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Kidney Disease & Disorders Community
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Why Has My GFR Decreased So Rapidly Over the Last 9 Months?

I'm a 52 year old man whose GFR over the last nine months dropped from 68 to 42.  The worst drop, from 52 to 42, occurred just over the last 3 months. A recent kidney ultrasound was normal, showing normal sized kidneys with no blockages.  Bladder output was normal too.  The 24 hour urine test I took just a couple months ago was also normal showing normal urinary output, creatinine clearance, and protein output. Physically, I feel great (no major aches and pains, breathing difficulties, problems urinating, etc.).  I've had type 2 diabetes for a number of years, but when I started a low carb diet about 18 months ago, my blood sugar control improved considerably (current A1C 5.7). I have moderately high cholesterol (I always have - runs in family), and my blood pressure is normal. So with the kidney ultra sound and 24 hour urine test results all showing normal, I'm at a loss as to why my GFR has been decreasing so rapidly.  Any of your thoughts or suggestions with regards to this decline would be greatly appreciated!  I have an appointment to see a Nephrologist next week, and I hope he'll be able to assist in getting this issue under at least some control.  Psychologically, I'm a wreck right now. If my GFR continues to decrease at its current rate, I'm worried I'll be on dialysis within a year.  Ugh!
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