This week, Naomi wrote about the health risks of silicone breast implants and failures of oversight and regulation by the government agencies in the US and UK charged with safeguarding women's health. The issue was uppermost in her mind after she had appeared on a recent edition of the BBC's Newsnight programme, where she debated the ramifications of a particular case – the misuse by a French company implant-maker, PIP, of industrial-grade silicone – with health minister Anne Milton.

Naomi will be joining commenters for a live webchat here in the discussion thread from 1pm till 2pm EST (6-7pm UK time). Commenting will be switched on then, and the thread will remain open afterwards. Please join Naomi, especially if you have personal experience and insight to share.