Kidney stones are described as stone-like lumps which can form in either one, or both kidneys. They are quite common, but to understand what they are, we have to discuss the function of the kidneys.

First of all, the kidneys are approximately four inches long and are shaped like a bean. There are two of them in the body and they are located near the back of the abdomen area, one on each side of the spine. The job of a kidney is to remove waste products from our blood and then pass this waste into the bladder along with excess fluids to be disposed of in the urine.

Kidney stones can be categorized into four main types. Calcium stones which are made up of calcium and phosphate or oxalate; struvite stones which are made of ammonia and magnesium (these ones can often be quite large); uric acid stones (the smallest and softest type of kidney stone); and cystine stones which are normally yellowish in color and look like crystals as opposed to stones. All kidney stones can come in different shapes, colors and sizes – from the size of a grain of sand to (in some extreme cases) the size of a golf ball.

Kidney Stones

Kidney stones are formed when the waste products collected by the kidney do not dissolve properly in the fluid that will make up the urine, which then forms little crystal-like substances that can accumulate in the kidney. Over time these can form a hard lump that looks like a stone – the kidney stone.

When kidney stones are formed, they will very often try to leave the body via the urinary system, which can create problems, especially if they become blocked.