How many cruciferous vegetables should I eat to help prevent cancer?

Although the National Cancer Institute recommends five to nine servings of fruits and vegetables per day for cancer prevention, it has not yet established specific recommendations for cruciferous vegetables (green vegetables such as kale, cabbage, collards, and broccoli, plus some non-green vegetables such as cauliflower and turnips). I recommend six fresh fruits and eight total servings of vegetables per day, including two servings of cruciferous vegetables, with at least one raw. Consuming a large variety of these isothiocyanate (ITC)-rich cruciferous vegetables within an overall nutrient-dense diet can provide a profound level of protection against infection and cancer.

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