Brief
Study finds common household chemicals may disrupt breast tissue development
Using organoids from 13 donors, scientists observed molecular changes linked to invasive lobular carcinoma after exposure to realistic chemical levels.
By Felo News Desk · Published
Scientists report that everyday chemicals such as bisphenols, found in plastic bottles and cans, can alter the development of human breast tissue, according to a study published in PNAS and reported by the Independent.
What happened
Researchers obtained breast tissue samples from 13 healthy young women and grew miniature organoids that mimic real breast development. Over a three‑week period the organoids were exposed to a panel of hormone‑disrupting chemicals, including bisphenol A, S and F, at concentrations comparable to those measured in human blood and urine. Molecular analysis revealed changes in gene activity and DNA modifications, especially when the bisphenols were combined.
What the reports add
The Independent notes that the most striking alterations occurred with low‑dose bisphenol mixtures, a contrast to many toxicology studies that use much higher doses. The study also compared the altered organoid cells with tissue from patients with invasive lobular carcinoma, finding a similar molecular pattern.
What was said
"If these results are validated by additional studies, they could change how we think about cancer prevention," said Charlotte Kuperwasser, a study author, as quoted by the Independent. She added, "We intentionally used concentrations of chemicals that were relevant to real‑world exposure rather than the very high doses sometimes used in toxicology studies."
How it came about
Previous research on hormone‑disrupting chemicals largely relied on animal models or cell lines that could not fully replicate human breast tissue complexity. By using organoids, the team aimed to capture the interplay of multiple cell types, building on earlier work that linked pesticide chemicals to breast‑cancer risk, a topic Felo covered on 30 September 2026.
Key facts
- Researchers grew breast organoids from tissue donated by 13 healthy young women. (independent.co.uk)
- Low‑level mixtures of bisphenols disrupted normal breast development in most organoid donors. (independent.co.uk)
- Molecular changes in exposed organoids resembled patterns seen in invasive lobular carcinoma samples. (independent.co.uk)
Sources
- [1] independent.co.uk — originally reported as “Exposure to common household chemicals linked to breast cancer risk”
