Hispanic women also tend to suffer from more estrogen receptor negative cancers and, like African American women, have higher mortality rates from breast cancer.
Part of this, is that both African American women and Hispanic women present with more advanced forms of the disease than other women.
There are studies currently under way looking specifically at Hispanic women and risk factors, but not many conclusions yet.
Jewish women from an Ashkenazi (eastern European) background, have a 1 in 40 chance of carrying a tumor suppressor gene known as BRCA1 or BRCA2. The ones that do, have about a 40% chance of developing cancer related to breast, ovarian or both types of tissue.
This tends to be a much more aggressive cancer than the more common hormone sensitive cancer and has higher mortality rates.
In conclusion, even though certain ethnic groups of women have a greater chance of developing a more aggressive form of breast cancer, the most common type in any group is still the hormone dependent, less aggressive form.
And this is the type most understood in terms of risk factors and diet.