• Papers from the Brian L. Walker Memorial Symposium on Lipids and Cancer Presented at the 76th AOCS Annual Meeting in Philadelphia, Pennsylvania, May 1985
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Calories, fat and cancer

Abstract

The experiments reported are part of our effort to dissociate the tumor-enhancing effects of dietary fat and high caloric intake. Rats either were fed ad libitum diets containing 4% corn oil or their calories were restricted by 40% and their diets contained 13.1% corn oil. Incidence of 7,12-dimethylbenz(a)anthracene (DMBA)-induced mammary tumors was 80% in rats fed ad libitum and 20% in those fed the calorie-restricted diets. Incidence of 1,2-dimethylhydrazine (DMH)-induced colon tumors was 100% in rats fed ad libitum and 53% in those whose caloric intake was restricted by 40%. The tumor yield (tumors per tumor-bearing rat) was significantly lower in rats on caloric restriction. In another series, rats were fed diets containing 5, 15 or 20% corn oil ad libitum or were fed calorie-restricted (by 25%) diets which provided 20 or 26.6% corn oil (therefore, the same absolute amount of fat was consumed in each of the pair-fed groups). Tumor incidence and tumor yield in the two calorie-restricted groups were similar to those seen in the rats fed 5% fat ad lititum; tumor burden (total g of tumor) was 45–65% lower in the calorie-restricted rats. The data suggest that caloric intake is a more stringent determinant of tumor growth than fat intake.

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Correspondence to David Kritchevsky.

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Kritchevsky, D., Weber, M.M., Buck, C.L. et al. Calories, fat and cancer. Lipids 21, 272–274 (1986). https://doi.org/10.1007/BF02536411

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Keywords

  • Caloric Restriction
  • DMBA
  • Tumor Incidence
  • Restricted Diet
  • Final Body Weight