Broccoli is an anti-cancer food. It's a cruciferous vegetable, along with cabbage, swiss chard, and kale. Phytochemicals, the substances found in broccoli, help take out carcinogens (cancer-causing substances). Eating broccoli regularly can help reduce the risk of many cancers, and can help your body rid itself of toxins.
-Nutrient Dense: Broccoli has 2x the vitamin C of an orange, and almost as much calcium as whole milk.(1)
Some people like it; some people don't. You can eat broccoli raw, by itself or on a salad, if you can easily digest it. If not, you can steam it on medium heat. You will still get alot of the nutrients and health benefits of the broccoli this way. Fresh, young broccoli is the best. Shop for broccoli that has fully green florets (the head), firm stalks, and a fresh smell. USDA Organic is best, though its said that broccoli is one of the plants that are least contaminated with pesticides.
(1) Source: Wood, Rebecca. The New Whole Foods Encyclopedia, (New York, NY: Penguin Group, 1999), p45.