Epidemiological investigations have suggested a relationship between the nutrition and the incidence of various types of cancer. The aim of the study was to determine the effect of kefir (with ...different fat levels) and milk on the incidence of experimentally induced colorectal epithelial tumors. We used 120 ten-week-old male Wistar rats. In addition to a standard feeding regimen, the first experimental group received kefir containing 3.5% fat. A second group received kefir with 1.1% fat, and a third group received sterilized milk with 1.1% fat. The kefir 3.5% fat group had the highest number of adenocarcinomas. The lowest number of adenocarcinomas was found in the group given 1.1% milk fat. We found a statistically high correlation between the incidence of adenocarcinomas and the fat intake (
P = .0338), and a high statistical correlation between the incidence of all forms of colorectal epithelial tumors (aberrant crypt foci, adenomas, and adenocarcinomas) and the intake of fat (
P < .001).
In this study the nutritional habits of adults in Slovenia were studied on 2,183 individuals who were grouped into three age categories: from 18 to 25 years, 26 to 45 years and 46 to 65 years. The ...food frequency questionnaire was applied. By the computer programme Microdiet Version 9 the average quantity of nutritional substances (protein, carbohydrates, total sugar, dietary fiber, total fat, saturated and unsaturated fatty acids) and energy values were determined. We estimated frequency and time of daily meals, frequency of daily consumed food, nutritional habits and body activity with regard to adult age groups. The results were also evaluated by means of statistical analysis. It was found out that there are some significant statistical differences between adult age groups. We found out that adults in age group above 45 years have better nutritional habits.
Modern analytical methods such as radiochemical and instrumental neutron activation analysis (RNAA and INAA), and electrothermal and flame atomic absorption spectrometry (ETAAS and FAAS), were used ...to determine concentration levels of elements Ca, Mg, Mn, Cu, Zn, Cr, I, and Se in 51 carefully prepared composite samples of total daily diets from some old people's homes in different parts of Slovenia for the summer period of the year 1992. The reliability of the results was checked by the analysis of compositionally similar certified standard reference materials (SRMs). Concentration levels of all essential elements were mostly below the recommended dietary allowance values (RDA) even when only 60% of the RDA value was taken into account.
