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Esophageal Cancer Risk Reduced by Intake of Plant Based Nutrients

by Raja Nandhini on  February 08, 2012 at 1:57 PM Health Watch   - G J E 4
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A recent study highlights the advantage of consuming plant-based food in reducing the risk of highly lethal Esophageal Squamous Cell Cancer.
Esophageal Cancer Risk Reduced by Intake of Plant Based Nutrients
Esophageal Cancer Risk Reduced by Intake of Plant Based Nutrients

Esophageal Squamous Cell Carcinoma, a major type of Esophageal cancer that affects the inner lining cells of the esophagus or the food pipe. The symptoms associated with this type of malignancy include pain while swallowing food and regurgitation, i.e. backward flow of the food.

The study conducted in the high-risk region of Iran for esophageal squamous cell carcinoma, assessed the dietary intake of around 47 patients who were diagnosed with this cancer within six months and 96 in the control group, using a semi quantitative food frequency questionnaire. The participants were adults with normal BMI and hence the results are independent of risk due to adiposity.

The other factors that were considered in the study included the socio-demographic details, smoking history, eating habits, symptoms of gastroesophageal reflux disease and family history of cancer.

Experts, after analyzing the dietary intake of the participants, concluded that the risk of Esophageal cancer reduces with increased intake of nutrients, like carbohydrates, dietary fibers, folate, vitamin A, β-carotene, vitamin C, which are abundant in plants based food.

While, the risk increases with higher consumptions of saturated fatty acids, discretionary calories, sodium and fat. Discretionary calories are the extra calories consumed in addition to basic nutritional needs. These are mainly derived from solid fat and added sugar, found in food like cheese, meat, soda, etc.

The researchers observed that the participants with higher carbohydrate and dietary fiber intake had 78% and 71% reduced risk of esophageal squamous cell cancer, respectively. Folate, selenium and vitamin E were found to be most protective micronutrients against damages to esophagus, with folate and vitamin E associated with 98% reduction in risk of this cancer.

Along with these nutrients, intake of unsaturated fatty acids, commonly known as the omega-3 fatty acids were reported to cut down the risk by 68% among the participants.

Though the association of nutrient intake and Esophageal cancer risk had been clearly analyzed, the experts suggest that further studies which evaluate the dietary intake before cancer diagnosis are needed to clarify whether changes in dietary practices and/or vitamin and mineral supplementation can reduce the incidence of this cancer.

Reference: Macronutrients, vitamins and minerals intake and risk of esophageal squamous cell carcinoma: a case-control study in Iran; Mahsa Jessri et al; BMC Nutrition Journal 2012.

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