I linked wrong one first.
"Renal volume, cortical thickness, echogenicity and protein intake value were significantly higher in group 2 than group 1 and 3. Plasma levels of BUN and Cr in group 2 were significantly higher than other groups (p ˂ 0.001). Urine microalbumin and electrolyte levels were normal in all groups.
CONCLUSIONS:
The results of this study indicate that high protein intake, steroid usage, particularly the schemes, including boldenone undecylenate increases cortical echogenicity, thickness of renal parenchyma and renal volume in bodybuilders."