Nutrition Flashcards
Essential Nutrients
Macronutrients:
Carbs, Protein, Lipids
Micronutrients:
vitamins and minerals
Carbohydrates
function
- primary source of energy for muscle and organ function
- facilitates insulin secretion
- absorption of Na & excretion of Ca
- fiber = facilitates in elimination of waste & fulfills appetite
Types of Carbohydrates
Sugar
Fiber
Starch
Sources of Carbohydrates
SUGAR
honey, table sugar, milk, sugar cane, molasses, sugar beets, corn syrup, and fruits
FIBER
plants such as grains, vegetables, and legumes
STARCH
insoluble, nonsweet forms of complex carbs. grains, potatoes, legumes. processed foods, bread, flour and cereal
Proteins
function
- tissue growth, maintenance and repair
- production of digestive enzymes, hormones, lymphocytes and antibodies
Essential amino acid vs. Nonessential amino acid
essential amino acid = NOT made by body
nonessential amino acid = MADE by body
Types of Protein
COMPLETE protein
- all essential aminos needed for protein synthesis
INCOMPLETE protein
- doesn’t include all essential aminos
Sources of Protein
COMPLETE
eggs, cheese and milk.
soy is the only complete protein that doesn’t come from an animal
INCOMPLETE
nuts, corn, wheat, beans, seeds and brown rice
* complete protein = 2 incomplete proteins
Nitrogen balance
reflects extent of protein anabolism and catabolism in the body
(-) nitrogen balance = nitrogen loss > intake
ex: burns, malnutrition
(+) nitrogen balance = nitrogen loss < intake
Lipids aka Fats
function
- main source of fuel for the body
- assist in absorption of fat soluble vitamins A, D, E, K
- formation of adipose tissue…..cushions vital organs and aids in thermoregulation
- lubricates skin
- essential constituent of cell membrane and function
Types of Lipids
GLYCERIDES
Mono, Di and Tri
CHOLESTEROL
body synthesizes 75%, 25% is provided by dietary source
PHOSPHOLIPIDS
- LDL = “BAD cholesterol” = sat fats ↑ LDLs in blood causing fatty deposits on vessel walls = CVD
- HDL = “GOOD cholesterol” = moves cholesterol from bloodstream to liver
Types of Dietary Lipids
SATURATED fat
bad fat
TRANS fat
intake ↑ LDL cholesterol
MONOUNSATURATED fat
good fat
POLYUNSATURATED fat
good fat
Sources of Lipids
CHOLESTEROL
beef & pork liver or heart, fish, poultry, dairy, egg yolk
Sources of Dietary Lipids
SATURATED fat
whole milk, butter, cheese, ice cream, red meat, coconut products, lard, chocolate, palm oil, and cocoa butter
MONOUNSATURATED fat
olive oil, canola and peanut oils: nuts, cashews, almonds, peanuts, avocados
POLYUNSATURATED fat
corn, safflower, soybean, sesame, cotton seed oils: nuts and seeds and fish
TRANS fat
veggie shortening, commercial baked goods, deep-fried chips, fast foods and most margarines
Vitamin
functions
- necessary to catalyze metabolic functions
- act as coenzymes in enzymatic systems
- not made by body
Types of Vitamins
FAT SOLUBLE
- vitamins A, D, E, K
- absorbed from intestines
- stored in liver & adipose tissues
- too much = toxicity
- deficiency = inadequate intake or diseases inhibit fat digestion and absorption
WATER SOLUBLE
- vit C, thiamin, ribofalvin, niacin, B6, folic acid, B12, pantothenic acid, biotin
- need daily b/c body doesn’t store. it gets rid of excess through urine
FAT SOLUBLE (function)
VITAMIN A
- night vision
- cellular growth
- healthy mucous membrane
- supports bone and teeth growth
VITAMIN D
- essential for bone and teeth growth
- absorption of Ca
VITAMIN E
- healthy immune system
- protects vitamin A and unsaturated fatty acids from oxidation
VITAMIN K
- blood clotting factor
- bone development
Vitamin A
source
- pumpkin, sweet potatoes, carrots, spinach, collards, broccoli, cabbage, squash,
- apricots, cantaloupe, fruit
- liver
- fortified milk, butter cream, egg yolk
Vitamin D
source
- fortified dairy products and egg yolks
- fatty fish and fish oils
- synthesized by sun
Vitamin E
source
- milk, butter, marg, veg oil, shortening
- nuts, eggs and fish
- dark green, leafy vegetables
Vitamin K
source
- green leafy vegetables (kale, turnip greens, spinach and collards)
- liver
Vitamin A (deficiency & excess)
Deficiency:
- night blindness, impaired vision, bone growth ceases
Excess:
- double vision, headaches, liver damage, bone abnormalities
Vitamin D (deficiency & excess)
Deficiency:
Adults - osteomalacia (soft fragile bones of pelvis and spine and legs)
Children - rickets (impaired growth plates. soft and fragile bones, growth retardation, bowlegs)
Excess:
- kidney stones, muscle bone weakness, excessive bleeding, calcification of soft tissue
Vitamin E (deficiency & excess)
Deficiency:
- ↑ RBC hemolysis
Excess:
- nontoxic
Vitamin K (deficiency & excess)
Deficiency:
- hemorrhaging
Excess:
- no symptoms
Factors Affecting Nutrition
Developmental Gender Ethnicity and Culture Beliefs About Food Personal Prefs Religious Practs Lifestyle Economics Medications and Therapy Health Alcohol Consumption Advertising Psychological Factors
Nutritional Variations Throughout the Life Cycle
YOUNG ADULTS
- females iron intake 18 mg/day
- Ca is needed to maintain bones and help ↓ chances of developing osteoporosis
- adequate vitamin D for Ca absorption
- lowfat and low cholesterol diet plays a role in prevention and Tx of CVD
- prevent obesity = risk for HTN and CVD
MIDDLE AGED ADULTS
- eat balanced diet paying special attention to protein, Ca.
- limit cholesterol and caloric intake
- 2-3 L of fluid should be included in daily diet
- postmenopausal women need more Ca and vitamin D to ↓ chances of osteoporosis
- vitamins A, C, E, can help ↓ risk of heart disease in women
ELDERLY
- fewer calories b/c lower metabolic rate, ↓ in physical activity
- some may need more fiber for fullness
- tooth loss, impaired sense of take and smell may affect eating habits
- ↓ saliva, gastric juice secretion, GI absorption
Nursing Care for ASIANS
- Encourage steamed food rather than fried
- Discourage fried noodles. rice, eggrolls, tempura battered and fried foods and spare ribs to ↓ fat intake
Nursing Care for LATINOs
- Encourage chicken, rice and beans ↓ fat intake. Salsa to add spice
- Discourage fried!!
- No cheese or sour cream but low fat is good
Why should Vitamin C be taken daily?
It is absorbed immediately and not stored
Negative Affects of Alcohol
- high in calories = weight gain
- substitutes food in diet and ↓ appetite
- ↑ demand for vit B b/c it metabolizes alcohol
Affects of Medications and Therapy on Nutrition
Antineoplastics, Interactions and w/ or w/o foods
- Antineoplastics can cause stomatitis, anorexia, nausea, vomiting, and diarrhea and diminish energy
- Drug interactions (ie: Coumadin and vit K = bad b/c ↓ effectiveness of drug
- Some meds need to be taken w/ foods because they are irritating to the stomach (ie. aspirin) or on an empty stomach to be better absorbed (ie. synthroid)
Affects of Medications and Therapy on Nutrition
organ damage, radiation
- Some medications can damage the liver (hepatoxicity) or kidneys (nephrotoxicity) if daily dose is exceeded
- radiation can cause dysphagia , altered taste, ↓ salvation, anorexia, fatigue
Affects of Physical Health on Nutrition
- lack of teeth; inability to adequately digest food mechanically.
- food allergies or lactose intolerance
- factors ↑ BMR = need for more calories and fluids (fever, growth period, cold environment, prolonged physical exertion, disease processes)
- Traumatic injuries and large draining wounds demand protein and vit C
- DM, HTN, HD, GI disorders, cancer, CVD etc. = interfere with absorption, metabolism, transport, and utilization of nutrients and excretions of the by products of nutrition