Hello and welcome to HCM.
As an
Urologist, i must assure that the urea and
creatinine values, show your grandfather has kidney failure. A faulty diet, is not the cause of kidney failure.
The most likely cause in a 80 year old, is an obstructive
prostate gland. That will need to be evaluated, with an urine culture, PSA, and an
ultrasound scan of the abdomen.Treatment of prostate gland will depend on the reports.
Dietary advice is to restrict salt intake to 6gm daily, avoid fresh fruits, coconut water and any potassium rich food. Also try to restrict protein intake more than 40gm daily. When you visit your
nephrologist next, meet the dietitician and get the diet sheet. You must check your urea, creatinine, sodium, potassium and uric acid. You may contact me for any doubts.
Dr.Matthew J.Mangat.