Regarding the breast feeding and breast cancer stat - the studies into this are clear that there is a link but it’s not as black and white as breastfeeding = guaranteed decreases risk. The studies found that a) bf women MAY have fewer periods, so less estrogen which has been linked to aggressive forms of cancer, b) that bf mother’s tended to stop smoking and drinking and ate more healthily as the quality of milk is dependent on these things. These factors also decrease risk of cancer funnily enough.
The breast cancer society itself says;
‘It’s not yet possible to predict who will get breast cancer, and for women who have been diagnosed with the disease, it is not possible to say what caused it to develop. This is because there is no single cause of breast cancer – it results from a combination of our genes, the way we live our lives and the surrounding environment.
There are many important benefits associated with breastfeeding for both mother and child, but the decision to breastfeed needs to be a personal one. While many women breastfeed, not all women choose to and others find it difficult or are unable to for a number of reasons.
When deciding whether to breastfeed, you should consider the benefits for both you and your child, as well as the practical issues associated with breastfeeding. Breastfeeding can reduce the risk of breast cancer, but only slightly, and there other things that can do to reduce your risk.’
The other steps you can take such as not smoking, not drinking, maintaining weight etc have been proven to be as effective.