A new Aotearoa New Zealand study has found that nitrate concentrations in drinking water are associated with an increased risk of preterm birth, even at levels well below the current drinking water standard. The study, published in Environmental Research, analyzed 735,831 singleton births betwee...

Source: [Phys.org](https://phys.org/news/2026-07-nitrate-linked-preterm-births-zealand.html)

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