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

This prospective study reaffirms that geographical differences in semen quality persist even after adjusting for lifestyle factors or physical activity. This suggests that these habits, on their own, would not account for the variations observed between regions, and that other determinants must be considered, in particular environmental exposures.

In this context, endocrine disruptors could be a particularly relevant hypothesis. These are chemicals found in plastics, pesticides, cosmetics and many everyday products, capable of interfering with the hormonal system even at low doses. The available scientific evidence indicates that exposure to these compounds, particularly during critical stages of development, can have long-lasting effects on male reproductive function.

Although this study does not establish causal relationships nor does it directly assess these exposures, its findings reinforce the need to investigate the role of environmental pollutants in reproductive health in greater depth, using objective biomarkers and more precise study designs.