I don't think any ONE thing causes breast cancer. If it were that simple they would have worked it out. I think it is probably reasonable to think that dairy might be a problem for some people and combined with other circumstances may have an impact on getting cancer.
As Michelle says everything in moderation. If you don't have an issue such as lactose intolerance then a little dairy included in a balanced diet rich in organic vegetables and fruit and a little organic meat should be a good thing.
Combine this with other healthy lifestyle measures such as exercise and meditation, avoiding chemicals (including alcohol) where possible and not stressing over articles such as this and I think we are doing the right thing for our bodies.
Many people eat diary and never get breast cancer and this lady has reduced or excluded it and still had breast cancer 6 times!
Take care.
Deanne xxx