Potential challenges for your body
-can build up in joints, kidneys, &   
  bladder
-kidney stones
-pain in joints, feet, knees

Ways to help your body clean out excess oxalic acid
-Drink lots of water
-Exercise a lot.
-Each morning, drink a large glass of lemon water. For even more help, drink that glass of lemon water with a tsp of coldpressed olive oil stirred in it as well.
-Eat lots of vegetables but not too much spinach, chard, beet greens
-Avoid soft drinks.
-Make sure you get enough Ca in your daily diet (most of us do not get enough).
-Mg supplement daily.
-B complex supplement daily.
-Eat foods high in Vitamin C.
-Do not eat meat.

-Daily aloe vera gel - 1/2 cup or less.
-Cranberry extract - 400mg/twice a day.
-5000IU of vitamin A & 400 IU of vitamin E daily.

Foods That Contain Oxalic Acid, Listed by Order of Decreasing Amounts

Rhubarb leaves (poisonous; do not eat)
Rhubarb
Lamb's quarters
Sorrel
Purslane
Star fruit
Black pepper
Parsley
Poppy seed
Amaranth
Spinach
Chard
Beets
Cocoa
Chocolate
most nuts
most berries
beans