Unit 1 Flashcards
What is nutrition?
An interdisciplinary science that studies food and health with a focus on the nutrient and chemical properties of food
What are the 8 basic concepts of nutrition?
- Food is a basic need of humans
- Food provides energy, nutrients and other substances required for health
- Poor nutrition can result from both inadequate and excessive nutrient intake
- Malnutrition an result from poor diets, disease, genetic factors or a combination of these
- Some groups of people are at higher risk of becoming malnourished
- Poor nutrition can influence the development of certain chronic diseases
- Adequacy, variety, and balance are key points of a healthful diet
- There are no “good” or “bad” foods
What is food security?
access at all times to sufficient supply of safe, nutritious foods
What is food insecurity?
limited or uncertain availability of safe, nutritious foods - or ability to acquire them in socially acceptable ways
What are potential causes of food insecurity?
- poverty
- absence of supermarkets
- access to inexpensive, high calorie food (fast food)
- limited cooking facilities
What are calories?
A unit of measure that represents the amount of energy supplied by food
What are nutrients?
chemical substances used by the body (help sustain growth and development
What are the 6 nutrients?
- Carbohydrates (CHO)
- Protein
- Fat
- Vitamins
- Minerals
- Water
What are the 3 energy nutrients?
Carbohydrates, Protein, Fat
How do we know what is inadequate or high intake?
Using the RDA (recommended dietary allowance) or the UL (upper limit)
RDA - meets nutrient needs for 97-98% of individuals
UL- Tells us if we are getting too close to toxicity
What are the 3 nutritional deficiencies?
- Underconsumption - famine
- Over consumption - typical western diet
- Under nutrition - enough calories, not enough nutrients
Who could be at higher risk of becoming malnourished?
Infants (high energy needs)
pregnant women
elderly
ill or recovering from illness
What is Orthorexia Nervosa?
Unhealthy fixation with eating healthy