Furthermore, in the South Asian dataset, we also detected genotype frequencies at six ZTGs (SLC30A3, SLC30A4, SLC30A8, SLS39A7, SLC39A9, and SLC39A11) significantly correlating with zinc deficiency levels in soil as a potential environmental selective pressure, while correcting for population structure. The gene discussed is SLC30A4; the disease is Zinc deficiency.