HLSC 1F90 Lecture Notes - Lecture 16: Dietary Reference Intake, Trans Fat, Nutrient
2 Oct 2017
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Document Summary
Cgf advises people to eat a certain number of serving from each group based on a scientific, physiological understanding of human nutritional requirements. Essential nutrients are substances the body must get from foods because it cannot manufacture them at all or fast enough to meets its needs. 50 essential nutrients, including: water, various vitamins, various minerals, certain amino acids (building blocks of protein, certain fatty acids. Carbohydrates are not always considered essential nutrients --- in textbook, it says it is. Nonessential nutrients are substances the body can make in sufficient quantities (e. g. , cholesterol) Macronutrients are required in large amounts: carbohydrates, lipids (fats, protein, water. Micronutrients are required in small amounts: vitamins, minerals. Energy-producing nutrients provide energy to the body: carbohydrates, lipids (fats, protein. Non-energy-producing nutrients assist in releasing energy from energy-producing nutrients: vitamins, minerals, water. Technically, energy in food is expressed as kilocalories: 1 kcal= amount of energy needed to heat 1l of water by 1 degree celsius.
