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Nutrient
- Chemical substance found in foods, essential to life.
- *to function properly, the body must be provided with nutrients*
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Six groups of Nutrients
- Carbohydrates (CHO)
- Fats (lipids)
- Proteins
- Vitamins
- Minerals
- Water
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Carbohydrate (CHO) function
Provide energy & heat
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Fats (lipids) function
Provide energy & heat
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Proteins functions
- Provide energy & heat
- Build & repair body tissue
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Vitamins functions
- Regulate body processes
- Helps proteins build & repair
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Minerals functions
- Regulate body processes
- Helps proteins build & repair
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Water function
Regulate body processes
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Nutrition definition
The result of processes whereby the body takes in and uses food for growth, development, and maintenance of health.
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Major influences of what and why we eat
- Hunger
- Appetite
- Social life
- Body image
- Culture & religion
- Lifestyle
- Economic status
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Nutritional status
- Persons physical condition as determined by diet
- ex. iron deficiency anemia, overweight, obese, underweight
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Characteristics of good nutrition
- Alert expression
- Shiny hair
- Clear complexion
- Pink gums
- Firm abdomen
- Erect posture
- Good stamina
- Normal elimination
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Characteristic of malnutrition
- Dull, lifeless hair
- Apathy
- Blemished complexion
- Red, puffy eyes
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Primary deficiencys
Caused by inadequate dietary intake
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Secondary deficiencys
Caused by something other than diet, such as disease.
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Malnutrition
Caused by overnutrition (excessive energy or nutrient intake) or undernutrition (deficiency in energy or nutrient intake)
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Nutritional density
- Nutrient value of food compared to the calories in food.
- ex. low density = CHO, fat, low vit/min/protein
- high density = high vit/min/protein
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Role of nurse in nutrition
- Must have knowledge of sound nutrition
- Modifies diet with the dietician
- Feeds, assists with feeding, delegates feeding of patients
- Answers patients' basic nutrition questions
- Knows the relationship of foods and medications
- Knows the characteristics of good and poor nutrition
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Lacto-ovo-vegetarian
Eats milk/eggs
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Lacto-vegetarian
Eat milk
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Carbohydrates
- Nutrient, least expensive, most abundant
- Made up of Carbon, Hydrogen & Oxygen (CHO)
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Carbohydrate functions
- Provides energy & heat
- Spares protein
- Required for normal fat metabolism
- Provides fiber, bulk for normal digestion
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Carbohydrate food sources
- Plant: cereal grains, vegetables, fuits, nuts, sugar
- Animal: milk
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Monosaccharides
- simple sugars, easily digested
- 1) glucose (dextrose): used in IV fluids, found in blood stream
- 2) fructose: sweet, found in fruits, veggies, honey
- 3) galactose: product of digestion of milk
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Disaccharides
- double sugars, must be broken down into single sugars to be absorbed into the body
- 1) sucrose: all forms of sugar, molasses, sugar beets
- 2) maltose: intermediate break down form of starch
- 3) lactose: milk sugar
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Polysaccharides
- complex carbohydrates, must be broken down into double then single sugars to be absorbed into the body
- 1) starch: grains, potatoes, winter squash, peas
- 2) other polysaccharides: Glycogen (storage form of CHO in the body), Fiber or Roughage (cellulose a major source), Soluble vs Nonsoluble Fiber, Nonfood (pectin, Metamucil, Citracel)
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Benefits of fiber
Decreases incidence of colon cancer, hemmorhoids, softens stool, decreases BG & cholesterol level.
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Too few CHO
- Weight loss & fatigue
- Ketoacidosis
- Constipation
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Too many CHO
- Obesity
- Tooth decay
- Flatulence, diarrhea
- Decrease appetite for other nutrients
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Sugar substitutes
- Aspartame (Nutrasweet)
- Saccharin (Sweet & Low)
- Sucralose (Splenda)
- Stevia (Truvia)
- Bulk sugar (Xylitol, Lactitol, Sorbitol)
- Sugar alcohols
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Fats functions
- Provide energy & heat
- Spare protein
- Carries essential fatty acids & fat soluble vitamins (Vit A,D,E,K)
- Provides flavor & satiety
- Protects organs & bones
- Insulation from cold
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Fat food sources
- Animal: meat, skin on poultry, milk (except skim), butter, cheeses, egg yolks, fatty fish (tuna/salmon)
- Plant: cooking oils, margarine, nuts, avacados, coconut, chocolate
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Invisible fats
Not able to be seen (cream, eggs, meat, pastries, nuts, milk)
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Visible fats
Able to be seen, purchased & used as fats (butter, oil, margarine, lard)
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