There is a genetic explanation for why women from poor backgrounds are less likely to beat breast cancer, Dundee University researchers have said.

Poor lifestyles may trigger a key gene mutation linked to worse prognosis, the British Journal of Cancer reports.

The researchers tested samples from 246 women and found that a woman's postcode could be connected to the "health" of the p53 gene in her tumour cells.

Cancer charities said adopting a healthy lifestyle was advantageous.

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