Kidney stones are small, hard deposits of minerals and various salts, usually yellow or brown. They are different in size: some as small as grains of sand, others as large as pearls. Stones vary in chemical composition. Basically, calcium, urate, struvite, and cystine are detected. However, in some people, different types of stones can occur simultaneously. If a person begins to produce less urine or in the urine, the concentration of calcium, oxalate, cystine and uric acid increases crystals begin to form. They will linger in the kidneys and, gradually increasing in size, form stones.Where do these stones come from?There are many conditions that increase the risk of developing urolithiasis, from frequent urinary tract infections and obesity to gout and various diseases of the gastrointestinal tract. Also at risk are people who drink little fluid, and those who have already experienced urolithiasis, the likelihood of relapse is quite high. For example, within five years after the discovery of the first stone, the probability that the second, according to various sources, will appear from 35 to 50%.If you want to know more about how to prevent and treat Kidney Stones, get a copy of this book to learn more.