Health Sciences 1002A/B Chapter Notes - Chapter 5: Health Canada, Listeriosis, Scurvy

• School: Western University
• Department: Health Sciences
• Course: Health Sciences 1002A/B
• Professor: Jeannie Samuel

Document Summary

Essential nutrients substances the body must get from foods because it cannot manufacture then at all or fast enough to meet its needs (proteins, fats, carbohydrates, vitamins, minerals, water. Macronutrient an essential nutrient required by the body in large amounts. Micronutrient an essential nutrient required by the body in small amounts. Digestion process of breaking down foods in the gastrointestinal tract into compounds the body can absorb. Energy in food expressed by kilocalories: 1 kilocalorie = the amount of heat needed to raise the temperature of 1l of water by. 1 degree: person needs about 2000 kilocalories a day. 3 essential nutrients provide energy: fat= 9cal/g, protein= 4cal/g, carbs= 4cal/g. Form important parts of the muscles, bones, blood, enzymes, hormones, cell membranes. Reccommended daily protein intake = 0. 8g/kilo (17% of total daily cal) Very high protein diet can strain the kidneys. Supply energy; insulate, support, cushion organs; provide medium for absorption of fat- soluble proteins.