HLTH 331 Study Guide - Comprehensive Midterm Guide: Socioeconomics, Failure To Thrive, Phenylalanine

• School: Queen's University
• Department: Health Studies
• Course: HLTH 331
• Professor: Tracy Mc Donough

Document Summary

Nutrients = chemical substances that come from food and used in the body for energy, structural materials, and regulating agents to support growth, maintenance and repair of body tissues. Essential nutrients = not made in the body/not made by the body in amounts required; need to get from outside sources like food, drink, supplements. Needed in the body in large amounts each day: carbohydrates. Includes sugars (mono- and disaccharides), starches (polysaccharides) and fibre. Starches found in breads, legumes (peas, lentils, beans) Sugars found naturally in fruit, some vegetables, milk (products); added to processed foods. Fibre does not provide energy (found in vegetables, legumes, whole grains: lipids (fats/oils) Mono-, di-, tri-glycerides = glycerol and fatty acid chains (triglycerides most common in our diet; have three fatty acid chains) Can be saturated or unsaturated depending on individual fatty acid chains. Phospholipids = glycerol and 2 fatty acid chains and phosphate group. In foods: emulsifier (i. e. lecithin in egg yolks)