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How Diet Influences Cancer Risk
by: Alex Fir
Diet is a double edged sword. Improper diet increases the risk of cancer but a proper, well balanced diet reduces the cancer risk.

Diet is one of the most important lifestyle factors and has been estimated to account for up to 80% of cancers of the large bowel, breast, and prostate. Diet affects the risk of many other cancers, including cancers of the lung, prostate, stomach, esophagus and pancreas.

Prostate Cancer:
High consumption of meat, especially red meat, substantially increases the risk of prostate cancer.

Vegetables, especially cooked tomatoes, reduce the risk of prostate cancer. In one clinical trial, the role of Vitamin E as a prostate cancer reducing factor was established. In this study there was a 32% decrease in prostate cancer incidence and 41% decrease in prostate cancer mortality in people receiving Vitamin E supplements when compared to controls.

Breast Cancer:
In Japan, people consume Tofu, a soya product. It contains isoflavones that moderate the estrogen receptors in the body such as breast tissue. The incidence of breast cancer is low in Japan when compared to Western women; only 1/4th of the mortality rate of Western women. Japanese women's low fat diet, high fish consumption and drinking green tea also decrease their breast cancer risk.

One case control study found that regular consumption of soy foods was associated with a marked decrease in breast cancer risk in premenopausal women. No effect in post-menopausal women.

A Japanese case-control study also found that tofu intake (3 times/wk compared with less than 3 times/wk) was associated with decreased risk of breast cancer in premenopausal women. Again, soy intake was not protective against post-menopausal breast cancer.

In one study conducted in America, the relation between soy intake and breast cancer risk found that tofu consumption was protective in both premenopausal and post menopausal Asian women.

Lung Cancer:
Lung cancer risk is substantially decreased by a variety of carotenoids. Carotenoids act as antioxidants and thus minimize cell damage.

One study in Boston focused on the effect of different types of carotenoids on lung cancer risk. It was observed that lung cancer risk was significantly lower in subjects who consumed a diet high in a variety of carotenoids. This was especially true with non-smokers who had 63% less risk.

One study conducted in Hawaii reported further evidence for a protective effect from certain carotenoids against lung cancer and that greater protection was afforded by consuming a variety of vegetables compared to only foods rich in a particular carotenoid.

Stomach Cancer:
Nitrates in food and other preservatives added to food including meat are converted into 'nitrites' in the human stomach. The nitrites undergo nitrosation to form 'nitrosamines' and 'nitrosamides'. This increases the risk of stomach cancer in people eating vegetables from nitrate rich soil.

In one study, Vitamin C appeared to protect against the risk of stomach cancer by inhibiting formation of nitrates in stomach.

Cancer of the stomach is 5 times more common in Japanese people compared to Western populations. When Japanese people migrated to the United States, they progressively acquired the low incidence of the US due to changes in their diets.

In one study conducted in Hawaii that involved both Japanese and Caucasians, the stomach cancer risk was associated with consumption of rice, pickled vegetables, and dried/salted fish, and a negative association with vitamin C intake.

One ecological study in Belgium showed a relation between the nitrate and salt consumption and stomach cancer. The analysis of this model showed that the significance of nitrate as a risk factor for stomach cancer mortality increased markedly with higher sodium levels.

Dietary habits and stomach cancer risk was studied in Shanghai, China. According to this study, risks of stomach cancer were inversely associated with high consumption of several food groups, including fresh vegetables and fruits, poultry, eggs, plant oil, and some nutrients such as protein, fat, fiber, tea and antioxidant vitamins.

By contrast, risks increased with increasing consumption of dietary carbohydrates, frequent consumption of preserved, salty or fried foods and hot soup/porridge, with irregular meals, speed eating and binge eating. This provides evidence that diet plays a major role in stomach cancer risk.

No single food can completely prevent cancer but a balanced combination of different groups can help. Appropriate diet can prevent 3-4 million cancers each year.
About the author:

Cancer is One of the Main Causes of Death Among Humans. Visit http://www.cancer-data.com, FREE web site for those who want to learn more about taking control of their health.


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Why Your Diet May Not Be Working!
 by: Nishanth Reddy

Jennifer, a middle-aged single mother with one six-year-old daughter, has been skipping sweets for a few weeks now. She’s also become a stickler for portion control. She feels as if she’s eating less than ever, and she’s been diligently exercising for an hour at a time at least four days a week. Yet, she hasn’t lost a single pound. The question is, “Why?”

This is a dilemma which affects dieters the world over. They think they are taking the steps necessary to lose weight, but nothing seems to be happening. In essence, they are trapped in a dieting rut and they don’t know how to free themselves. As a result, they become frustrated and depressed and may then engage in binge eating.

One of the problems with diets is that they are often standardized. As a result, they don’t take into consideration your individual physiology and metabolism. They provide a cookie-cutter approach to weight loss—an approach which may not work in your individual case. As a result, an increasing number of people are turning to dieticians to formulate a person weight loss strategy for them. This process has been made easier through the Internet, where you can correspond with a dietician any time of the day or night via e-mail. The dietician can also act as your personal coach, helping you through your dieting dilemmas.

Another reason that you may be failing at your diet is because of a lack of support. You may have family members who can eat whatever they want and seemingly not gain a pound. As a result, they may fill your refrigerator with junk food, leading you into temptation. Also, you may feel as if you have no one to turn to in order to discuss your weight problems. In order to solve this problem, many individuals look to psychotherapists to help them with their food-related issues. This can be particularly important if an individual has turned to purging in an effort to combat their weight problems. Bulimia is a serious disease which must be treated in order to ensure the good health of the patient. Thankfully, there are a number of treatment programs throughout the U.S. specifically focusing on bulimia.

Yet another reason for diet failure is hidden calories. You may literally be consuming calories and not even realize it. For instance, the frappucinos that are so popular today are loaded with calories—as many as 600 in a single serving! You may also be indulging in sugary sodas—another source of extra calories. By taking a few simple steps, such as eliminating the exotic coffee drinks from your diet and substituting skim milk for whole milk, you may be able to eliminate the hidden calories that are denying you dieting success.

Lack of consistency can also be a diet-killer. You might go on a diet for a while, then quit before you’ve made any measurable progress. It’s only natural to want to see quick results. The problem is that healthy weight loss involves losing only a couple of pounds a week. That means you’ll have to stay on your diet for months before you see appreciable weight loss. Discouraging? It can be, but if you keep a positive attitude you can achieve your ideal weight.

You may also be more successful in your dieting if you consider it to be a lifestyle change. Therefore, your diet becomes a meal plan for life. This means that you must change the way you look at food. It is designed to be fuel for your body, and nothing more. As a result, you should not turn to food to make you feel better or to provide you with a sense of comfort. A lifestyle change implies commitment; it means that you are prepared to follow the plan for the long haul. If you feel as if you cannot be on your diet for any appreciable length of time, perhaps it’s time to consider a different diet. Your aim ultimately should be not simply to lose weight, but to become healthier. A fad diet will not allow you to reach that milestone. Therefore, you must choose your diet carefully.


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