Typical intake

According to the food categories mentioned above, the percentage distribution of trace element intakes for the population of northern Italy could be estimated. As an example, the typical intakes (percent) of Cd, Co, Se, and Sn are shown in Figures 10.3-10.6. 

The minimal requirement for potassium is alrout 1.6 to 2.0 g/day. Fruits and vegetables contain Wgh levels of potassium. Persons who consume large amounts of these foods may have a potassium intake of 8 to 11 g/day. A more typical intake is 2.5 g/day Human milk contains about 12 mM potassium. 

The RDA for magnesium Ls 4,5 mg/kg body weighf. Thus, ihe KDA for a 70-kg marr is 315 mg. The typical intake of Mg in the United States Ls about 300 mg/day. Plants and meats contain about 0.2 to 0.3 mg Mg/kg of food- Milk is a relatively poor source of Mg. Human breast milk contains about 1.4 mM magnesium- Thus, a typical rate of milk production 750 ml/day) results in the loss of about 1.0 ntmol... 

An RDA for Mo has not been set, though the intake range of 75 to 250 pg/day has been recommended by the Food and Nutrition Board. This range is based on the typical intake of the mineral (0.1-0.2 mg/day) (Freeland-Graves and Tumlund, 1996). Apparently, Mo deficiency rarely occurs. Molybdenum deficiency cannot easily be induced by feeding animals an Mo-deficient diet. This is because it is difficult to remove or eliminate the molybdenum present as a trace contaminant... 

Man s diet has always contained fat but the amount and type varies. Typical intakes in Europe and North America are between 80 and 150 g day which represents 30-40% of dietary calories. The nutrient fat per capita has been maintained, with a slight overall rise, this century. However, the same foods are not always responsible for the fat consumed (Rizek et aL, 1974). Salad and cooking oils have always been major contributors followed by dairy produce and shortening in the period 1910-1930 but by margarine, shortening and meat in the period 1930-1960. Since that time the rise has been due almost entirely to a rise in meat consumption. 

Is the typical intake of CLA by Americans sufficient to offer health benefits such as cancer prevention By using the lower value (800 mg/d) of the daily amount that is necessary for beneficial health effects that was calculated previously by extrapolation from rat data, the typical intake by Americans probably is insufficient. If this is true, then it behooves the scientific community to develop ways to increase the CLA content of typically consumed foods. 

The dietary intake of lead has been estimated by a number of methods, the principal ones being firstly the analysis of duplicate portions of meals for total lead and secondly a composite method, whereby typical lead concentrations in the various components of a diet are separately defined and the total lead intake becomes the sum of the lead intakes from the various components, as in Table 7.4. Some of the more recent data, reported since 1970, are summarized in Table 7.5. Clearly there is a high degree of variability in dietary lead intake from individual to individual, as well as from country to country. Typical intakes probably lie in the range 100-200 Mg day for adults and somewhat lower but not proportionately so, for children at 50-150 Mg day -... 

Examples of Macronutrient Content of Diets Containing Acceptable Macronutrient Distributions and Typical Intakes at Variable Energy Levels for Women (121 lb or 55 kg)... 

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