The Claim
Reduced serum glutathione levels in humans consuming A1 beta-casein are correlated with altered cognitive performance as measured by the Subtle Cognitive Impairment Test (SCIT).
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
People who consume A1 beta-casein and have lower levels of glutathione in their blood show different scores on a test measuring subtle cognitive changes.
See the scientific wording
Reduced serum glutathione levels in humans consuming A1 beta-casein are correlated with changes in cognitive performance as measured by the Subtle Cognitive Impairment Test (SCIT), suggesting a potential link between oxidative stress and cognitive function.
When someone eats A1 beta-casein, their body breaks it down into a peptide called BCM-7. This peptide binds to opioid receptors in the gut and brain, which blocks the absorption of cysteine, a building block needed to make glutathione. Without enough glutathione, oxidative stress builds up in the body. This stress spreads from the gut to the brain through nerve and chemical signals, damaging brain cells and reducing cognitive performance.
What the research says
1 studyPeople who drank milk with A1 beta-casein had lower levels of a protective antioxidant called glutathione, and their cognitive test scores changed slightly. This suggests that this type of milk might affect brain function through oxidative stress.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.