The use of anabolic steroids over a period of time by bodybuilders and athletes for attaining dramatic benefits can result in damage to the kidney, as per a paper that was presented at the American Society of Nephrology’s 42nd Annual Meeting and Scientific Exposition in San Diego, CA.

It is worth noting that this side effect of steroids was not recognized earlier.

It was remarked that habitual use of steroids may lead to severe health risks and harmful effects on the kidneys.

From Sciencedaily.com:

Reports of professional athletes who abuse anabolic steroids are increasingly common. Most people know that using steroids is not good for your health, but until now, their effects on the kidneys have not been known. Leal Herlitz, MD (Columbia University Medical Center) and her colleagues recently conducted the first study describing injury to the kidneys following long-term abuse of anabolic steroids. The investigators studied a group of 10 bodybuilders who used steroids for many years and developed protein leakage into the urine and severe reductions in kidney function. Kidney tests revealed that nine of the ten bodybuilders developed a condition called focal segmental glomerulosclerosis, a type of scarring within the kidneys. This disease typically occurs when the kidneys are overworked. The kidney damage in the bodybuilders has similarities to that seen in morbidly obese patients, but appears to be even more severe.

The study was conducted in the lab of Dr. Vivette D’Agati, MD at Columbia Univeristy Medical Center. Study co-authors include Glen Markowitz, MD, Joshua Schwimmer, MD, Michael Stokes, MD, Cheryl Kunis, MD, Vivette D’Agati, MD, (Columbia University Medical Center); Alton Farris, MD, and Robert Colvin, MD (Massachusetts General Hospital).