chapter 7 - vitamins Flashcards

(194 cards)

1
Q

what are vitamins

A

organic compounds essential in small amts for body functioning
doesn’t provide energy but enables body to use energy from carbs fats and protein

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2
Q

what was created to replace recommended dietary allownaes (RDAs) and when

A

Dietary Reference Intakes (DRIs) in 1997

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3
Q

who are inclined to vitamin deficiences

A

do not eat balanced didet
alchoholics
ppor and incapacitated elerdy
clients w serious diseases that affect appetite
ID
young children receiving inadequate care
deficiency of fat-soluble vitamins ofcur in clients w chorinc malabsorption (CF, celiac, crohns)

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4
Q

avitaminosis

A

without vitamins

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5
Q

hypervitaminosis

A

excess of one or more vitamins

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6
Q

how can vitamin loss be avoided

A

buying freshet unbruised veg and fruit locally and using within day time
prep fresh veg and fruit j before serving
heating canned veg quickly and in own liquid
follow package directions when using frozen veg or fruit
using as little water as possible when cooking and having it boil before adding veg, or preferably steaming them
cover the pain, cook veg util bright in color and crisp and tender
- save cooking liquid for soups steews and gravies
- store fresh veg and fruits in cool dark place
- microwave fruits and veg in 1-2 tbsp of water
- cook corb on cob in microwave by wrapping in paper towel
- roasting veg to retain nutrients rather than boiling

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7
Q

how are vitamins classified

A

solubility

fat solubiton - vitamin a, d,e, and k (4 total)
water insoluble - vitamin b complex and c (9 total)

vitamin d is sometimes classified as hormone
b-complex as catalysts or coenzymes

when vitmain has diff chem form but same purpose its sometimes called vitamer

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8
Q

what is a precursor or provitamin

A

substance from which body can synthesize specifci vitamin

carotenoids r example of precurose of vitamin a and r referred to as provitamin a

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9
Q

what are sources of vitamin a (retinol)

A

Liver, fish oils, egg yolks, and whole-fat dairy products

whole milk, butter, cream, cod liver oil

dark-green leafy veg, deep yellow or orange fruit, fortified margarine

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10
Q

functiosn of vitamin a

A

necessary for the formation of healthy epithelial tissue

mainteance of vision in dim light, maintance mucous membranes and healthy skin
, growth anddevelopment of bones,
reporducution,
healthy immune syste, antioxidants

keep eyes moist and free of infection, hel lining of lungs and intestines remain moist and disease free

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11
Q

deficiency of vitamin a

A

night blindness
xerophthalmia
respirairy infections
bone growth ceases

dry and scaly skin, fatigue

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12
Q

toxicity of vitamin a

A

birth defects
bone pain
anorexiant
enlargement of liver

severe headaches, bone pain, dry skin, hair loss, vomiting, and liver damage

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13
Q

sources of vitamin d (calciferol)

A

salmon and tuna, foritifed milk and yogurt, foritifed margarine, fortified orange juice, sunlight

lake trout, eggs, butter

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14
Q

functions of vitamin d (calciferol)

A

regulation of absortions of caclium and phosphorus
buildign and maintenance of normal bones and teeth
prevent of tetany
immune and muscular function
reduction of inflammation

regulates cell cycle and cell differentiation

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15
Q

deficiency of vitamin d (calciferol)

A

rickets
ostteomalacia
osteoporosis
poorly de eloped teeth and bone
muscle spasms
rickets (n chidlren)

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16
Q

toxicity of vitamin d (calciferol)

A

kidney stones
cacificiation of soft tissues

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17
Q

sources of vitamin e (tocopherol)

A

leaft green veg
margarine
salad dressing
wheat germ
veg oil
nuts

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18
Q

functions of vitamin e (tocopherol)

A

antioxidant
considered essential for protiection of cell strucutre, esp of rbc

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19
Q

deficiency of vitamin e (tocopherol)

A

destruction of rbc

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20
Q

toxicity of vitamin e (tocopherol)

A

bleeding

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21
Q

sources of vitamin k

A

liver, milk
leafy, green veg, cabbage, boccoli, brussel sportous

green leafy vegetables, cabbage, and broccoli. Prunes, blueberries, blackberries, eggs, grain products, and nuts also supply small amounts of this vitamin.

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22
Q

functions of of vitamin k

A

blood clotting

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23
Q

deficiency of vitamin k

A

prolonged blood clotting or hemorrhaging

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24
Q

toxicity of vitamin k

A

hemolytic anemia
interferes w anticlotting med

jaundice + brain damage

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25
sources of thiamine (B1)
lean pork, beef, liver, eggs, fish, whole and enriched grains, legumes, brewers yeast
26
functions of thiamine (B1)
metabolism of carb and some amino acids maintain normal appetite and functioning of nervous system
27
deficiency of thiamine (B1)
gi, nerv, and cv system problems beriberi weakness loss of appetite irritability Poor arm and leg coordination nervous tingling throughout the body edema and heart failure
28
toxicity of thiamine (B1)
none
29
sources of riboflavin (B2)
liver, kidney, heart, milk, cheese leafy green veg, cereals, enriched bread Milk and milk products, Enriched and whole-grain cereals, meats, poultry, and fish
30
functions of riboflavin (B2)
aids release of energy from food health of mouth tissue healthy eys
31
deficiency of riboflavin (B2)
cheilosis eye sensitivity dermatitis glossitis photophobia inflamed tongue and cracked skin around the corners of the mouth. Various eye disorders and mental confusion
32
toxicity of of riboflavin (B2)
none
33
sources of niacin (nicotinic acid)
milk, eggs, fish, poultry enriched breads and cereals
34
functions of niacin (nicotinic acid)
energy metabolism healthy skin and nervous and digestive sstems normal digestion
35
deficiency of niacin (nicotinic acid)
pellagra (dermatitis, dementia, diarrhea) early symptoms include poor appetite ,wt loss, weakness
36
toxicity of niacin (nicotinic acid)
vasodilation of blood vessels - can cause niacin flush nausea, dizziness, low bp
37
sources of pyridoxine (B6)
pork, fish, poultry, liver/ kidney, milk, eggs whole-rain cereals, legumesfun
38
functions of pyridoxine (B6)
conversion of tryptophan to niacin release of glucose from glycogen protein metanlism and sythesis of nonessential amino acids thought to play a role in more than 100 enzyme reactions 6 helps make the protein that allows red blood cells to carry oxygen
39
deficiency of of pyridoxine (B6)
cheilosis glossitis dermatitis confusion depression irritanility skin disorders, fatigue, irritability, and convulsions.
40
toxicity of pyridoxine (B6)
depression nerve dammage
41
sources of cobalamin (B12)
seafood, poultry, liver/ kidney, muscle meats, eggs, milk, cheese
42
functions of cobalamin (B12)
synthesis of rbc maintenance of myelin sheaths treatment of pernicious anemia folate metabolism needed for growth, maintenance of healthy nerve tissue, and formation of normal red blood cells. It also is needed for the release of energy from fat
43
defiency of cobalamin (B12)
degeneration of myelin sheaths pernicious anemia - a red, painful tongue and a tingling or burning in the skin. Nerve damage can eventually lead to walking difficulties and paralysis. Nerve damage can also cause memory loss and mental slowness. sore mouth and tongue anorexia neurological disoders
44
toxicity of of cobalamin (B12)
none
45
sources of folate
liver leafygreen veg, spunach, legumes, seeds, broccoli, cereal and flour foritifed w folate, fruit
46
functiosn of folate
synthesis of rbcs and dna
47
defificency of folate
anemia glossitis enural tube defects like anechepalhy and spiuna bifida miscarriage, speperation from uterus wall RBC are fragile and cant mature or hold oxygen
48
toxicity of folate
could mask b12 defieicny
49
sources of biotin
milk, liver and kidney, egg yolks, ;egumes ,brewers yeast, soy flour, cereals, fruit broccoli, spinach, cauliflower Egg yolks, yeast, beans, nuts, cheese, and liver
50
functions of biotin
coenzymes in carb and amino acid metanolism niacin synthesis from tryptophan helps the body make fat and glycogen
51
deficiency of biotin
dermatitis, nausea, anorexia, depression, hair loss increase in serum cholesterol similar symptoms of the circulatory and muscular systems as a thiamin defi-ciency. These symptoms include abnormal heart rhythms, pain, weakness, fatigue, and depression. Nausea, loss of appetite, hair loss, and dry, scaly skin are other symptoms.
52
toxicity ofbiotin
none/ unknown
53
sources of pantothenic acid
eggs, liver, salmon, poultry mushrooms, cauliflower, peanuts, brewers yeasty whole grain cereals and legumes thought to be synthesized by body
54
functions of pantothenic acid
metablism of carb, lipid, and proteins synthesis of fatty acids, cholesterol, steroid hormones (like acetycholine)
55
deficiency of of pantothenic acid
rare: burning feet syndrome, vomiting, fatugie
56
toxicity of of pantothenic acid
none
57
sources of vitamin c (ascorbic acid)
all citrus fruits broccoli melons strawberries tomatoes brussel sprouts potatoes cabbage green peppers
58
functions of vitamin c (ascorbic acid)
prevention of scurvry formation of collagen healing of wounds release of stress hormones absoprtion of iron antixoidant resistance to infection
59
deficiency of vitamin c (ascorbic acid)
scury muscle cramps ulcerated gums tendency to bruce easliy
60
toxicity of vitamin c (ascorbic acid)
raise uric acid level hemolytic anemia kidney stones rebound scurvy f nausea, diarrhea, and stomach cramps. Large doses may also reduce the ability of vitamin B12 to function
61
mineral oil can/ cant be absorbed humans
cant
62
whree is excess fat soluble vitamisn stored
liver; because of this deficiency of fat-soluble vitamin deficiences eappear slower although mega doses shoudl be avoided cause it can get toxic fast
63
what are the two forms of vitamin A
preformed vitmain A (retinol, adctive form) carotenes (inactive form, found in plants, alpha-and beta-carotene - lower REA value)
64
what are antioxidants
protect cells from free radicals (atoms or groups of atoms w unpaired electrons that can be formed when oxygen itneracts w certain molecules thus causing a chain reaction by reacting with important cellular components)
65
what are common carotenoids
beta-carotene, lutein, lycopene, eaxanthin
66
what is most efficiently ocnverted to retnol
beta-carotene
67
best sources of beta-carotene
carrots, swet potatoes, spinach , broccoloi, pumpims, squash, mango cantaleoupe
68
what are vitamin a values commonly isted as + measurement
retinol equivalent (RE) 1mcg retinol or 6 mcg beta-carotene
69
what is the leading cause of blindness
lack of vitamin a
70
two forms of vitmain D
D2 ergocalciferol and D3 cholecalciferol
71
how is vitamin D3 formed
in humans from cholesterol in skin
72
vitamin d is a ____ and is ____
prohormone and heat-stable
73
best source of vitamin A
sunlight chnges a provotamin to vitamin D3 in humans
74
what is vitamin D requirement
600 inenrational unis (15 mcg)
75
percent of population withvitamin d deficiency
40-75%
76
vitamin d influences expression of ___ gnees in our body
229
77
what are the two groups of vitaminE
tocopherols and tocotrienols
78
types of tocopherols
alpha, beta, delta and gamma
79
most biologicalyl active tocopherols
alpha-tocopherol
80
what aids vitammin E in its antioxidant
vitamin C and mineral selenium
81
sources of vitamin e
veg oils made from corn, soybean, safflower, and cottonseed wheat germ, nuts, leafy green, pe aut butter, broccoli, kiwi whole grain and fortified cereals, and nuts, particularly almonds. Peanut butter, broccoli, and spinach
82
vitamin E requirement increases if the amoutn of _____ in the diet increases
polyunsaturated fatty acids
83
what is vitamin K1 known as
phylooquione
84
what is vitmain K2 known as
menaquinone synthesized in bacteria and found in animal sittues
85
synthetic vitaminK i called
menadione
86
what is given to newborns immeidabey after birth and wy?
vitamin k bc human milk has little vitamin K and intestines of newborns contain few bacteria vitamin k is essential for formation of prothrombin
87
who are givien vitamin K
clients suffering from faulty fat absorption, clients after extensive antiboitoic therapy, antidote for overdose of anticoagulante, treat cases of hemorrhage
88
best dietary sources of vitamin K
leafy greens dairy products have some cows milk is better than human milk small intestine productio nis not enough
89
requirement of vitamin K
120 mcg for men 90 mcg for women infants up to 6 months should have 2 mcg btwn 6-12 months should recieive 2.5 mcg
90
water solbuel vitamins include _____ and ____ + cjharacteristics
b complex and c dissovble in water and easily detroyed by air, lightm, and cooking not sotred in body to extent fat-soluble vitamins are stored
91
what is beri beri
disease that affects nervous, cv, and Gi systems legs feels fheavy, feet burn, muscles degernate, client is irritale, suffers from headaches, depressio, anorexiaz, constipatin, tachycardia, edema, and heart failure
92
thiamine cooking properities
partialy destoreyed by heat and alkalies and lost in cooking water most bread and cereals are encriched w thiamine so majority of ppl easily fulfill recommended intake
93
daily requirement for thiamine
female - 1.1 mg a day male - 1.2 mg a day
94
for whom is thiamine deficiency common
alchoholics bc requirement for thiamine is increases and absoprtion is decreases renal clients undergoing long-term dialysis, bypass syrgery pt, primrialy eating rice eating raw fish (cotains thiamin's)
95
riboflavins is destroyed by
light, irradiation, unstable in alkalies
96
daily requiement for riboflavin
female - 1.1 mg male - 1.3 mg
97
best ay to prevent deificenty of riboflavin
fat-free milk (stored in opaque containers)
98
niacin stability
withstand reasonable amt of heat and acid and isnt destroyed during food storage
99
what is pellagra and what prevents it
sores on skin and diarrhea, anxiety, confusion, irritability, poor memory, dizziness, and untiemely death niacin prevents it
100
what is niacin used as
cholsterol=lower agent under physicain supervision
101
best souces of niacin
meats, poultry, and fish peanuts and legumes erniched breads and cereals milk and egg have niacin prcuros tryptophan
102
niacin requirements
measured as niacin equivalents 1 NE = 1 mg niacin or 60 mg tryptophan 14 mg/NE for adult women 16 mg/NE for adult men
103
vitamin B6 are composned of what 3 related forms
pyridoxine pyridoxal pyridoxamine
104
vitamin b stability
stable to heat and sensitive to light and alkalies
105
functions of vitamin B6
essential for protein metabolism anf absorption an d it aids in release of glucose from glyucogen amino acids present in excessive amounts can be converted to those body is temp deficient in with the help of B6 catalyst for converting tryptophan to niacin and helps form other substances like serotonin and dopamin
106
sources of vitamin B6
poultry, fish, ,over, kidnney, potatoes bananeas , spiach whole grains like oats and wheat are good soruces but lost during milling andn ot repla ced so refined are not good source
107
requrement for vitamin B6
1.3-1.5mg for female (oral contraceptives interfere w metabnolism of vitamin B6) 1.3-1.7 mg for men
108
vitamin b12
cobalamin contain cobalt slightly soluble in water, fairy stabnle to heat damaged by strong acids or alkalies and by light stored inhuman body for 3-5 yrs
109
what is b12 involved in
folate metabolism maintanence of myelin sheath and healthy rbc mush bind to intrinsic factor in gastric secretion to be absorbed and then travel to small itnesitnes where it combines w pancreastic proteases then travel to ileum where it attaches to special receptor cells to complete absorption process
110
best sources of B12
animal foods, organ meats, lean meat, seafood, eggs, and dairy
111
DRI for b12
2-4 mcg inc during pregnancy and lactation
112
what may occur in deficiency of b12
megaloblastic anemia inadeuqate myelin synthesis
113
what occurs when intrisic fator is missing
pernicious anemia due to surgiical removal of stomach or bc disease or surgery affecting uleum
114
folate functions
dna synthsis, protein metabolism, formation of hemoglobin prevent colon, cervicial, esopggeal, stomach and pancreatic cancers increase homocysteine levels that prevent stroke, blood vessel disease, macular degeneration, and AD
115
sources of folate
cereals fortified w folate, leafy green veg, legume, sunflower seeds, fruits like orange juice and strawberries heat, oxidation, UV destroy folate
116
_____ of foalte destryoed during food processing
50-90%
117
daily reuqirment of folate
400 mcg 600 mcg for first 6 weeks of pregnancy
118
signs of foalte deficiency
neural tube defects spina bifida anecehphyu inflammation of mouth, touge poor growth depression and mental confusion probelsm w nerve function megaloblastic anemia
119
limit of folate in OTC
100 mcg for infants 300 mcg for children 400 mcg for adults
120
what is biotin also known as
vitamin H
121
AI of biotin
30 mcg
122
pantothenic acid
greek for from manyt places faily stable but can be damaged by acids and alkalies
123
estimated intake for pantothenic acid
4-7 mcg
124
vitamin c
antioxidant properities protects food from oxidation requred for all cell meablism readily destroyed by heat air and alkalies
125
scurvy symptoms
gingivitis flesh that easily bruised tiny, pinpoint hemorrhages of skin poor wound healing sore joints and muscles weight loss death
126
vitamin c and wound healing
important role in forming collagen (holds body cells together) requirement for vitamin c increased during trauma, fever, and periods of growth tiny, pinpotin hemorrhages are symptoms of breakfdown of collagen
127
vitamin c and iron
aids in absorption of nonheme iron hence its called an iron enhancer
128
other functions of vitamin c (not as well understood)
formation or function of norepinephrine, some amino acids, foalte, WBCs, immune system, and alergic reactions reduce severeity of colds bc natural antihistamine, reduces cancer risk by reducing nitrites in food
129
requiremend of vitamin c
female - 75 mg male - 90 mg cig smokers - 125+ mg
130
excess of vitamin c causes...
diarrhea, nausea, cramps, excessive absorption of food iron, rebound scurvy, oxalate kidney stones
131
how many multivitamins does the american medical association recommend?
1
132
what is a megadose
10x RDA/ DRI
133
where to look to gain info about supplementals
USP (US pharmocopia) NS international Consumer Labs gpvernment's Office of Dietary Supplements
134
how many vitamins are there
13
135
how long do vitamin deficiency take to show
1 month or so
136
RDA for Vitamin A
900 mcg for male 14+ 700 mcg for female 14+
137
retinol activity equivalent (RAE).
anohther measure of vitamin A measures the strength of various vitamin A compounds and the ease with which the body can use them
138
cvitmain A tolerable upper limit
2800 mcg
139
vitamin d and calcium
Normal amounts of calcium in the blood are needed for healthy nerve function, bone growth and maintenance, and other func-tions. Vitamin D performs this function by triggering the release of calcium from the bones. Vitamin D also controls blood calcium levels by enhancing the absorp-tion of calcium from the intestines. When blood calcium levels are low, vitamin D also reduces the amount of calcium the kidneys excrete.
140
how many forms of vitamin D exists and what are the most important to humans
10 exist 2 are important: provitamins D2 (ergocalciferol) and D3 (cholecalciferol)
141
where is D2 found
plant food
142
where is D3 found
D3 is found in animal foods, but is also made by the human body in the skin when exposed to sunlight. When sunlight shines on skin, a cholesterol-like compound in the skin forms the D3 provitamin. The liver and kid-neys then change the provitamin into the form of vitamin D best used by the body.
143
A light-skinned person can make enough vita-min D to meet the body’s needs in___ minutes of sun exposure
15
144
UL for vitamin D
100 mcg
145
RDA for vitamin E
15 mcg
146
what destroys vitamin e
heat
147
erythrocyte hemolysis
occurs in premature infants who lack vitamin E stores (developed in last few weeks of pregnancy) causes red blood cells to break makes infants listless and weak
148
UL for vitamin E
800 mcg
149
AI for vitamin K in F and M 14-18 yo
75 mcg
150
what are the B vitamisn
thiamin (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), pyridoxine (B6), biotin (B7), folate (B9), and cobalamin (B12).
151
vitamin B deficiency symptoms
nausea and loss of weight and appetite. Severe exhaustion, irritability, depression, and forgetfulness may occur. The heart, skin, and immune system may also be affected.
152
why was thiamine named thiamine
because thiamine means sulfur and B1 contians sulfur
153
thiamine RDI
male - 1.2 mg female - 1g
154
Beriberi meaning
“I can’t, I can’t. cause wo thiamine you cant do anythign tasks required for everyday living
155
meaning behind the name riboflavin
becuase flavin means yellow and B2 is yellow
156
RDA for riboflavin
male - 1.3mg female - 1mg (1.1 for 19+)
157
rda for niacin
male - 16mg female - 14 mg
158
UL for niacin
30mg for 14-18 yo
159
meaning behind Pantothenic acid
comes from greek work pantheon which means from all sides because pantothenic acid found in all living tissue
160
AI for pantothenic acid
5 mg
161
b6 RDA
males ages 14- 50 is 1.3 mg Females ages 14 to 18 is 1.2 mg female 19-50 is 1.3 mg Vitamin B6 needs increase further for people of both sexes after age 50.
162
UL for B6
80 mg
163
where does biotin get its name from
greek for sustenance
164
AI for biotin
for males and females ages 14 to 18 years is 25 micrograms
165
folate name meanign
derived from the Latin word folium, which means “leaf.” This is a logi-cal name because leafy green vegetables are good sources of folate
166
RDA for folate
14+ - 400 mcg prengant - 600 mcg
167
healthcare providers recommend all women of childbearing age consume_______ micrograms of folic acid daily from supplements or fortified foods
400
168
UL for folate
800 mcg
169
vitamin b12 name meanign
cobalamin because it contains cobalt
170
rda b12
2.4 mcg
171
rda vitamin c
males ages 14 to 18 years old is 75 milligrams per day. After age 19, it increases to 90 milligrams per day. For females ages 14 to 18 years, the RDA is 65 milligrams per day. After age 19, it increases to 75 mil-ligrams per day. T
172
UL for vitamin C
1800 mcg
173
choline
vitamin-like substance, is very important for nervous system devel-opment, cell membrane production, lipid transport, reproductive health, and other body processes.
174
AI of choline
Adequate intake for pregnant women is 450 milligrams of choline and 550 milligrams for women who are breast-feeding.
175
side effects of choline
Brain and nervous system development of the infant can be affected if there is inadequate intake
176
sources of choline
Eggs, milk, meat, poultry, nuts, and tofu made with calcium sulfate
177
good sources of flavonoids
Green tea, extra virgin olive oil, and pomegranates
178
plant sources of Carotenoids (such as beta-carotene, lycopene, lutein, zeaxanthin)
Red, orange, and green fruits and vegetables, including broccoli, carrots, cooked tomatoes, leafy greens, sweet potatoes, winter squash, apricots, cantaloupe, oranges, and watermelon
179
health benefits of Carotenoids (such as beta-carotene, lycopene, lutein, zeaxanthin)
May inhibit cancer cell growth, work as antioxidants, and improve immune response
180
plant sources of Flavonoids (such as anthocyanins and quercetin)
apple citrus fruits onion soybeans and soy producs offee tea
181
possible health benefits of Flavonoids (such as anthocyanins and quercetin)
inhibit inflammation and tumor growht aid immnity nd boost production of detoxifying enzumes in body
182
plant sources of Indoles and Glucosinolates (sulforaphane)
Cruciferous vegetables (broccoli, cabbage, collard greens, kale, cauliflower, and Brussels sprouts)
183
possible health benefits of Indoles and Glucosinolates (sulforaphane)
May induce detoxification of carcinogens, limit production of cancer-related hormones, block carcinogens, and prevent tumor growth
184
plant sources of Inositol (phytic acid)
Bran from corn, oats, rice, rye, wheat, nuts, and soybeans and soy products (tofu, soy milk, edamame, etc.)
185
possible health benefits of Inositol (phytic acid)
May retard cell growth and work as antioxidants
186
plant sources of Isoflavones (daidzein and genistein)
Soybeans and soy products (tofu, soy milk, edamame, etc.)
187
possible health benefits of Isoflavones (daidzein and genistein)
May inhibit tumor growth, limit production of cancer-related hormones, and generally work as antioxidants
188
plant sources of Isothiocyanates
Cruciferous vegetables (broccoli, cabbage, collard greens, kale, cauliflower, and Brussels sprouts)
189
possible health benefits of Isothiocyanates
May induce detoxification of carcinogens, block tumor growth, and work as antioxidants
190
plant sources of Polyphenols (such as ellagic acid and resveratrol)
Green tea, grapes, wine, berries, citrus fruits, apples, whole grains, and peanuts
191
possible health benefits of Polyphenols (such as ellagic acid and resveratrol)
May prevent cancer formation, prevent inflammation, and work as antioxidants
192
plant sources of Terpenes (such as perillyl alcohol, limonene, carnosol)
Cherries, citrus fruit peel, and rosemary
193
possible health benefits of Terpenes (such as perillyl alcohol, limonene, carnosol)
May protect cells from becoming cancerous, slow cancer cell growth, strengthen immune function, limit production of cancer-related hormones, fight viruses, and work as antioxidants
194