Nitrates in Food May Be Risky During Pregnancy
NonToxCo Research
Science & Safety Team · 4/8/2026
Nitrates and nitrites are in processed meats, some vegetables, and drinking water. And a new review is raising questions about what they do to pregnant women and their babies.
What the Research Looked At
A 2026 scoping review in Int J Hyg Environ Health examined the effects of prenatal nitrate and nitrite intake on pregnancy outcomes and maternal and child health. The review covered studies in mammals to map out what we know so far.
Nitrates and nitrites are found in bacon, hot dogs, deli meats, cured sausages, and some contaminated drinking water. They're also in certain vegetables like spinach and beets, though the risk profile differs based on the source. Processed meat is the bigger concern because of how nitrites interact with proteins during cooking to form nitrosamines, which are known carcinogens.
Why Pregnancy Matters
During pregnancy, the developing fetus is especially vulnerable to chemical exposures. Nitrates can affect oxygen delivery in the blood (methemoglobinemia) and may disrupt fetal development. The review looked at associations with pregnancy complications and child health outcomes.
What You Can Do
Cut back on processed meats, especially during pregnancy. Choose "uncured" or nitrate-free versions when you can. Filter your drinking water if you're on well water or in an agricultural area. Check out non-toxic baby products to start building a safer environment before baby arrives.
Also see glass food storage for safer alternatives.