The phathalates hypothesis sounds plausible to me. However, it will be a combination of factors social, economical and biological. One hypothesis, I have been t

The phathalates hypothesis sounds plausible to me. However, it will be a combination of factors social, economical and biological. One hypothesis, I have been thinking of is about relation between the age of the father when the child was conceived and it's correlation with sperm count of the child when he grows up. I am not sure if this data was collected in the study. Does anyone know about any such study?