Chapter 5 - Nutrition Flashcards
Nutrition
the science of the substances found in food that are essential to life
macro and micronutrients
carbs, fats, proteins, vitamins, minerals, water
function of nutrients
growth, repair and maintenance
regulation of body processes
production of nutrient dense foods supply adequate amounts of vitamins and minerals in relation to caloric value
Carbs
sugars, starches, fiber
what % of intake is carbs?
55-70%
sugars
15% of total intake
monosaccharides- fruits, syrups, honey
disaccharides - milk sugar (lactose), table sugar (sucrose)
starches
complex carbs - long chains of glucose units
cannot be used directly for energy
fiber
structural part of plants
not digested by humans
soluble
or
insoluble
25g/day
fats
most energy
saturated vs unsaturated
saturated - animal products, solid at room temp
unsaturated - plants, liquid at room temp
Phopholipids
lecithin and sterols (cholesterol)
Proteins
structure component of body
12-15% of intake
functions of protein
growth, maintenance, repair, synthesize enzymes, synthesize hormones and antibodies
amino acids
21 amino acids
essential vs nonessential
vitamins
fat soluble (KADE) -found in fatty foods and oils can cause vitamin poisoning
water soluble C and B-complex vitamins
- thiamin, riboflavin, niacin, biotin, etc
- folate, B12, etc
thiamin, riboflavin, niacin, biotin, and pantothenic acid are what type of vitamin, what do they regulate?
water soluble
metabolism of CHO, proteins, and fats
Folate and B12 are important for
normal blood formation
Vitamin C
building bones & teeth, maintaining connective tissues & strengthening the immune system
Antioxidants
Vitamin C, E, beta carotene (A)
squelch free radicals by stabilizing them.
prevent aging, cancer, heart disease, etc
is beta carotene toxic?
no, it can be converted into vitamin A
excess vitamin C…
is not well absorbed
can cause intestine irritation or diarrhea
headache, nausea, loss of hair, dry skin, diarrhea –> what are you deficient in?
vitamin A
appetite loss, weight loss, failure to grow –> what are you deficient in?
Vitamin D
nausea, diarrhea, interfere with Vitamin K absorption –> what are you deficient in?
Vitamin E
Minerals
stored in liver and bones mostly
magnesium
needed in energy-supplying reactions