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Kidney Failure​

Kidney Stones

Kidney stones are painful urinary disorders. They start as salt/chemical crystals that precipitate from urine. Under normal circumstances, urine contains substances that prevent crystallisation but for patients with this condition, these inhibitory substances are ineffective. Tiny crystals will pass out along with the urinary flow without causing problems. Kidney stones may contain various forms of salts – the most common is calcium in combination with either phosphate or oxalate. These salts are an essential part of our daily dietary intake and requirement.

Kidney stone disease is more common in males (men) and usually those between the ages of 20 and 40.

Possible causes of kidney stones formation are:

  • Drinking too little water
  • Too much or too little exercise
  • Obesity
  • Weight loss surgery
  • Consuming too much salt
  • Infections
  • Consuming too much fructose
  • Family history of kidney stones
  • Consumption of certain medications and/or vitamins and supplements

Metabolic conditions such as gout (excess uric acid), hyperparathyroidism, cystinuria (inherited disease), and hyperoxaluria (inherited disease) are also common causes of stone formation.

Signs & Symptoms

Painful urination

Unable to pass urine if stone is large enough to obstruct the outlet

Blood in urine

Extreme pain at the site where the stone is causing the irritation

Other Common Kidney Diseases

Contact Details
  • Address: 81 Kim Keat Road Singapore 328836
  • Phone: 1800-KIDNEYS (5436397)
  • Email: contact_us@nkfs.org
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The National Kidney Foundation (NKF) is deeply committed to journeying with patients every step of the way in their treatment and rehabilitative care, advocating kidney health to prevent kidney failure and making a difference in the renal landscape, to benefit the community.

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