[Spartacus]

It could be kidney stones. My brother had it when he drank too much soft drinks too. One way of removing is by using sonar. It crushes the stones and it comes out from your pee.

Another way is to, get ready for this, insert a tube into your pee pee. Either way, stones crushed and gets removed when you pee.

A kidney stone, also known as a renal calculus (from the Latin ren, "kidney" and calculus, "pebble") is a solid concretion or crystal aggregation formed in the kidneys from dietary minerals in the urine. Urinary stones are typically classified by their location in the kidney (nephrolithiasis), ureter (ureterolithiasis), or bladder (cystolithiasis), or by their chemical composition (calcium-containing, struvite, uric acid, or other compounds). Kidney stones are a significant source of morbidity. 80% of those with kidney stones are men. Men most commonly experience their first episode between age 30–40 years, while for women the age at first presentation is somewhat later.

http://en.wikipedia.org/wiki/Kidney_stone