Children facing the demands of cancer treatment must eat healthily in order to get the nutrients that can fuel the body and aid in healing as well as assist in maintaining a healthy weight.
Special nutritional challenges are bound to arise throughout treatment because the side-effects of Childhood Cancer and Cancer Treatment Therapies such as Chemotherapy & Radiation Therapy can result in changes in your eating habits and differences in the way your body uses nutrients. Nutritional needs and eating habits are affected differently depending on the type of cancer and its treatment.
Phytochemicals are naturally occurring plant chemicals (phyto means plant in Greek). They provide plants with colour, odour and flavour. 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 thus far, and scientists have only begun to investigate their benefits.
The chart below lists some of the phytochemicals now attracting serious scientific attention, identifies food sources and outlines potential benefits.


Plant Source
Possible Benefits
(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
(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 tumour growth; may aid immunity and boost production of detoxifying enzymes in the body
Indoles and Glucosinolates
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 tumour growth
(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
(daidzein and genistein)
Soybeans and soy products (tofu, soy milk, edamame, etc.) May inhibit tumour 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 tumour growth and work as antioxidants
(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
(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


Steps to Take Now

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
  • Favour brightly coloured or strongly flavoured 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.


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