Could BROCCOLI protect against cancer?

Broccoli has long been hailed as a superfood, and it could soon protect people from cancer of the mouth, throat, neck and head, a study claims.
Scientists are developing a new treatment known as 'green chemoprevention' in which broccoli and other vegetables are used to prevent the disease.
They explained that cruciferous vegetables such as broccoli, cabbage and garden cress have a high concentration of sulforaphane – which is why they have a slightly bitter taste.
Previous studies, including large-scale trials in China, have shown sulforaphane helps 'undo' the effects of cancer-causing agents in the environment.
Now, lab tests have shown extracts made from broccoli sprout protected mice against oral cancer. American scientists now plan to carry out clinical trials on patients at high risk of having their head and neck cancer return.

Source  - Daily Mail