Broccoli contains sulforaphane, a molecule shown to reduce the number of breast cancer cells in laboratory studies.
Sulforaphane, which is in broccoli and many other cruciferous vegetables, was found to inhibit the growth of breast cancer cells by up to 50% in animal studies. Although these studies were performed on animals, not humans, correlational studies of human dietary patterns have shown that those who eat cruciferous vegetables have a lower breast cancer risk.
One of the ways that cruciferous vegetables such as broccoli provide breast cancer protection is by significantly reducing excess circulating estrogen in the blood, which provides protection for those with hormone sensitive types of breast cancer.
Both fresh and frozen broccoli contain this cancer reducing nutrient. One easy and delicious way to make broccoli is to steam it and drizzle with extra virgin olive oil and sea salt. Also you might try squeezing lemon juice over the top or sprinkling with sesame or toasted hemp seeds. Aim for 1/2 cup of cruciferous vegetables each day during treatment and as a protection strategy in remission to prevent reoccurrence.