Is it safe to use BPA-free plastic bottles if they contain bisphenol F?
Use caution. Bisphenol F is a BPA replacement, and a 2026 mouse study found kidney inflammation and fibrosis after oral BPF exposure.
What's actually in it
Some BPA-free plastic products use other bisphenols, including bisphenol F (BPF). BPF is used in plastics and epoxy resins. It is close enough to BPA that it deserves its own scrutiny.
If a bottle or food container still contains BPF, the safer move is to avoid using it for daily drinks, hot liquids, or long food storage.
What the research says
A 2026 study in Toxics gave male mice oral BPF every day for 28 days. Researchers found kidney damage, inflammation, and fibrosis tied to endoplasmic reticulum stress and immune-cell changes.
This was an animal study, so it does not prove the same kidney outcome in a person using one bottle. It does show that BPF is not an empty label swap.
What to do in the kitchen
Choose glass or stainless steel for daily drinks and food storage. Do not heat food in plastic. Do not put hot drinks in plastic bottles.
For plastic products you already own, check whether the maker says BPA-free, BPS-free, and BPF-free. If it only says BPA-free, treat it as incomplete information.