In this modern era of our technology, we don't  get any natural elements,vitamins. Most of the foods are preserved using chemicals , that causes a great but slow health damage. Day by day ,our body becomes weaker and antibodies starts to die.  Not for only food habit but for also environment pollution and other  fact. And, these all cause cancer.
 Cancer is the name for a group of diseases that occur when cells grow and spread uncontrollably.  American Cancer Society describes that “cancer is caused by external factors, infectious organisms,such as tobacco,  and internal factors, and an unhealthy diet, such as hormones, and immune conditions,inherited genetic mutations, . These factors may act together or in sequence to cause cancer.” While not all cancers may be prevented, there are some that can be. For example, cancers caused by tobacco use and heavy alcohol consumption can be prevented completely by lifestyle changes.
There are other ways to prevent, or at least reduce, your risk of cancer naturally. Of course, if you have a family history of cancer or have medical issues or concerns, you should consult with your own medical professional for proper diagnosis. Most of the ways to reduce cancer risk include changing your eating habits, changing your exercise habits, and taking the right vitamins, supplements, and probiotics.
Some of the ways are given below...

1. Maintain a healthy weight
Obesity is a known risk factor for increasing your risk of developing breast cancer. Regular workouts help you burn fat, which produces estrogen, a known cause of breast cancer. Brisk walking is one way to help maintain a healthy weight.

2. Eat resistant starche
Doctors especially  recommendate of eating resistant starches.
Resistant starch is found in foods such as green bananas, rolled oats, and white beans.Resistant starch may help reduce the increased risk of colon cancer caused by a diet high in red meat.Adding resistant starches every day while eating lean red meat helps cell proliferation in rectal tissue go back to normal.

3. Filter your tap water
Filtering your tap water to reduce exposure to both known and suspected carcinogens and chemicals that can disrupt your hormones.The President’s Cancer Panel suggests filtered tap water at home is safer than bottled waterStore filtered water in stainless steel or glass containers   and of course avoid chemical contaminants such as BPA that can leach from plastic bottles.

4. Increase your intake of omega-3 fatty acids
The National Center for Biotechnology Information advances science and health by providing access to biological information. In this report, Carol Fabian, Bruce Kimler, and Stephen D. Hursting detail research findings on the connection between omega-3 fatty acids and breast cancer prevention and survivorship.
Omega-3 fatty acids have been found to reduce the risk of breast cancer.
Omega-3 fatty acids aid in reducing inflammation, which may lead to cancer.
Primary sources of omega-3 fatty acids include fish and supplements.

5. Avoid alcohol
The goal is to reduce your cancer risk factors while using dietary and lifestyle changes associated with breast cancer prevention.Women who drink one alcoholic beverage per day have a 10% greater risk of breast cancer.Women who drink two alcoholic beverages per day have a 20% increased risk of breast cancer.

6. Reduce risk of liver and colorectal cancer with probiotics
probiotics play a beneficial role in reducing gastrointestinal inflammation and preventing colorectal cancer. These have been found to combat liver cancer and colorectal cancer.Probiotics reduce liver tumor growth by blocking angiogenesis, or the process that involves tumors generating new blood vessels to spread and grow.It increases the anti-inflammatory bacteria and metabolites present in the gut, which may account for their ability to block tumor progression.

7. Eat more tomatoes
Best recommended ways to reduce cancer risk naturally is to eat more tomatoes, because they are a top source of lycopene. Lycopene is a free radical-fighting antioxidant that prevents free radicals from attaching to your cells and wreaking havoc on your immune system.Lycopene helps prevent prostate, lung, and stomach cancers. Some evidence suggests that lycopene may help to reduce the risk of pancreatic, colorectal, esophageal, breast, and cervix cancer. Tomatoes and tomato products, guava, watermelon, and pink grapefruit contain lycopene.

8. Include flax in your diet
Flaxseed is one of their top ways to reduce cancer risk naturally.You can eat flax as a whole seed, ground seed, or flaxseed oil.The omega-3s, lignans, and fiber in flaxseed form a protective shield against the cells responsible for causing breast cancerConsider adding flax to yogurt or a smoothy or adding flaxseed oil to salad dressings or baked goods.

9. Eat more garlic
Garlic is one of the superfoods they suggest eating as a way to reduce your cancer risk naturally.The sulfur compounds in garlic may prevent cancer-causing substances from forming in your body.Garlic fights bacteria, including H. pylori, the bacteria that is connected to some ulcers and stomach cancer. Garlic reduces the risk of colon cancer.

10. Avoid excess protein
Avoid excessive amounts of protein if you want to minimize your risk of lung cancer, but keep in mind that a certain amount of protein is necessary for a healthy body. Pancreatic enzymes are able to destroy cancer cells, but high protein diets force pancreatic enzymes to focus on protein digestion rather than on the eradication of cancer. Some experts suggest a protein-free period of 12 hours each day to combat cancer.

11. Avoid tobacco
 Quitting smoking or other tobacco use is one of the most important steps you can take to protect your health. Cigarette smoking causes lung cancer in addition to cancers of the esophagus, larynx, mouth, throat, kidneys, bladder, pancreas, stomach, and cervix . Secondhand smoke causes lung cancer. Smokeless tobacco, cigars, and pipes also increase cancer risk.

12. Increase your intake of antioxidants
Antioxidant supplements reduce the risk of death from gastric cancer. While the body makes some antioxidants, our diet provides the rest of the antioxidants we need. Fruits, vegetables, and grains are rich sources of dietary antioxidants.

13. Limit red and processed meat
Processed meats such as bacon, sausages, hot dogs, pepperoni, and salami contain the highest cancer risk due to the nitrate preservatives and other substances used in processing the meat. Red meat lacks fiber and other nutrients that have cancer-protective properties. Industrially-raised meat often contains antibiotics and hormones, and the animals may have been raised on feed containing GMOs, which are markers for an increased cancer risk.

14. Get enough calcium and vitamin D
People should take 1,000 to 1,200 milligrams of calcium per day. People should take about 1,000 international units (IU) of vitamin D per day.
You should know whether you have a vitamin D deficiency, especially if you live in northern parts of the country, are elderly, are very overweight, or have darker skin.

15. Eat more fat from plants than animals
One of the effective Way to Reduce Your Risk, explores ways to reduce your prostate cancer risk by making healthy choices that include exercising and eating a healthy diet, such as eating more fat from plants than animals.Fats from animals are more likely to be associated with an increased risk of prostate cancer. Animal products containing animal fats include meat, lard, and butter. Consider using plant-based fats, such as olive oil instead of butter and nuts or seeds on salads instead of cheese.

16. Eat lots of raw vegetables
Eating lots of raw vegetables as a natural way to reduce cancer risk.Eating more fruits and vegetables can reduce all kinds of cancer risks. Fruits and vegetables contain phenols, indols, flavones, cumines, and isothiocyanates, which naturally block carcinogens.
The best vegetables are cruciferous vegetables, such as broccoli, cabbage, Brussel sprouts, mustard greens, kale, and cauliflower.

17. Eat more beans
Eating more beans and peas as a way to reduce cancer risk naturally.
Legumes such as kidney and black beans, yellow split peas, and red lentils are rich in fiber and are a good source of protein, folate, and vitamin B. Dry beans and peas are resistant starch that is used by healthful bacteria in the colon to produce short-chain fatty acids that protect colon cells.Legumes contain other health-promoting substances, like lignans and saponins and antioxidants, that protect against cancer.

18. Reduce stress
Find practical ways to cope with stress that work for you and your lifestyle. Exercising or beginning yoga is one good way to to stay active and reduce stress. Explore your creative abilities, such as painting, drawing, writing, or ceramics, to keep your stress level at a minimum.

19. Lower your consumption of saturated fats
Saturated fat plays a role in increasing breast cancer risk.
Foods high in saturated dat includes fatty cuts of meat, butter and lard, cheese, sour cream, ice cream, chocolate products, cookies, cakes, and pastries.  Women who ate higher levels of saturated fats double the risk of breast cancer compared to those eating the least.Opting for food containing fish oil have a lower breast cancer risk.

Maintaining those points , you can reduce the chance or you can use the methodes as a cancer prevenion remedy. Life is a beautiful thing. Don't waste it having no good lifestyle. It's not so tough to maintain. You need to do regularly. And, this will be habitable.
At the dead end, I just want to say that,

                                                                   Life is better than death.
                                                          Good health is better than rich food.