beta-casein and its potential effect on human health.. Journal of applied genetics, 48(3), 189-98.
MLA
Kamiński, Stanisław, et al. "Polymorphism of bovine beta-casein and its potential effect on human health.." Journal of applied genetics, 2007.
RethinkPeptides
RethinkPeptides Research Database. "Polymorphism of bovine beta-casein and its potential effect ..." RPEP-01249. Retrieved from https://rethinkpeptides.com/research/kaminski-2007-polymorphism-of-bovine-betacasein
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkPeptides research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.