(Brussels sprouts, kohlrabi and cauliflower); (6) Consume alcoholic beverages only moderately; and (7) Only moderately consume salt-cured, smoked and nitrate cured foods. (American Cancer Society, 1984, pp. 122-123) What little was understood about nutrition as it relates to cancer rates is summed up in the following specific food categories by the American Cancer Society in its 1984 report:
Food Additives -- chemicals of a variety are added to foods for improving the color and flavor of the foods and to preserve the foods. While some of these have been banned due to having been shown to cause cancer in animals others are believed to protect against carcinogens.
Vitamin E -- Vitamin E is an oxidant and while it may prevent cancer in animals more research is needed of the role Vitamin E plays in preventing cancer in humans.
Selenium -- This substance may be poisonous if wrongly used however, there is evidence that this trace element may provide some protection against the individual developing cancer.
Artificial sweeteners -- there is some evidence that these cause cancer in animals. The long-term risk of developing cancer due to use of the artificial sweeteners has not been fully examined in research.
Coffee -- only inconclusive evidence exist relating to the dangers of coffee.
Meat and Fish Cooked at High Temperatures (Frying, Broiling) - Studies show that this method of cooking meat 'gives rise to a number of potential mutagens (genetic changing agents) in bacteria and that some of these have induced cancer in animals. This is still under investigation (as of 1984).
Cholesterol -- No evidence exists that cholesterol leads to the development of cancer.
The National Cancer Institute reports in its June 11th 2009 publication entitled: "Nutrition in Cancer Care (PDQ) that nutrition plays "major (but not always fully understood) roles in many aspects of cancer development and treatment." (Reeves, et al., 2007, cited in National Cancer Research Institute, 2009, p.1) Malnutrition is stated to be a problem that is a common one among cancer patients and that this issue has been identified as "an important components of adverse outcomes, including increased morbidity and mortality and decreased quality of life. Weight loss has been identified "as an indicator of poor prognosis in cancer patients." (McMahon, Decker, and Ottery, 1998, as cited in National Cancer Institute, 2009, p.1)
It has been shown in research that patients with lung and gastrointestinal cancer at the rates of 60% and 80% respectively, "...have already experienced a significant weight loss, generally defined as at least 10% loss of body weight in 6 months time." (National Cancer Institute, 2009, p.1) Good nutrition assist the patient with cancer maintain their weight and the nutrition stores of the body and this results in "relief from nutrition impact symptoms..." And an improved quality of life. (American Cancer Society, 2000, cited in, p.1)
Nutrition impact symptoms identified by the National Cancer Institute include those of "...anorexia, nausea, vomiting, diarrhea, constipation, stomatitis, mucositis, dysphagia, alterations in taste and smell, pain, depression, and anxiety" all of which may reduce the chances of the cancer patient for survival. It is important that the "eating practices of individuals diagnosed with cancer...be assessed throughout the continuum of care to reflect the changing goals of nutritional therapy." (National Cancer Institute, 2009, p.1) The neoplastic disease progression is stated to often jeopardize the individual's nutritional status and that the changes in nutritional status generally begin at diagnosis "...when psychosocial issues may also adversely affect dietary intake, and proceed through treatment and recovery." (National Cancer Institute, 2009, p.1) Stated as the second most common secondary diagnosis in individuals who have been diagnosed with cancer is that of 'Protein-calorie malnutrition (PCM)' which is known to stem from the failure of intaking carbohydrate, protein and fat in large enough quantities to meet the requirements of metabolism or the absorption of macronutrients reduction. Multiple factors in cancer affect PCM and this is stated to specifically include: "...anorexia, cachexia, and the early satiety sensation frequently experienced by individuals with cancer. These factors range from altered tastes to a physical inability to ingest or digest food, leading to reduced nutrient intake." (National Cancer Institute, 2009, p.1)
Also increasing the incidence of PCM are "...cancer-induced abnormalities in the metabolism of the major nutrients..." (National Cancer Institute, 2009, p.1) These abnormalities are stated include such as "glucose intolerance and insulin resistance, increased lipolysis, and increased whole-body protein turnover. If left untreated, PCM can lead to progressive...
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