Preconception exposure and fecundability

What the study says

Plain-English summary

Participants in the EAGeR trial provided urine before conception and were followed for up to six menstrual cycles.

Selected metabolites were associated with lower fecundability and altered reproductive-hormone patterns.

The study did not find a clear association with pregnancy loss.

Why it matters

Context

This study broadened the archived pregnancy research beyond exposures measured after conception.

What it cannot prove

Limitations

The findings are observational and were not uniform across every metabolite or outcome. A single urine sample is an imperfect estimate of usual exposure.

Proportionate next steps

Practical actions

• Make gradual changes before pregnancy if that lowers stress.
• Prioritize diet and frequent-use products.
• Bring fertility concerns to a medical professional.

Read it yourself

Original source

Preconception phthalate exposure and women’s reproductive health: pregnancy, pregnancy loss, and underlying mechanisms

DOI: 10.1289/EHP12287