question: I  have cortical thinning but no one can tell me why...both kidneys...is there a particular cause?   I am 40 and have had many ultrasounds and kidney stones....Within a year I went from no thinning to severe thinning.  I  have high blood pressure, most recent blood panel....2 weeks ago...cholestrol, total 235 (h)....triglicerides....161 (h).....ldl cholestrol calc ....140 (h)....Have been diagnoised with stage 3 kidney disease....PKD....and cortical thinning.   I am 5'2" and weigh 180.....trying to loose weight through exercise and cutting out carboniated drinks.