Nutrition Flashcards
Carbohaydrates
4Kcal/gram
Protiens
4kcal/gram
Fats
9kcal/gram
Function of carbs
Provide fuel
Spare proteins
Help prevent ketosis
Two kinds of carbs
Simple Such as: sugar. sugar based foods
not nutritive value
Complex - starch, glycogen, fiber takes longer to digest, provide both fiber and nutrients, Sources: cereal grains, rice, pasta, potatoes
Proteins
Made up of amino acids
Maintenance & growth, regulate body processes, immunity, engery
two types: Essential and nonessential
Proteins
Complete - supply all the essential amino acids. Sources eggs, milk meat, poultry, fish.
Incomplete- lacks one or more amino acids. sources: grains, veg., legumes, nuts, seeds
Proteins
Adults require more protein as they get passed age of 65. Lean protein
Fats
most concentrated form of energy
Fats
saturated-contain all hydrogen they can hold.
polyunsaturated-have some hydration; peanut oil
monounsaturated-olive oil, canola oil almost as much monounsaturated fat as olive oil.
Fat soluble vitamins A,D,E,K.
Fats
Triglycerides-simple lipid found in body.
Compound lipids include: Glycolipids-nerve tissue, lipoproteins
Lipoproteins
LDL- main carrier of cholesterol, contributor of atherosclerosis.
HDL- carry cholesterol to liver for excretion & reduce risk of atherosclerios
Functions of fats
Fuel reserve, organ protection, lubrication, insulation, cell membrane structure.
Cholesterol
body makes 1000 mg/day in liver
needed to help produce some hormones
component of bile salts
total less than 200
Fat soluble vitamins
more stable than water soluble
Vitamin A
fat soluble, Retinol preformed, 80-90% absorbed. Provitamin A -carotene 33% absorbed.
Body can store a years supply. Retinol
source egg yolk, butter, liver, kidney, milk
Provitamin comes from carotene.
Vitamin A function
vision-rhodopsin, skin, lining of body cavities, bone growth, energy regulation
Vitamin A deficiency
Blindness, Excess-yellowing of skin,
Vitamin D
Fat soluble. Bone mineralization, stimulates bone cells to build and maintain bone tissue.
Sources sunshine, milk
D
Deficiency Rickets, osteomalacia in adults
Toxicity most toxic of all.
Vit E
Function-antioxidant
Deficiency-sterility
Sources veg oil, whole grains, milk, eggs, leafy veg
too much can cause excessive bleeding.
Vit K
Fat soluble, Function-blood clotting and bone metabolism. Deficiency-newborns don’t have any. Given shot when they are born.
Toxicity- K1, K2 naturally occurring not toxic, K3 too much can cause liver damage, brain damage.
Water soluble vitamins
C and b complex
Most cannot be stored in body.
Vit C Function
Wound & fx healing. Antioxidant Adrenal gland function Fe absorption Folic acid conversion