Have microplastics been found in human placentas?
Yes. A 2021 Environment International study found microplastic fragments in 4 of 6 human placentas. A 2026 perinatal review says pregnancy effects remain poorly understood.
Short answer
Yes. A 2021 Environment International study tested 6 human placentas and found 12 microplastic fragments in 4 placentas.
A 2026 American Journal of Perinatology article says microplastics have been detected in human placental and neural tissues. It also says the impact on pregnancy outcomes and fetal development is still poorly understood.
What this means
This finding is a reason to reduce avoidable plastic exposure. It is not a reason to panic, and it does not prove that one plastic item harms a pregnancy.
What to do
Start with food contact. A 2025 Food Chemistry study found that plastic food containers can release microplastics, especially with high-fat foods, temperature changes, and longer contact time. Use glass storage for leftovers and warm foods when you can.
The research at a glance
What to use instead
Use glass storage for leftovers and warm foods. This lowers one plastic food-contact route without claiming to change pregnancy outcomes.
Shop Non-Toxic Kitchen