Trial reportNutrients2020
Milk Containing A2 β-Casein ONLY, as a Single Meal, Causes Fewer Symptoms of Lactose Intolerance than Milk Containing A1 and A2 β-Caseins in Subjects with Lactose Maldigestion and Intolerance: A Randomized, Double-Blind, Crossover Trial.
Trial report in Nutrients, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 3 registered trials, which are not on this map. Cited by 30 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Comparing the Gastric Transit of Commercial Milk Containing A1 Beta-casein and A2 Milk Containing Only A2 Beta-casein Using Magnetic Resonance Imaging (MRI)
Comparing the Acute Effects of A1 Containing Commercial Milk and A2 Milk on Inflammation, Lactose Intolerance and Lactose Maldigestion in Lactose Maldigesters
Comparing Inflammation, Lactose Intolerance and Lactose Maldigestion in Lactose Maldigesters on Consumption of Commercial Milk Containing A1 and A2 Beta-Casein and A2 Milk Containing Only A2 Beta-Casein for Two Weeks
Who cites it
30 citing papers in PubMed, 59 citations in OpenAlex.
- Trial
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- Ex Vivo Immune Response of Casein-Sensitized Lymphocytes to Bovine Milk Protein Composite Genotypes: Beyond the β-Casein A1/A2 Paradigm.Nutrients · 2026Article
- KetoFLEX 12/3 Diet and Cognitive Health: A Precision-Nutrition Perspective on Mechanisms, Emerging Evidence, and Future Directions.Nutrients · 2026Review
- β-Casein Polymorphism as a Potential Evolutionary Trade-Off: The Rise of A1 Under Intensive Selection and Its Implications for Gastrointestinal Tolerance and Agroecological Resilience.Veterinary sciences · 2026Review
- Article
- Article
- Transcriptomic profiling of milk fat globules in cows with different β-casein genotypes.Scientific reports · 2025Article
- Cow milk protein allergy mimics in infancy.World journal of clinical pediatrics · 2025Review
- Dietary Supplement with Milk that Contains Different β-Caseins Influences Gut Microbiota and Serum Metabolites in Mice.Food science of animal resources · 2025Article
- Exploring exhaled breath biomarkers for lactose intolerance diagnosis: the Lactobreath pilot study protocol.BMJ open · 2025Article
- Effects of Different Cow-Milk Beta-Caseins on the Gut-Brain Axis: A Narrative Review of Preclinical, Animal, and Human Studies.Nutrition reviews · 2025Review
- The vision of big data recirculation for smart livestock farming in South Korea.Journal of animal science and technology · 2025Review
- A2 Milk: The Impact of Genetic Variation in Milk Protein on Human Health.Current protein & peptide science · 2025Review
- The Effect of A2 Milk on Gastrointestinal Symptoms in Comparison to A1/A2 Milk: A Single-center, Randomized, Double-blind, Cross-over Study.Journal of cancer prevention · 2024Article
- BCM-7: Opioid-like Peptide with Potential Role in Disease Mechanisms.Molecules (Basel, Switzerland) · 2024Review
- Microproteomic-Based Analysis of the Goat Milk Protein Synthesis Network and Casein Production Evaluation.Foods (Basel, Switzerland) · 2024Article
- A2 milk consumption and its health benefits: an update.Food science and biotechnology · 2024Review
- An A2 β-casein infant formula with high sn-2 palmitate and casein phosphopeptides supports adequate growth, improved stool consistency, and bone strength in healthy, term Chinese infants: a randomized, double-blind, controlled clinical trial.Frontiers in nutrition · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
Acute-feeding and multiple-day studies have demonstrated that milk containing A2 β-casein only causes fewer symptoms of lactose intolerance (LI) than milk containing both A1 and A2 β-caseins. We conducted a single-meal study to evaluate the gastrointestinal (GI) tolerance of milk containing different concentrations of A1 and A2 β-casein proteins. This was a randomized, double-blind, crossover trial in 25 LI subjects with maldigestion and an additional eight lactose maldigesters who did not meet the QLCSS criteria. Subjects received each of four types of milk (milk containing A2 β-casein protein only, Jersey milk, conventional milk, and lactose-free milk) after overnight fasting. Symptoms of GI intolerance and breath hydrogen concentrations were analyzed for 6 h after ingestion of each type of milk. In an analysis of the 25 LI subjects, total symptom score for abdominal pain was lower following consumption of milk containing A2 β-casein only, compared with conventional milk (
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.