Kidney stones are solid accumulations of material that form in the tubal system of the kidney. Kidney stones cause problems when they block the flow of urine through or out of the kidney. When the stones move along the ureter, they cause severe pain.

Kidney stones probably aren’t caused by a diet too high in dairy products. Even though the stones are made from calcium, research shows that a diet high in calcium actually decreases your risk of forming them.
Causes and symptoms
Kidney stones can be composed of a variety of substances. The most common types of kidney stones include:
Calcium stones. About 80% of all kidney stones fall into this category. These stones are composed of either calcium and phosphate, or calcium and oxalate. People with calcium stones may have other diseases that cause them to have increased blood levels of calcium. These diseases include primary parathyroidism, sarcoidosis, hyperthyroidism, renal tubular acidosis, multiple myeloma, hyperoxaluria, and some types of cancer. A diet heavy in meat, fish, and poultry can cause calcium oxalate stones.
Struvite is the name given to the crystal composed of Magnesium, Ammonium, and Phosphate. (Struvite is also occasionally referred to as “Triple Phosphate” due to an old erroneous belief that the phosphate ion was bonded to 3 positive ions instead of just magnesium and ammonium.) Struvite crystals are not unusual in normal urine and are usually of no consequence but when the are present in very large amounts, they can form stones.
Heredity: Some people are more susceptible to forming kidney stones, and heredity certainly plays a role. The majority of kidney stones are made of calcium, and hypercalciuria (high levels of calcium in the urine), is a risk factor. The predisposition to high levels of calcium in the urine may be passed on from generation to generation. Some rare hereditary diseases also predispose some people to form kidney stones.
Cystine stones are yellow and crystalline. They develop if you have high levels of cystine in your urine, which happens if you have a hereditary disorder called cystinuria. Only one in a hundred kidney stones are caused by this condition. Cystine stones tend to develop earlier in life than other kidney stones, usually between the ages of 10 and 30 years.
Sudden spasms of excruciating pain (renal or uteric colic) - this usually starts in the back below the ribs, before radiating around the abdomen, and sometimes to the groin and genitalia
Natural Treatment for Kidney Stones
Small stones that aren't causing symptoms, obstruction, or an infection usually don't need to be treated. Drinking plenty of fluids increases urine production and helps wash out some stones; once a stone is passed, no other immediate treatment is needed. The pain of renal colic may be relieved with narcotic analgesics.

Eat a whole foods diet that contains leafy green vegetables, fruits, vegetables, whole grains, legumes, and fish and poultry in small portions. Include foods that have a high ratio of magnesium to calcium such as brown rice, bananas, oats, barley, and soy, and that are high in fiber such as oat bran, psyllium seed husk, and flaxseed meal.

Avoid sugar (check ingredients for hidden sources of sugar), alcohol, antacids, excessive protein, dairy products (especially milk), salt, carbonated beverages, caffeine, and refined white flour products such as pasta, white bread, and baked goods.

Drinking lots of water (two and a half to three litres per day) and staying physically active are often enough to move a stone out of the body. However, if there is infection, blockage, or a risk of kidney damage, a stone should always be removed.

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