Women who drink above the government's recommended limit are 50% more likely to develop breast cancer, the Department of Health has said.

A £10m advertising campaign has been launched targeting middle-aged women who might underestimate their drinking.

A health department report, which has yet to be published, says women who drink more than 14 units of alcohol a week are at increased risk.

Cancer Research says alcohol causes about 2,000 breast cancer cases a year.