Can microplastics in follicular fluid affect ovarian reserve?
Use caution. A 2026 exploratory case-control study found higher microplastic levels in follicular fluid among people with diminished ovarian reserve. It does not prove microplastics caused lower egg supply, but it supports reducing avoidable plastic exposure.
What's actually in it
Follicular fluid surrounds a developing egg. Microplastics are tiny plastic particles that can come from food packaging, dust, water bottles, disposable cups, and plastic wear.
Ovarian reserve is a measure of how many eggs remain and how the ovaries respond. It is affected by age, health, medical history, and environmental exposures.
What the research says
A 2026 study in J Hazard Mater tested follicular fluid from 25 people with diminished ovarian reserve and 20 control patients with tubal factor infertility. Microplastics were found in both groups.
Total microplastic levels were higher in the diminished ovarian reserve group: 30.63 micrograms per gram compared with 18.48 micrograms per gram in controls. Polyethylene, polypropylene, and PVC were also higher. Total microplastics, polyethylene, and PVC were linked with lower anti-Mullerian hormone levels, and total microplastics were linked with lower antral follicle count.
What to do at home
This was an exploratory study, not proof that one product lowers egg supply. Reduce daily plastic contact where it is easy: store food in glass, avoid heating food in plastic, choose glass or stainless steel drinkware, and wet dust surfaces often.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Associations between concentrations of microplastics in follicular fluid and the risk of diminished ovarian reserve. | J Hazard Mater | 2026 |