Phytochemicals
G.
Douglas Andersen, DC, DACBSP, CCN
Volume 22,
number 1, 1/1/04, page 42
An update of a highly popular and quoted chart that I composed in 1995
Plant-derived
chemicals, many of which are beneficial to human health and disease prevention,
is a rapidly expanding area of nutrition. Around 4000 had been identified and
approximately 150 have been studied. As nutritional therapeutics continue to
evolve, it is likely that phytochemicals will play an increasing role in
nutritional therapeutics. This is an updated version of a chart I did a few
years ago.
NAME
|
FOOD SOURCES
|
EFFECTS
|
Allyl sulfides
|
Garlic and onions
|
Lowers the risk of
stomach and colon cancer. Increases
glutathione production. Limits phase
I enzyme production (phase I byproducts are quite reactive). Retains activity after cooking.
|
Alpha carotene
|
Carrots and pumpkins
|
Antioxidant with powerful anticarcinogenic properties.
|
Beta cryptoxanthin
|
Oranges, tangerines, papaya
|
Carotenoid with antioxidant properties.
|
Brassinin
|
Cabbage
|
Antioxidant properties which in animal studies reduce tumors in the
breasts and skin.
|
Caffeic Acid
|
Apples
|
Neutralizes
free radicals.
|
Capsaicin
|
Hot peppers
|
Antioxidant especially good at protecting DNA. Blocks nitrosamine formation. Kills Helicobacter pylori (a
cause of ulcers). Used topically to promote the release of substance P
which results in pain reduction.
|
Chlorogenic Acid
|
Tomatoes, bell peppers, pineapple, strawberries
|
Blocks nitrosamine formation during digestion
(nitrosamine is a powerful carcinogen).
|
Ellagic Acid
|
Grapes, strawberries, raspberries, blueberries, blackberries, nuts
|
Antioxidant adept at protecting DNA. It remains active after freezing or
cooking.
|
D-carvone
|
Caraway seeds
|
A monoterpene with anticarcinogenic properties
|
Diadzein
|
Soybeans
|
A isoflavone that may
reduce hot flashes and osteoporosis.
Also reduces alcohol consumption in dependent animals. Its synthetic metabolite is ipriflavone.
|
Dithiolthiones
|
Broccoli and other cruciferous vegetables
|
Antioxidant which specifically stimulates
enzymes in the glutathione family (which are powerful free radical
scavengers).
|
Epigallocatechin Gallate (EGCG)
|
Green tea
|
EGCG is a polyphenol
which in animal and in vitro studies has shown inhibition of bladder,
breast, colon, liver, leukemic, ovarian, pancreatic, skin, and stomach
cancers. It may also reduce
cholesterol, LDL cholesterol, and LDL oxidation. It also has antiviral, antimicrobic, and powerful antioxidant
effects against multiple species of free radicals. Increases fat burning in humans beyond
what would be expected by the caffeine it contains. It has also been shown to increase the
concentration of chemo-therapeutic drugs in cancer cells and can protect
the surrounding healthy tissue.
More human studies are greatly anticipated.
|
Genistein
|
Soybeans
|
An isoflavone that inhibits angiogenesis, increases endogenous
production of superoxide dismutase (SOD), glutathione, and catalase. It has weak estrogenic activity which
allows it to bind on sites reserved for estrogens. This results in a reduction of estrogenic
effects.
|
Indole 3 carbinol (I3C)
|
Cruciferous vegetables
|
Modulates estrogen
metabolism by increasing the ratio of 2-hydroxyestrone (a cancer protector)
to 16-hydroxyesterone (a cancer promoter).
|
Isoflavones
|
Soybeans
|
Binds with receptors
reserved for estrogen. Standard
isoflavone preparations contain approximately 50 percent genistein, 38
percent diadzin, and 12 percent glycitin.
|
Limonene
|
Citrus fruit
|
A monoterpene that up-regulates enzymes required to remove
carcinogens from inside cell membranes.
|
Lutein
|
Corn, kiwi, zucchini squash, yellow squash, butternut, squash,
celery, cucumbers, grapes, peas, egg yolk
|
A carotenoid that can prevent age-related
macular degeneration and cataract formation by acting as an
intraretinal
antioxidant.
|
Lycopene
|
Tomato products (sauce, paste, catsup), juice, water melon, guava,
pink grapefruit
|
A carotenoid which in vitro was found to be
twice as powerful an antioxidant as beta carotene and has been shown to be
especially beneficial in reducing prostate, lung, and stomach cancer. Quite stable and is in a much higher
concentration in tomato products.
Its potency is not affected by cooking or freezing.
|
Monoterpenes
|
Broccoli, cucumber, cabbage, carrots, squash, yams, eggplant
|
Can reduce cholesterol, lowers the risk to breast, skin, liver,
pancreatic, lung, and stomach cancers.
|
Oltipraz
|
Cabbage and other cruciferous vegetables
|
Antioxidant which stimulates glutathione production and can protect
liver cells from alfatoxins.
|
P-Coumaric Acid
|
Tomatoes, bell peppers, pineapple, strawberries, citrus
|
Blocks nitrosamine formation.
May reduce stomach cancer.
Prevents blood clotting.
|
3-phthalide
|
Celery, parsley, carrots
|
Has antihypertensive effects.
|
Polyacetylenes
|
Parsley, celery, carrots
|
Breaks down tobacco-generated carcinogens.
|
Phenethyl
Isothiocyanates (PEIPC)
|
Cabbage turnips, and other cruciferous vegetables
|
Antioxidant especially good at protecting
DNA. Reduces estrogen to the
nontoxic metabolite estradiol.
|
Phytosterols
|
Beans
|
May inhibit some
types of colon cancer by a mechanism that is not yet fully understood. Reduces LDL and total cholesterol
without affecting HDL or triglycerides.
|
Proanthocyanidins aka omeric procyanidins
(OPC), procyanidolic oligomers (PCO), anthocyanidins
|
Grape skins, grape seeds, apples, cranberries, blueberries, French
maritime pine bark, peanuts, almonds
|
Inhibited breast, lung, and stomach cancer in vitro. Also exhibited greater antioxidant
protection to brain and liver cells than vitamins C, E, and beta carotene. Animal studies show promotion of hair
growth and inhibited development of atherosclerosis. Can also strengthen collagen by
promoting cross linking and reduced postoperative edema in women following
face-lift surgery.
|
Resveratrol
|
Grapes, red wine, peanuts, and mulberries
|
A powerful
antioxidant that inhibits LDL oxidation.
Also a natural COX-2 inhibitor that can prevent the growth of cancer
cells by reducing angiogenesis.
Also induces phase II liver detoxifying enzymes.
|
Sulforaphane
|
Broccoli, brussel sprouts, cauliflower, kale
|
An isothiocyanate that increases phase II
enzyme activity. It also has
powerful antioxidant effects which in animal studies has shown to reduce
breast cancer. It remains active
after cooking.
|
Terpenoids
|
Winter squash, sweet potatoes, yams, apricots, cantaloupe, turnips,
greens, spinach, kale, carrots, citrus
|
Reduces arterial plaque formation and quenches multiple species of
free radicals.
|
Triterpenoids
|
Citrus, soy, licorice extract
|
It has antiulcer and antidental decay activity.
|
Zeaxanthin
|
Orange bell peppers, orange juice, corn, honeydew, mango, egg
yolks, red bell peppers
|
A carotenoid with antioxidant properties that
has been shown to reduce the incidence of age-related macular degeneration
and cataract formation by filtering out phototoxic blue light and UV
radiation. It is the main pigment
in the center of the macula.
|
916 E. Imperial Hwy.
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(714) 990-0824
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Copyright 2004, G. Douglas
Andersen, DC, DACBSP, CCN, 916 E. Imperial Hwy, Brea, CA 92821, (714)
990-0824
|