Health according to the definition of World Health Organization is a "a state of complete physical, mental, and social well-being and not merely the absence of disease or infirmity." A lot of researchers nowadays continue to conduct war against cancer. In fact Rachael Stolzenberg-Solomon, PhD, MPH, RD, a researcher at the National Cancer Institute says that, "The easiest, least-expensive way to reduce your risk for cancer is just by eating a healthy diet�.

In order to fight cancer, most experts agree that having a plant-based diet is a good idea. It would actually lead to drastic change of diet but "If you have two-thirds of plant food on your plate, that seems to be enough to avoid excessive amounts of food high in saturated fat," says Karen Collins, RD, nutritional adviser for the American Institute for Cancer Research. Below are some list of food substances that acts as cancer-fighting agents.

1) Lemons

With a pH level of 9.0, lemons are most potent and gives abrupt relieve for heartburns, flu, colds, cough and other virus related ailments.

2)Watermelon

Due to its high fibre and water content, watermelon is an absolute source of beta-carotene, vitamin C and lycopene. Aside that it is very alkaline, it is also a thirst quenching fruit.

3) Cantaloupe, Cayenne (Capsicum)

This foods possess a high level of enzymes for endocrine system. It has an antibacterial properties as well as vitamin A that are essential in fighting free radicals that causes illnesses.

4) Agar Agar (Organic Gelatin)

With an 8.5 pH, agar is rich in calcium and high in iron. This is actually made from seaweeds and has the highest fiber content compared to other foods.

5) Limes, Mango, Melons, Papaya, Parsley

This food group is the best cleansing foods for kidney with a pH of 8.5.

6) Watercress, Seaweeds, Asparagus

Also known as powerful acid reducer foods.

7) Chicory, Kiwifruit, Fruit juices

This group is plenty in flavonoids which are high in antioxidant properties and gives more energy to the body.

8) Grapes (sweet), Passion fruit, Pears (sweet), Pineapple, Raisins, Umeboshi plum, Vegetable juices

High in vitamin A, B and C, and has a high antioxidant properties that are needed in our body.

9) Apples (sweet), Apricots, Alfalfa sprouts

These are high in fibre and rich in enzymes that helps maintain the body;s hormonal balance.

10) Avocados, Bananas (ripe), Berries, Carrots, Celery, Currants, Dates, Garlic

With a pH value of 8.0, these foods possess a very powerful antioxidants.