Sperm Quality Isn't Declining Everywhere: Ireland Bucks the Trend
NonToxCo Research
Science & Safety Team · 4/7/2026
While global headlines warn about collapsing sperm counts, one Irish fertility clinic tells a different story. Over 16 years, sperm concentration went up 23%.
What the Study Found
A 2026 study in Andrology analyzed 18,219 semen samples from 15,413 men attending a single fertility clinic in Dublin, Ireland, between 2008 and 2023.
Median sperm concentration rose significantly from 57 million/mL in 2008 to 70 million/mL in 2023. Progressive motility stayed stable. Rates of very low sperm count (oligospermia) and zero sperm count (azoospermia) didn't change.
Why This Matters
Major global meta-analyses have reported alarming declines in sperm counts over the past 50 years. Environmental chemicals like phthalates, PFAS, and pesticides are prime suspects. But this study shows the trend isn't universal. Regional differences exist.
That doesn't mean chemicals aren't affecting male fertility. It means the picture is more complex than "everything is getting worse everywhere." Local environmental conditions, diet, lifestyle, and chemical exposure patterns all play a role.
The Bigger Picture
The global decline in sperm quality is well-documented in many regions. Countries with higher industrial chemical exposure tend to show steeper drops. Ireland's results might reflect lower exposure to certain endocrine disruptors, different dietary patterns, or other protective factors.
What You Can Still Do
Whether sperm counts are rising or falling in your area, reducing chemical exposure is still smart. Avoid phthalates in plastics and personal care products. Filter your water. Reduce PFAS exposure. Browse non-toxic home essentials for a cleaner home environment.
Also see non-toxic kitchen essentials for safer alternatives.