It's after traces were found in her system from eating vegetables from her own garden.
Laois chef Darina Allen has joined the calls for an alternative to glyphosate to be found.
It's the main ingredient in the weedkiller Roundup - and its current licence in Europe is due to expire in 2022.
The founder of Ballymaloe Cookery School was surprised to recently find traces of the chemical in her system, although primarily eating from her organic garden.
The Cullohill woman says a huge amount of research has been done into the side effects of the glyphosate on humans, and believes it should be phased out.
However, farmers must be supported in the transition:
Funeral Arrangements Announced For Woman Killed In Midlands Crash
Garda Commissioner Confident Security Operation For EPC Meeting Will Be A Success
Midlands Gardaí Appeal For Witnesses To Fatal Crash
Midlands Security & Defence Analyst Says Hoax Bomb Threats Aimed To Intimidate
Almost €446,000 Allocated To Midlands Community Centres And Clubhouses
Midlands Family Takes On Ireland’s Fittest Family Challenge
5K Fundraiser To Support Motor Neurone Disease Association Takes Place In Westmeath