Nutrition Flashcards
resting energy expenditure (REE)
BMR plus energy to digest meals and perform mild activity.
60-75% of daily needs
basal metabolic rate (BMR)
the energy required for a person at rest; the energy needed to maintain breathing, circulation, heart rate, and temperature
nutrients
the elements supplied by good that are necessary for body processes and function.
carbohydrates, fats, proteins, water, vitamins, minerals
carbohydrates
- main source of energy in the diet
- saccharides
- -simple carbohydrates (sugars): monosaccharides and disaccharides
- -complex carbohydrates (starch, glycogen, fiber): polysaccharides
Glycemic index
- the effect on blood glucose levels and insulin response
- food that releases glucose rapidly into the bloodstream have a high glycemic index
- foods with low glycemic index help with weight loss, promote endurance, and decrease risk of heart disease
protein
- essential for growth, maintenance, and repair of body tissue
- blood clotting, fluid regulation, and acid-base balance require protein
- work as defence
- can be used for energy
- part of body structure
amino acids
simplest form
- essential: provided in diet
- nonessential: can be synthesized by body
saturated or unsaturated fat
- monounsaturated fatty acids: vegetable fats (healthy)
- polyunsaturated fatty acids (healthy)
- saturated fat: animal fat (raises cholesterol
trans fatty acids
- mostly found in prepared foods
- raise LDL
- lower HDL
cholesterol
- not a fat
- occurs naturally in animal goods but is also synthesized by the liver
- deposits in blood vessel walls causing atherosclerosis
fats
- cushion vital organs
- insulate
- protect cell membranes
- provide storage form of energy
water
- muscle contains more water than any other tissues except blood
- cell function depends on a fluid environment
- helps regulate temperature and acts as a solvent
- 60-70% of body weight
vitamins
- essential to normal metabolism
- depend on dietary intake
- highest vitamin content is found in fresh foods used quickly
fat soluble vitamins
vitamin A, D, E, and K
water soluble vitamins
vitamin C and B complex: easily destroyed and not stored in the body
hypervitaminosis
results from megadoses
minerals
- inorganic elements essential as catalysts in biochemical reactions
- not broken down during digestion
- become part of the structure of the body and its enzymes
digestion
mechanical breakdown that results from chewing, churning, and mixing with fluid, as well as chemical reactions by which food is reduced to its simplest form
begins in the mouth and ends in the small and large intestines
absorption
intestine is the primary site
metabolism and storage of nutrients
anabolic (building up) and catabolic (breaking down) reactions
dietary reference intakes (DRIs)
range of nutrients, vitamins, and minerals needed whole also avoiding deficiencies or toxic irises
- adequate intake
- estimated average requirement
- recommended dietary allowance
- tolerable upper intake level
lactation
500 Kcal per day above the allowance
five major areas to assess nutrition
- anthropometry
- laboratory and biochemical tests
- dietary history and health history
- clinical observation and physical examination
- dietary history
FASTCHECK
- food preferences
- allergies
- symptoms
- twenty-four hour recall
- chewing
- hunger
- elimination
- chemical substances
- knowledge