The ongoing flow of blood from the heart to the body and back to the heart again is called circulation. Blood vessels carry blood throughout your body. Veins are the vessels that return blood to the heart.

A vasectomy is a safe procedure. But it does have risks. Read on to learn more.

The no-scalpel procedure is similar to a traditional vasectomy. But it's done without cuts (incisions) or stitches. And it generally results in faster healing. Read on for details.

A vasectomy can sometimes be reversed, restoring the flow of sperm out of the body. Read on for details about the procedure.

You may have noticed tiny red or blue bursts (spider veins). Or maybe you have veins that bulge or look twisted (varicose veins). If so, there are treatments that can help.

The most common way to treat spider and small varicose veins is sclerotherapy.

A successfully transplanted kidney works like a normal kidney to filter your blood. You won't need dialysis. But you will need to take medicines to keep your new kidney healthy.

A kidney transplant is the preferred treatment for kidney failure. It is a surgery to place a donated kidney into your body. This kidney takes over the job of filtering your blood. The transplant is the treatment closest to having your own healthy kidney.

Peritoneal dialysis is a way to cleanse the blood to treat kidney failure. It uses the lining of your abdomen, called the peritoneal membrane, and a special solution (dialysate).

Urodynamics studies are a series of tests that give your healthcare provider a close look at the working of your bladder and urethra. The tests can help your provider learn about any problems you have storing urine or urinating.