vegies - The fact is, many types of vegetables can prevent cancer and provide the protection against cancer. Research has identified many active ingredients found in vegetables and their roles in protecting different types of cancer. 1. Vegetables with the Highest Anti-cancer Activity garlic cabbage soy ginger umbelliferous vegetables such as carrots, celery, cilantro, parsley and parsnip 2. Vegetables with the Modest Anti-cancer Activity onions flax seed citrus cruciferous vegetables such as broccoli, Brussels sprouts and cauliflower solanaceous vegetables such as tomato ( rich in lycopene) and peppers