Sperm count has fallen by nearly 60 per cent in richer countries
They don't give a reason, but I am pretty sure it is antibiotic related.
The results from this study suggest that tetracycline has deleterious effects on male reproductive parameters of albino rats.
Most other antibiotics haven't been studied for sperm production, but a few of them sure do cripple sperm that already exist...
And most antibiotics do induce systemic endotoxin release.
Endotoxemia reduces testicular function. It's the trigger in the "GELDING" theory of obesity.
They propose endotoxin lowers your sex hormones which then makes you fat...