Do you really know? Why is male fertility declining so drastically?
Mar 23, 2026
Brief look at a dramatic 59% drop in sperm counts across Western countries. Exploration of environmental pollutants tied to poorer sperm quality. A rundown of chemicals found in urine samples and bisphenols singled out as especially harmful. A quick note on maternal paracetamol risks during pregnancy. Practical pointers on how men can check fertility with home tests or medical help.
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Steep Global Decline In Male Sperm Counts
- Male sperm counts have fallen sharply in Western countries, with a 59% drop in North America, Europe, Australia and New Zealand between 1973 and 2011.
- Joseph Chance cites a 2017 Oxford Academic meta-analysis of nearly 200 studies as the basis for this finding.
Daily Pollutants Show Direct Link To Sperm Quality
- Environmental pollutants are linked directly to reduced sperm quality in young men through measurable urinary biomarkers.
- A University of Copenhagen study tested 98 Danish men's urine for nine chemicals, tying daily exposure to poorer sperm metrics.
Bisphenols Are Particularly Harmful But Mixtures Still Damage
- Bisphenols (A, S, F) appear especially harmful to sperm counts, but mixtures of pollutants still damage fertility even without bisphenols.
- The study measured bisphenols from food packaging and paint and found combined exposures sometimes 100× above safe levels.