Nutritional factors in carcinoma oesophagus: a case-control study.

1997 
: A case control study was conducted on 170 patients with oesophageal cancer. An equal number of healthy persons (attendants of patients) were included in the study as controls to identify nutritional risk factors for oesophageal cancer. The majority (55%) of the patients were of low socio-economic status and from Northern parts of India. They were predominantly male (66%). Increase in risk was associated with low consumption of green leafy vegetables, other vegetables and fresh fruits, milk and milk products. Heavy use of spices and use of very hot tea or food were also associated with increased risk. Differences in the past dietary consumption patterns of oesophageal cancer patients and controls suggest a role for nutritional factors in oesophageal cancer pathogenesis. At the same time substance abuse by cigarette or bidi smoking, alcohol consumption, paan and tobacco chewing also increased risk. After multivariate analysis, green leafy vegetables, other vegetables spices, bidi usage and fresh fruits provided protection against oesophageal cancer.
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