Vitamins
     
   You may have heard of antioxidants. Vitamin A, C, and E are great antioxidants. How do they work? They go after "free radicals" and neutralize them.
So what are free radicals? They are the bad guys. Free radicals are highly active molecules which damage the genetic material of cells. That alone would be dangerous enough. But free radicals also inhibit the natural repair mechanisms normally used by cells to patch up damaged genes.   Paul Cézanne, 1880
   Damage to the genetic code of body cells increases the risk of cancer development. Vitamin A, C, and E reduce your cancer risk, particularly the risk of breast and lung cancer, by acting as antioxidants.

     
Vitamin C   
     
Vitamin C is water soluble and heat sensitive. Because it cannot be stored in the body, our diet must provide enough vitamin C every day.   
     
tip Fresh food does not only taste best, it is also the vitamin-richest, because water-soluble vitamins (C and B) disintegrate during storage. If necessary, food should be stored in cool, dark places.
      For long-term storage, freezing is the best method to conserve vitamins.
  tip Rinse lettuce and vegetables under cold running water. Prolonged soaking will decrease their vitamin C content.
      When cooking vegetables, use little water and short cooking times. Cooked vegetables should still be crunchy.
  tip Don't waste vegetable broth, it contains dissolved vitamins. Use it in soups or as replacement of water in savoury dishes. When using salted broth, however, don't forget to adjust the amount of added salt in your recipe.
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Guiseppe Arcimboldo, 1563   Vitamin C is beneficial in many ways. It facilitates wound healing and healing of burns, strengthens blood vessel walls to decrease easy bruising, and enhances the absorption of iron.
      In cancer prevention, vitamin C has several important functions. It inhibits formation of toxic nitrosamines in the stomach, and neutralizes nitrosamines and free radicals, thus protecting cells from damage to their genetic codes.
Equally or even more important is its ability to strengthen our immune system. Strong immune systems not only fight viral infections - everybody knows about vitamin C against colds and flu - but also recognize and destroy newly-formed tumor cells. Weak immune systems fail to eradicate these first malignant cells, allowing tumor growth.   
     
Foods Rich in Vitamin C
 

Black and red currants
Kiwis
Strawberries
Citrus fruits (lemons, limes, oranges and grapefruits)
Cantaloupes
Melons
Berries
 
Green and red peppers
Tomatoes
Lettuce
Broccoli
Brussels sprouts
Cabbage
Cauliflower
Spinach
Potatoes
  Kerstiaen Luyckx, ca. 1660

tip Often you can recognize high levels of Vitamin C by a sour component in the flavor of ripe fruits.
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Smokers have increased vitamin C requirements!
      Alcohol consumption enhances the excretion of all water-soluble vitamins (C and B).
  
     
Georg Flegel, 1632   tip At your next party, serve low-fat grain snacks like graham crackers and pretzels for additional vitamin B supply.
      Use plenty of colorful vitamin C-rich vegetables (e.g., red and green peppers) to decorate cold cuts.
  tip Nicely arranged fruit sections with a light dairy dip make a great party treat. Sprinkle lemon juice on cut fruits to preserve their natural color.
      Your guests will appreciate the extra vitamin C supply the morning after!
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Vitamins A and E   
     
Vitamins A and E are fat soluble and can be stored in the body.  
Luis Meléndez   Vitamin A is needed for healthy skin. It fosters maturation of skin and mucosal cells, and helps to prevent skin and lung cancer. Vitamin A can decrease the growth rate of certain tumors. It may even be able to reverse the development of these tumors during their earliest stages.
      Vitamin E inhibits oxidation processes and neutralizes harmful chemical compounds that can induce cancer.
     
Foods Rich in Vitamin A

 
Carrots
Sweet potatoes
Winter squash
Spinach
Kale
Broccoli
Romaine lettuce
Tomatoes
Red peppers
Pumpkins
  Peaches
Apricots
Nectarines
Ruby red grapefruit
Cantaloupes
Papayas
Milk
Butter
Liver
Cod liver
Carp
  Paul Cézanne, 1880

tip High levels of Vitamin A can often be recognized by the yellow, orange or reddish color of foods.
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Foods Rich in Vitamin E

 
Whole grain breads and cereals
Wheat germ
Milk
Eggs
Fish
Vegetable oils
Avocado
Apples
Apricots
Nectarines
Peaches
  Georg Flegel, 1632
Almonds
Hazelnuts
Walnuts
Pecans
Other nuts
Sunflower seeds
 
Dark-green leafy vegetables are rich in both vitamin A and E.


tip If you are having just a bowl of salad for a meal, make sure that the dressing or marinade contains oil. Otherwise your body might miss out on valuable fat-soluble vitamins (A, D, and E).

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Other Vitamins   
     
Vitamin D builds and maintains strong bones. Exposure of the skin to sun rays is necessary for the development of vitamin D from its precursor.   
Bartolome Esteban Murillo, 1670   Vitamin B, which includes B12 and folate, stabilizes membranes and keeps skin and nerve tissues healthy. It is also an essential factor in the production of red blood cells. Recent scientific studies have linked insufficient folate levels in pregnant women to certain defects in embryonic neural development.
     Vitamin K is necessary for efficient blood clotting in wounds.
No connection between these vitamins and cancer has so far been proven, but there are indications that a component of the vitamin B complex might play a role in protection against skin cancer.   
     
 Vitamin Supplements   
     
Meeting your daily vitamin requirements is simple: Eat at least five servings of fruits and vegetables every day, keep variety in mind, and select whole-grain foods.
     If you are healthy and you stick to a well-balanced diet, you don't need vitamin supplements. If not, ask your doctor's advice.
  
Georg Flegel, 1632   Natural sources of vitamins are not only safer than supplements but also more efficient in preventing cancer. Scientific investigations have shown that artificial antioxidants offer much less protection against cancer than their natural counterparts.
     
If you cannot manage to regularly eat a balanced diet which contains enough vitamins, you may have to opt for second best and take a vitamin supplement.   caution Select a product that provides no more than 100% of the Daily Value for vitamins and minerals. Overdoses of fat-soluble vitamins (A, D, and E) accumulate in your body and may cause severe symptoms!   tip Don't worry about getting an overdose of vitamins from eating too much healthy food. Unless you stuff yourself with cod liver, you cannot possibly eat the quantitiy of food containing an overdose of vitamins.
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