So Far… 6 classes of nutrients Calorimeter and energy Scientific method in nutrition science Nutrition claims Public health Individual nutritional status

Nutrition Adequacy How much do you need to consume? Standard values

Recommended Dietary Allowance (RDAs) Published in 1943 Food Guide Pyramid Nation’s first official standards National Academy of Science (IOM) Replaced by DRIs (why?) http://www.disabled-world.com/artman/uploads/pyramid.jpg outdated 

Dietary Reference Intakes (DRIs) Published in 1994 Choose My Plate USA and Canada National Academy of Sciences (IOM) Include 4 sets of standards Depends on sex and life stages Estimation of nutrient requirement for a healthy population and individuals

How is this different from nutrition adequacy? Energy Adequacy How is this different from nutrition adequacy?

Estimated Energy Requirements (EERs) Average energy intakes needed to maintain weight (or growth) for an individual in a population Similar to DRI (why?) but more specific (why?) 354 – (6.91)(age) + PA[(9.36)(wt) + (726)(ht)] for females 662 – (9.53)(age) + PA[(15.9)(wt) + (540)(ht)] for males PA: physical activity (Table 2.2 pg 47) Acceptable Macronutrient Distribution Ranges (AMDRs) Distribution of energy sources 45-65% of total energy from carbohydrates 10-35% from proteins 20-35% from lipids

Question I just used the formula in this book and calculated my EER to be 2,900 kcal/day. If I ate that much, I am positive that I would gain weight. Does this mean that there is something wrong with my metabolism?

Answer No. Keep in mind that the EER represent the Estimated Energy Requirements for individuals of similar sex, weight, height, and activity patterns. Your individual energy requirement may be somewhat more or less depending on other factors such as body composition and genetic factors.