The Claim
The frequency of the LCT-13910T allele, associated with lactase persistence into adulthood, is 76% in Czech Slavs and 27% in Czech Roma, indicating a difference in allele prevalence between these two populations.
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.
The LCT-13910T allele, which allows adults to digest milk, is found in 76% of Czech Slavs and 27% of Czech Roma.
See the scientific wording
The frequency of the LCT-13910T allele, which enables lactase persistence into adulthood, is significantly higher in Czech Slavs (76%) than in Czech Roma (27%), reflecting distinct genetic histories tied to ancestral dairying practices and migration patterns from South Asia.
People whose ancestors lived in regions where dairy farming was common for thousands of years inherited a genetic change that keeps the lactase enzyme active after infancy. People whose ancestors came from regions without a history of dairy farming did not inherit this change, so their lactase enzyme turns off after weaning.
What the research says
1 studyThe study found that 76% of Czech Slavs can digest milk as adults because of a genetic variant, while only 27% of Czech Roma can—this matches their different ancestral backgrounds: Slavs have lived in Europe with dairy farming for thousands of years, while Roma came from South Asia, where people rarely drank milk.
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.