4 ms·
This is just an well established fact. Sperm count in industrialized nations have dropped considerably over decades. https://www.ncbi.nlm.nih.gov/pubmed/139307
by jsnk 8y ago
This is just an well established fact. Sperm count in industrialized nations have dropped considerably over decades.
https://www.ncbi.nlm.nih.gov/pubmed/1393072 https://www.ncbi.nlm.nih.gov/pubmed/1393072