Why Bisphenol S exposure in babies is increasing

The BPS Problem

Your baby’s exposure to Bisphenol S (BPS) is likely increasing every month they are alive. A 2026 study published in Toxics tracked the chemical burden in mother-infant pairs and found that while infants start with lower levels of BPS at birth, those levels jump significantly by the time they reach 10 months old. The study confirms that postnatal exposure is outpacing prenatal levels.

Why It Matters

BPS is the chemical industry’s favorite replacement for BPA. It is an endocrine disruptor, meaning it interferes with the body’s hormonal systems. Researchers used hair biomonitoring to measure these levels, proving that infants are accumulating these chemicals at a higher rate than their mothers after birth. This isn't a one-time event. It is a constant, time-dependent burden that begins the moment your child starts interacting with their environment.

How to Limit Exposure

You cannot control the entire world, but you can control what your baby touches, chews, and eats from. Most BPS exposure comes from plastic bottles, food storage, and toys that leach chemicals during daily use. It is time to audit your nursery and kitchen. Ditch the plastics that claim to be BPA-free but contain hidden alternatives like BPS. Start by swapping out your plastic gear for glass, stainless steel, or food-grade silicone. You can find non-toxic baby alternatives that are tested and proven to be free from these common endocrine disruptors. Small, consistent swaps are the only way to lower your baby's chemical load.

Source: Kalligiannaki A, Baliou S, Vakonaki E, Panteris E, Hatzidaki E (2026). Toxics.