Garlic

Several large studies have found that those who eat more garlic are less likely to develop various kinds of cancer, especially in digestive organs such as the esophagus, stomach, and colon. Ingredients in the pungent bulbs may keep cancer-causing substances in your body from working, or they may keep cancer cells from multiplying.

 Experts don’t know how much you need to eat to prevent cancer, but a clove a day may be helpful.

Broccoli

All cruciferous veggies (think cauliflower, cabbage, and kale) contain cancer-fighting properties, but broccoli is the only one with a sizable amount of sulforaphane, a particularly potent compound that boosts the body's protective enzymes and flushes out cancer-causing chemicals, says Jed Fahey, ScD. A recent University of Michigan study on mice found that sulforaphane also targets cancer stem cells—those that aid in tumor growth.

Raspberries

Raspberries contain many vitamins, minerals, plant compounds and antioxidants known as anthocyanins that may protect against cancer. According to a recent research study reported by Cancer Research 2001;61:6112-6119, rats fed diets of 5% to 10% black raspberries saw the number of esophageal tumors decrease by 43% to 62%. A diet containing 5% black raspberries was more effective than a diet containing 10% black raspberries. Research reported in the journal Nutrition and Cancer in May 2002 shows black raspberries may also thwart colon cancer. Black raspberries are rich in antioxidants, thought to have even more cancer-preventing properties than blueberries and strawberries.

Olive Oil

Olive oil has been shown to possess anticancer properties. Studies have demonstrated that the monounsaturated fatty acids contained in olive oil have a protective effect against cancer growth. Research has also shown that the phytochemicals abundant in olive oil inhibit cancer growth in vitro. But remember, more isn't always better. Olive oil still has 120 calories per tablespoon, so don't go overboard. For maximum benefit, olive oil should be used in moderation. Choose a good-quality, extra virgin, cold-pressed variety.

Organic Meats

Organic meats including beef or chicken liver are recommended on many cancer-fighting diets since they’re considered some of the most nutrient-dense foods on the planet and extremely high in vitamin B12. Consuming organic meats as part of a “nose to tail” approach to eating animal proteins provides minerals that help cleanse the liver and enhance the ability to remove toxins from the blood and digestive tract.

Green tea

Green tea contains large amounts of catechins, compounds that boast many anti-cancer properties. To maximize the preventative effects afforded by tea, select Japanese green teas, allow for an eight-to-10-minute brewing period and always drink freshly brewed tea, avoiding Thermoses.

Spinach

Though this leafy green is low in calories, it offers incredible health benefits with vitamins, minerals, and omega-3 fatty acids that your body needs to stay strong (just like Popeye).  It contains bio-chemicals called flavonoids – at least thirteen discovered so far – that soak up damaging free radicals and flushes them out.  Particularly rich in folate and fiber – two elements that doctors believe are essential to cancer prevention – make spinach one of our favorite cancer-fighting foods.

Carrots

This well-loved vegetable is a wonderful source of beta-carotene, an antioxidant that aids in preventing cell damage and may slow the growth of cancer cells.  They contain falcarinol and falcarindiol – natural pesticides in the vegetable that scientists believe are the reason for their cancer-fighting abilities.  Of course, they’re good for your vision, skin, and as a natural detoxifier as well.

Ginger

Fresh, raw ginger has a number of very important benefits in cancer. It is a terrific anti-inflammatory agent in the body and reduces the effects of COX-2. This produces benefits throughout the body and especially in the gut, reducing rates of cancer spread. It also lowers blood sugar levels, and gingerols have been shown to have effects against prostate, breast, leukaemia and other cancer cells. Grate 5 gms or more of ginger each day into your juices. It is also full of helpful vitamins and minerals and is anti-parasitic.

Mushrooms 

There´s an enormous body of research evidence now that shows how ´medicinal´ mushrooms (Shiitake, Maiitake, cordyceps etc) boost the immune system and fight cancer.  Even the button mushroom has cancer fighting ingredients.