- Prevention Hub
- About breast cancer
- Reduce Your Risk
- Our research
- Get involved
- About us
2 years ago
27 March, 2020
The research, published in The Lancet Diabetes & Endocrinology, measured BPA in human urine using a “direct” analytical method rather than the standard two stage test used by most laboratories. The results showed levels of BPA in test subjects to be up to 44 times greater than those obtained using the standard method (1).
This is a concern because BPA, a component of some plastics and until recently used in thermal till receipts, is classified as a Substance of Very High Concern by the EU, due to its hormone disrupting properties and reproductive toxicity. Evidence strongly suggests long-term BPA exposure increases risk of breast cancer and other illnesses. Exposure in utero is of particular concern.
In a published comment on the study, Breast Cancer UK grant recipients Kerri Palmer and Professor Valerie Speirs highlight the role of BPA as an oestrogen mimic as well as its ability to affect other sex hormones which may influence the risk of breast cancer and other hormone-related diseases.
According to Kerri Palmer “We’re concerned that widely accepted analytical methods may be underestimating the levels of BPA. The ubiquitous use of this chemical in everyday products means we may be continuously exposed at higher levels than previously thought throughout our lifetime. Being able to accurately determine BPA levels is fundamental to understanding its potential effects on human health.”
It may not only be BPA levels that are being underestimated. The same type of indirect technique is used to measure bisphenol substitutes (which are routinely replacing BPA in consumer goods) as well as other types of endocrine disrupting chemicals such as phthalates and parabens.
(1) In the human body, orally ingested BPA is rapidly converted to BPA metabolites (BPA- glucuronide and BPA-sulphate) which are excreted in the urine. The standard method relies on these being converted back to free BPA, using an enzyme obtained from snails. It turns out this conversion step is less efficient than previously thought and so not all BPA metabolites are converted to free BPA. The new method measures the metabolites directly.
Gerona, R. et al. (2020). BPA: have flawed analytical techniques compromised risk assessments? The Lancet Diabetes & Endocrinology Correspondence Volume 8, Issue 1, p11-13, published January 01, 2020. https://www.thelancet.com/journals/landia/article/PIIS2213-8587(19)30381-X/fulltext
Palmer, K. and Speirs, V. (2020). BPA and risk assessment. The Lancet Diabetes & Endocrinology Correspondence Volume 8, Issue 4, p269, published April 01, 2020. https://www.thelancet.com/journals/landia/article/PIIS2213-8587(20)30068-1/fulltext
16 June 2022
Breast Cancer UK joined hundreds of charities at a Service of Thanksgiving at Westminster Abbey to celebrate the remarkable difference they make in their communities. His Royal Highness, The...Read full story
13 June 2022
In May our Head of Science, Margaret Wexler, spoke at a parliamentary event on pesticides. Organised by The Pesticide Collaboration and RSPB, and hosted by Luke Pollard, MP for Plymouth,...Read full story
2 March 2022
Getting a cancer diagnosis understandably creates a whole jumble of emotions. One is that you don’t want anyone else or their family to go through the same thing. And it's...Read full story
A £10 donation today can help fund our PHD studentships to carry out world-class animal free research into the causes of breast cancer.
A donation of £30 can help fund our Prevention Hub so your loved ones can learn how to reduce their risk.
Your donation of £50 can fund our animal free research and educational programmes to prevent breast cancer for future generations.
Just want to help in some way? donate an amount that feels right for you
New easy way for you to donate to Breast Cancer UK:
Donate £5 please text to 70970