Is it safe for dads to use plastic bottles before conception?
Use caution. A 2026 animal study found paternal BPA or BPS exposure at environmentally relevant doses impaired testicular development in male offspring.
What's actually in it
Plastic bottles and food containers can expose people to BPA or BPA replacements such as BPS. Heat, sunlight, scratches, and long storage time can make plastic a bigger concern.
Sperm develops over roughly 3 months. That makes the preconception window a practical time for dads to lower avoidable exposures.
What the research says
A 2026 study in Environmental Pollution exposed fathers to environmentally relevant doses of BPA or BPS. Male offspring had lower testosterone, impaired testicular development, reduced sperm quality, and more sperm malformations during puberty.
The study also found changes in the OCTN2 carnitine transporter, testicular energy metabolism, oxidative stress, and apoptosis markers.
What to do in the kitchen
Use glass or stainless steel for daily water, coffee, and food storage. Do not heat food in plastic. Replace scratched plastic containers.
Couples trying to conceive can do the kitchen cleanup together: glass storage, stainless steel tools, fewer plastic bottles, and less plastic contact with hot food.