Review B (NEW not from exam 1 or 2) Flashcards
emotional vs physical hunger
emotional hunger:
- sudden
- needs to be satisfied instantly
specific comfort foods
- isn’t satisfied after eating
- triggers feelings of guilt, shame, powerlessness
physical hunger:
- gradual
- hunger can wait
- open to diff food options
- hunger stops when full
- doesn’t make you feel bad
4 mindful points
mind: am i tasting the food or zoning out
body: how does my body feel pre and post eating
feeling: how do i feel about the food
thoughts: what thoughts does the food bring? memories? beliefs? fears?
fat vs water soluble vitamins
fat soluble: A, D, E, K
water soluble: B vitamins and C
antioxidants
act against free radical formation
- Examples: A, C, E, and beta carotene
bioavailability and vitamins
bioavailability: the degree to which a nutrient is absorbed from foods and used in body
- vitamins can be destroyed by air, water, heat
- air exposure can destroy A, E, K
- provitamins can be converted to vitamins by the body
Vitamin toxicity
hypervitaminosis: vitamin toxicity
- doesn’t happen from a balanced diet only a result of a megadose of the vitamin
- there are UL for some vitamins
how to get vitamins
- food is best
- fortified food can can help but shouldn’t replace regular foods rich in vitamins
water and the body
- most abundant substance in body
- extracellular fluids: interstitial fluids b/w cells and fluids in blood
- electrolytes: minerals that help maintain fluid balance
- water is the universal solvent b/c so polar
- water regulates body temp
food marketing
- companies spend $10 billion annually to promote their product
- promote unhealthy foods not fruit/veg
- college age and young adults are main targets of advertisers
from farm to market
- much of your food comes from small family run American farms
- over 2 million farms in US mostly in Midwest, great plains, CA
- fewer than 960,000 American farmers (1% pop) produce food for population of 300+ million
challenges and support of farming
challenges:
- high cost
- demand for low prices
- competition
- depend on natures cooperation
Support:
- computers, internet allow precision agriculture
- gov subsidies for commodity crops
Corn Belt
produces 40% of worlds total corn crop
top 3 crops in US
corn, soybeans, wheat
- mostly to feed livestock not humans
food imported to US
- exports more food than it imports
- most coffee, cocoa, spices are imported
- coffee from Colombia or brazil
sustainability of food system
sustainability; meets needs of present without compromising future generations needs
concerns about:
- soil use: improper use degrades topsoil, endangers food soil web
- energy use: fossil fuels harm environment so use alternatives to help
- water use: growing consumption so conservation is needed
- reducing food waste: 30-40% of all food is wasted
how far did your food travel
- most sustainable foods are locally grown and plant based
- small farms often provide food to people in their community through farmer markets, local grocery store contracts, community supported ag
- buying food from local farmers doesn’t mean its grown sustainably
Pesticides
- they control pests that threaten food supply
types of pesticides: - herbicides = kill weeds
- Antimicrobial = kill microorganisms (bacteria, viruses)
- fungicides = kill fungi (mold)
- biopesticides = derived from natural materials, include sex pheromones
- organophosphates = affect nervous system of pests
-reducing pesticides in food: wash, peel & trim foods and eat a variety of foods
safety of food in US
- 1 in 6 people in US get food borne illnesses
- 3,000 die every year
- one of the safest food supplier in the world
- many gov agencies work together to ensure food safety
pathogens and food
- pathogens can be spread by fecal to oral transmission (caused by poor hygiene)
- viruses require a living host to survive like Hep A and Norovirus (gastroenteritis)
microbiome
microbiome: the collection of all microbes
- bacteria, fungi, viruses and their genes, that naturally live on our bodies and inside us
- microbiota is the actual bugs and microbiome is the bugs AND their genes.