Nutrition Exam 1 Flashcards
(148 cards)
Appetite
-strongly impacted by external factors
-psychological drive (conscious)
Takes you past being full
Hunger
- controlled by internal factors
- physiological drive (unconscious)
Satiety
- no longer a desire to eat, satisfied
- relationship btwn feeding center (hunger controlled by this) and satiety center (gets stimulated by eating, says we are full)
Nutrition
Science tht links food to health and disease
- how food nourished our bodies and influences our health
- how we consume, digest, metabolize, store, excrete
Food
Plants and animals we eat
Wellness
- proper nutrition supports this
- includes physical, emotional, spiritual, and occupational health
- lifelong process tht starts with the nutrition a baby receives in the uterus
Two key components of wellness
- nutrition
- physical activity
Poor Nutrition causes…
Deficiency diseases
Ex. Scurvy (vitamin c) pellagra (vitamin b)
Poor Nutrition plays a role in the development of…
Osteoporosis
Osteoarthritis
Cancer
Poor nutrition is associated with…
Chronic diseases
Health disease, stroke, type 2 diabetes, obesity
Good nutrition…
Improves health, supports wellness, prevents and reduces risk of disease
Serving size
- amount of food recommended according to dietary guidelines
- term also used by manufacturers to denote nutrition info
Portion size
Actual amount of food consumed
Use comparison items to figure out portion size
Healthy People
- dietary guidelines
- updated every 10 years
- want to achieve health equity
- increase number of adults at a healthy weight
- decrease those who are obese and overweight
- increase fruit and vegetable consumption as well as a higher variety of these
Nutrients
- chemical substances critical for growth and development
- found in food
- organic and inorganic
Organic
- carbon (and hydrogen)
- essential components in all living organisms
- carbohydrates, lipids, proteins, vitamins
Inorganic
- do not contain carbon
- include minerals and water
6 classes of nutrients
Carbohydrates Lipids Proteins Vitamins Minerals Water
Carbohydrates
-primary source of energy for the body (neurological functioning and physical exercise)
-chains of C, H, O
Sources
Grains, wheat, rice, fruits/ vegetables, legumes (lentils, beans and peas), nuts and seeds, milk products
Calories found in carbs, proteins, fat, and alcohol
Fat-9 kcal/ g
Alcohol-7kcal/g
Carbs-4kcal/g
Protein-4kcal/g
Lipids
- diverse group of substances tht are insoluble in water
- fats and oils
- Composed of C, H, O
- main energy source when at rest and during low to moderate exercise
- stored as adipose tissues
- provide fat soluble vitamins
Types of lipids
- most common is triglycerides (TAG)
- phospholipids : are emulsifiers(take fat and disperse it throughout a liquid)
- sterols: one example is cholesterol
Proteins
-contain C, H, Nitrogen
-not a preferred energy source bcuz use them for other things
Such as
-regulate metabolism and fluid balance
-build muscles
-maintain bone and repair damage
Protein sources
-meats, dairy, legumes, nuts and seeds, small amounts in grains and veggies