1 in 9 women will get breast cancer at some point in their lives, and at least a third of women will not self-check their breasts. Early diagnosis is essential in treating breast cancer, and that's where monthly self-checks come in. If you're not sure where to start – don't worry! Dr Dawn Harper's guide will give you advice on exactly how to self-check your boobs. Watch this video tutorial and learn how to self examine breasts for any lumps or possible cancer.