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Intermittent Fasting & elevated BUN and urinary uric acid

Answered on August 19, 2014
Created August 27, 2012 at 2:22 AM

Just a theory, but does anyone know if intermittent fasting could increase BUN and uric acid because with a shorter feeding window (as opposed to throughout the day), and thus with protein consumption being condensed/concentrated, the kidneys have less time and work harder to process a larger amount of protein which results in elevated BUN and uric acid levels? Even with slightly reducing protein to control acidity, I still am getting lip blisters which is a symptom of too low a pH.

93eea7754e6e94b6085dbabbb48c0bb7

on August 27, 2012
at 11:47 AM

Maybe eat all your meat at one meal with just fat and then do carbs and veggies at your second meal. This would give your body both time to focus on digesting the protein alone and you'd only be consuming it once a day. I think this could help.

72cd359efb959175e2c7786ea0450879

(68)

on August 27, 2012
at 06:41 AM

Both BUN and urine uric acid have been increasing over the last 6 mos. Some of my refeed windows are shorter now, like 6 instead of 8. And I have been eating 1lb of protein from a combination of meat, fish and poultry. I also take about 10-15g BCAAs while fasting. What else could it be?

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2 Answers

1
62442eec80b7d248ccfa08f98f736748

on January 14, 2013
at 09:09 AM

The short answer to your question is yes that is prob why your bun is going up. That's why they are always modifying the calculation of bun from a chem7 test by taking into account avg body weights, muscle mass, age gender And protein consumption.

Which is why clinicians use bun in th context of bun creatinine ratios AND clinical symptoms which is much more important than a single number. Unless you are also anuric or peeing less than 400 ml per day, it doesn't sound like u have renal failure to me...

So...yes your bun spike is reflecting the intermittent protein load you eat. If you don have any kidney problems then nothing to worry about

0
93eea7754e6e94b6085dbabbb48c0bb7

on August 27, 2012
at 02:34 AM

It could be possible but if you have the eating window of 8 hours I feel like our stomachs would be able to handle it. Also BUN doesn't get elevated unless you are really overeating on protein to the level of toxicity (the Jaminets says this is over a pound of meat and can lead to ammonia poisoning!)

My $.02: I limit my protein intake and do IF and my BuN which was previously elevated, declined.

93eea7754e6e94b6085dbabbb48c0bb7

on August 27, 2012
at 11:47 AM

Maybe eat all your meat at one meal with just fat and then do carbs and veggies at your second meal. This would give your body both time to focus on digesting the protein alone and you'd only be consuming it once a day. I think this could help.

72cd359efb959175e2c7786ea0450879

(68)

on August 27, 2012
at 06:41 AM

Both BUN and urine uric acid have been increasing over the last 6 mos. Some of my refeed windows are shorter now, like 6 instead of 8. And I have been eating 1lb of protein from a combination of meat, fish and poultry. I also take about 10-15g BCAAs while fasting. What else could it be?

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