Advice on cutting breast cancer risk
4 February 2011 Last updated at 18:17 GMT
The chances of a woman getting breast cancer in Britain have risen to one in eight, according to figures released by Cancer Research UK.
The charity says part of the reason is the way we live now, with obesity, drinking alcohol and having children later in life all contributing factors.
Director of Cancer Services for England, Prof Sir Mike Richards, told the BBC: "Our advice is to drink alcohol in moderation." He also advised women to avoid obesity and take exercise.