Sally Roberts has exclusively told ITV Daybreak that she is concerned that radiotherapy treatment could be damaging to her son Neon, by affecting his DNA.
She said there are "so many" other treatments that her son could be having instead.
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Former US President George H.W. Bush is in intensive care after suffering from pneumonia, as his wife is admitted as a precaution.
The tech giant is taking steps to measure economic confidence and steps to halt the spread of fake news, but denied that it was a publisher.
Temperatures still a talking point