Research has shown repeatedly that cruciferous vegetables fight cancer. In fact, broccoli has been shown to kill the stem cells that make cancer immortal. While broccoli is a rich source of sulforaphane, sprouting broccoli boosts sulforaphane content to superfood levels. Three-day-old broccoli sprouts contain 10- to 100-times higher levels of sulforaphane than a mature head of broccoli. Just one ounce of broccoli sprouts contain as much sulforaphane as 1 1/2 pounds of broccoli. Broccoli sprouts have been proven to be very effective in reducing breast cancer risks. A University of Illinois study published in The British Journal of Nutrition suggests that combining broccoli with broccoli sprouts may make the vegetable’s anti-cancer effect almost twice as powerful. According to Elizabeth Jeffery, a professor of nutrition at the university, it takes only 3 to 5 servings of broccoli per week to obtain cancer prevention benefits. But it’s important that the broccoli you eat still has a live …