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Little known ways to boost your immune system.

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Phytochemicals: The Cancer Fighters in the Foods We Eat

Phytochemicals are naturally occurring plant chemicals (phyto means plant in Greek). They provide plants with color, odor and flavor. Once we eat them, however, research shows they can influence the chemical processes inside our bodies in helpful ways.

Findings from laboratory studies have shown that phytochemicals have the potential to:

Stimulate the immune system
Block substances we eat, drink and breathe from becoming carcinogens
Reduce the kind of inflammation that makes cancer growth more likely
Prevent DNA damage and help with DNA repair
Reduce the kind of oxidative damage to cells that can spark cancer
Slow the growth rate of cancer cells
Trigger damaged cells to commit suicide before they can reproduce
Help to regulate hormones

 

A Guide to Phytochemicals

Thousands of phytochemicals have been identified so far, and scientists have only begun to investigate their promise. This chart lists some of the phytochemicals attracting serious scientific attention, identifies food sources and outlines potential benefits.

Phytochemicals
Phytochemical(s)
Plant Source
Possible Benefits
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 May inhibit cancer cell growth, work as antioxidants and improve immune response
Flavonoids
(such as anthocyanins and quercetin)
Apples, citrus fruits, onions, soybeans and soy products (tofu, soy milk, edamame, etc.), coffee and tea May inhibit inflammation and tumor growth; may aid immunity and boost production of detoxifying enzymes in the body
Indoles and Glucosinolates
(sulforaphane)
Cruciferous vegetables (broccoli, cabbage, collard greens, kale, cauliflower and Brussels sprouts) May induce detoxification of carcinogens, limit production of cancer-related hormones, block carcinogens and prevent tumor growth
Inositol
(phytic acid)
Bran from corn, oats, rice, rye and wheat, nuts, soybeans and soy products (tofu, soy milk, edamame, etc.) May retard cell growth and work as antioxidant
Isoflavones
(daidzein and genistein)
Soybeans and soy products (tofu, soy milk, edamame, etc.) May inhibit tumor growth, limit production of cancer-related hormones and generally work as antioxidant
Isothiocyanates Cruciferous vegetables (broccoli, cabbage, collard greens, kale, cauliflower and Brussels sprouts) May induce detoxification of carcinogens, block tumor growth and work as antioxidants
Polyphenols
(such as ellagic acid and resveratrol)
Green tea, grapes, wine, berries, citrus fruits, apples, whole grains and peanuts May prevent cancer formation, prevent inflammation and work as antioxidants
Terpenes
(such as perillyl alcohol, limonene, carnosol)
Cherries, citrus fruit peel, rosemary May protect cells from becoming cancerous, slow cancer cell growth, strengthen immune function, limit production of cancer-related hormones, fight viruses, work as antioxidants

 

While research continues, the best bets for achieving the maximum health benefits possible include:

Eat a varied diet high in a variety of vegetables, fruits, whole grains and beans
Favor brightly colored or strongly flavored vegetables and fruits, which are often the best sources of phytochemicals
Stick to food sources – phytochemicals in supplement form may not be as easily absorbed as those from food.
Read more from the AICR

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Cathy Bowers, RD

cbowers@nutritionforalifetime.biz

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