Questions people ask about Testosteron Kinder

The rs4988235 variant in the MCM6 gene regulates lactase persistence. The A allele (about 50.8% frequency in Europeans) is associated with continued lactase production into adulthood, so genotypes A/A or A/T suggest a higher likelihood of lactose tolerance. The G/G genotype indicates a higher risk of lactose intolerance, but it is not diagnostic – many individuals with G/G still tolerate dairy. Evidence comes from GWAS and observational studies. Caveat: this association is ancestry-specific; other variants exist outside Europe. A DNA test alone cannot diagnose lactose intolerance; clinical testing (e.g., hydrogen breath test) is needed for confirmation.