The Claim
Among Czech Slavs and Czech Roma populations, the frequency of the lactase persistence allele is similar between individuals who self-report consuming unfermented milk and those who do not.
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.
In both Czech Slavs and Czech Roma, people who drink unfermented milk have the same rate of the lactase persistence gene as people who do not drink it.
See the scientific wording
Among both Czech Slavs and Czech Roma, individuals who self-report consuming unfermented milk have similar frequencies of the lactase persistence allele as those who do not, suggesting that dairy consumption patterns are not strongly determined by genotype within each population.
Whether a person drinks unfermented milk or not does not change how common the gene for digesting lactose is in their body. The gene is passed down from parents and stays the same regardless of what a person eats.
What the research says
1 studyIn both Czech Slavs and Czech Roma, whether people drink fresh milk doesn’t depend on whether they have the gene that lets them digest lactose — even though one group has the gene much more often than the other.
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.