Three main types of dietary recommendations may be produced by public health agencies: dietary allowances DRVs , dietary goals, and dietary guidelines. Dietary allowances are quantitative guidelines for different population subgroups for the essential macro- and micro-nutrients to prevent nutritional deficiencies. Dietary goals are quantitative national targets for selected macronutrients and micronutrients aimed at preventing long-term chronic disease e. They are usually aimed at the national population level rather than the individual level.
Learning Objectives 2. Introduction 3. Concept of Adolescence Stage 1. Characteristics of Adolescence 2. Basic Needs of the Adolescents 3. Significance of Adolescence 4.
Adolescence is the period of developmental transition between childhood and adulthood. It involves changes in personality, as well as in physical, intellectual and social development. During this time of change, teens are faced with many issues and decisions. The following addresses some of the key issues that can have an impact on a teen's social development.
This makes it possible to estimate energy requirements from measurements of TEE and energy needs for growth, rather than from food intake data or from estimates of time allocation and energy costs, as were previously used. The expert consultation analysed a number of studies on TEE, growth and habitual activity patterns of children and adolescents in different parts of the world Torun, As the objective of this report is to make recommendations for healthy, well-nourished populations - thus excluding data from undernourished, overweight and stunted groups - the analysis was restricted to information from groups of healthy, well-nourished individuals. Studies using the DLW technique were the starting point for estimating energy requirements of children and adolescents. However, most of the existing data on TEE measured with DLW were obtained in industrialized countries, where energy expenditure is influenced by modern technology, school environments, sedentary pastimes, mechanized transportation and social and economic support systems that demand relatively low physical effort i.