Reacción a "Geographical differences in semen quality in Spain are not linked to men’s lifestyle habits"

The study is interesting, but I think it is still too early to conclude that it demonstrates regional differences in sperm quality throughout Spain without taking into account many other lifestyle-related factors that were not considered in this study. I think it is an interesting starting point, and I congratulate the authors on this study, but given the data, I believe the statistical analysis should account for other potential confounding factors that may vary by region.