My wife has had them a couple of times. She is usually pretty tough but the stones really took it out of her. I wouldn't wish them on anyone (well, maybe *****
).
As for calcium, it's a good idea to avoid supplements but it's important to get enough calcium in your diet.
From
Wiki:
Quote:
Calcium
Calcium is one component of the most common type of human kidney stones, calcium oxalate. Some studies suggest people who take supplemental calcium have a higher risk of developing kidney stones, and these findings have been used as the basis for setting the recommended daily intake for calcium in adults.[7] In the Women's Health Initiative, postmenopausal women who consumed 1000 mg of supplemental calcium and 400 international units of vitamin D per day for seven years had a 17% higher risk of developing kidney stones than subjects taking a placebo.[8] The Nurses' Health Study also showed an association between supplemental calcium intake and kidney stone formation.[6]
Unlike supplemental calcium, high intakes of dietary calcium do not appear to cause kidney stones and may actually protect against their development.[6][8] This is perhaps related to the role of calcium in binding ingested oxalate in the gastrointestinal tract. As the amount of calcium intake decreases, the amount of oxalate available for absorption into the bloodstream increases; this oxalate is then excreted in greater amounts into the urine by the kidneys. In the urine, oxalate is a very strong promoter of calcium oxalate precipitation, about 15 times stronger than calcium. In fact, current evidence suggests the consumption of diets low in calcium is associated with a higher overall risk for the development of kidney stones.[9] For most individuals, however, other risk factors for kidney stones, such as high intakes of dietary oxalates and low fluid intake, probably play a greater role than calcium intake.[10]
|
I know it's Wiki and all but I have also read the same elsewhere as well as looked at some of the studies.
Foods high in oxalates are best avoided:
Quote:
Information About Dietary Oxalates
If you form calcium-oxalate kidney stones, it is important to limit your intake of dietary oxalates. Many healthy foods contain oxalate; you should limit those with very high concentrations. Below is a list of food containing very high levels of oxalate. Small amounts of these foods periodically are less harmful than single large amounts or binges.
Grains
Wheat germ
Vegetables
Beets, fresh or pickled
Collards *
Okra
Pokeweed (poke greens)
Pursiane leaves
Rhubarb
Soy foods (including soy milk)
Swiss chard
Spinach
Snacks
Nuts (peanuts, peanut butter, pecans)
Chocolate/Cocoa
Citrus Peel (candied lime, orange, lemon)
Beverages
Tea (green tea is OK)
Hot Chocolate/Chocolate Milk
Condiments
Black Pepper
Keep in mind that cooking greens condenses the oxalate level per serving. In other words, a small spinach salad would contain much less oxalate than a small serving of cooked spinach.
|
http://www.iksi.org/patients/educati...tary-oxalates/