The Leafy Greens Lesson Plans

Science/Health #2

OBJECTIVES: Students will understand cancer-fighting elements in cruciferous vegetables.


The National Academy of Sciences, National Cancer Institute, and American Cancer Society have all urged people to eat foods low in fat and high in fiber, vitamin A and vitamin C. Eating foods low in fat, cholesterol, salt and sugar, and high in fiber reduces the risk of heart attack, stroke, diabetes, obesity, tooth decay, and constipation. Following these guidelines should improve your chances for a long, healthy life. The National Cancer Institute reports that foods rich in vitamins A and C have been associated with the reduced risk of certain cancers, such as of the larynx, esophagus, and the lung. The American Cancer Society notes that cabbage helps prevent cancer of the colon and stomach.

According to Dr. Wendy Demark at the Duke Comprehensive Cancer Center, diet plays a big role in cancer prevention. It is estimated that over one third of all cancer-related deaths could be prevented by a healthy diet. Fruits and vegetables are key. Research suggests that people who eat at least 5 servings of fruits and vegetables per day cut their cancer risk in half when compared to those who consume one serving or less. Vegetables are especially nutrient dense. Calorie for calorie they pack more vitamins, minerals, fiber, and other cancer fighting agents than any other food group. Cabbage family (cruciferous) vegetables are particularly powerful cancer fighters.

  1. Have students name ways that they have eaten cruciferous vegetables (salads, casseroles, steamed, etc.) Take a poll of how many students ate vegetables yesterday. Brainstorm ideas for other ways to eat them.

  2. Demonstrate proper hand-washing techniques. Then demonstrate washing leafy greens. Wash greens thoroughly by placing them in a sink filled with lukewarm (tepid) water and swish around. Remove any roots or stems, repeat washing. Pat dry on paper towels.

  3. Extend personal hygiene concepts to show the need for sanitation regulations in food care and handling. Set up a tour of your school cafeteria kitchen and ask the manager to show the students sanitation procedures.

Go to Cruciferous Crusaders Cancer Fighter Search Activity Sheet

Science/Health | Main Menu