Special Diet for Kidney Stones Made of Calcium
In calcium phosphate stones, over-secretion of parathyroid hormone causes loss of calcium from the bones resulting in a high blood level of calcium with increased excretion of calcium in the urine. An abnormally high intake of milk, alkalis or vitamin D may also result in the formation of calcium phosphate stones.
For controlling the formation of calcium phosphate stones, a moderately low calcium and phosphorous diet
should be taken. The intake of calcium
and phosphates should
be restricted to minimal levels consistent with maintaining nutritional adequacy.
The maintenance level of calcium is 680 mg and of phosphorous 1000 mg. In this diet, milk should constitute the main source of calcium
and curd or cottage cheese, lentils
and groundnuts should form the
main sources of phosphorous. Foods which should be avoided
are whole wheat flour,
Bengal gram, peas, soyabeans, beets, spinach, cauliflower, turnips, carrots, almonds and coconuts.
When stones are composed of calcium and magnesium phosphates and carbonates, the diet should be so regulated as to maintain acidic
urine. In such a diet, only half a litre of milk, two servings
of fruits and two servings
of vegetables (200 grams) should be taken. The vegetables may consist of asparagus, fresh
green peas, squash, pumpkins, turnips,
cauliflower, cabbage and tomatoes. For fruits, watermelon, grapes, peaches, pears, pineapple, papayas and guavas
may be taken.
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