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Fasting and Vision
Quote from
Neilky on April 19, 2020, 3:44 am
For a long time I was trying to ascertain if VA or blood sugar was causing my blurred vision. I still don't have the answer but I can tell you that fasting for 16 hours a day has dramatically improved my vision. You would assume therefore that it was a blood sugar problem but it doesn't seem to be as I have been monitoring that it does not correlate in any way at all.
Was curious if anyone had a theory on how fasting might affect VA levels if at all?
For a long time I was trying to ascertain if VA or blood sugar was causing my blurred vision. I still don't have the answer but I can tell you that fasting for 16 hours a day has dramatically improved my vision. You would assume therefore that it was a blood sugar problem but it doesn't seem to be as I have been monitoring that it does not correlate in any way at all.
Was curious if anyone had a theory on how fasting might affect VA levels if at all?
Ourania has reacted to this post.
Quote from
Neilky on April 19, 2020, 9:23 am
@ggenereux2014
https://www.ncbi.nlm.nih.gov/pubmed/8207753
Effects of fasting and 3,3',4,4',5,5'-hexabromobiphenyl on plasma transport of thyroxine and retinol: fasting reverses elevation of retinol.
Abstract
Male Wistar rats were injected ip with 0 or 20 mg/kg 3,3',4,4',5,5'-hexabromobiphenyl and blood samples were collected 1, 3, 6, 7, and 8 d later. At 8 d after the injection, serum retinol was increased 30% and serum thyroxine was decreased 26% relative to control values. These effects were apparently unrelated to transthyretin in that the biphenyl did not alter the proportion of thyroxine binding in vitro to the prealbumin fraction of serum proteins. Separate groups of control and HBBP-injected rats did not receive food on d 7 (i.e., 24-h fast) and d 8 after injection (i.e., 48-h fast). Fasting decreased the serum retinol and thyroxine concentrations as well as the proportion of thyroxine binding in vitro to the prealbumin fraction of serum. The decreases in retinol and thyroxine concentrations associated with fasting are therefore ascribed to a decrease in the concentration of transthyretin in circulation.
Could this be the reason for my sudden improvement!?
@ggenereux2014
https://www.ncbi.nlm.nih.gov/pubmed/8207753
Effects of fasting and 3,3',4,4',5,5'-hexabromobiphenyl on plasma transport of thyroxine and retinol: fasting reverses elevation of retinol.
Abstract
Male Wistar rats were injected ip with 0 or 20 mg/kg 3,3',4,4',5,5'-hexabromobiphenyl and blood samples were collected 1, 3, 6, 7, and 8 d later. At 8 d after the injection, serum retinol was increased 30% and serum thyroxine was decreased 26% relative to control values. These effects were apparently unrelated to transthyretin in that the biphenyl did not alter the proportion of thyroxine binding in vitro to the prealbumin fraction of serum proteins. Separate groups of control and HBBP-injected rats did not receive food on d 7 (i.e., 24-h fast) and d 8 after injection (i.e., 48-h fast). Fasting decreased the serum retinol and thyroxine concentrations as well as the proportion of thyroxine binding in vitro to the prealbumin fraction of serum. The decreases in retinol and thyroxine concentrations associated with fasting are therefore ascribed to a decrease in the concentration of transthyretin in circulation.
Could this be the reason for my sudden improvement!?
Quote from
Neilky on April 19, 2020, 10:08 am
@ourania Good timing! I highly recommend you try intermittent fasting for at least a week, skip breakfast, it's easy.
Report back please!
@ourania Good timing! I highly recommend you try intermittent fasting for at least a week, skip breakfast, it's easy.
Report back please!
Quote from
Ourania on April 19, 2020, 7:33 pm
For the last ten years or so we do not eat anything from 2 pm to the next day 7 am. That's a 17 hours gap. We found that eating in the evening gave us dry eyes, dry mouth, dental problems etc... Unfortunately this was not enough. But it WAS an improvement.
It most probably slowed down the progression of the problems. But we were not aware of the toxicity of Vitamin A in our food. Grant's work has been an immense help.
For the last ten years or so we do not eat anything from 2 pm to the next day 7 am. That's a 17 hours gap. We found that eating in the evening gave us dry eyes, dry mouth, dental problems etc... Unfortunately this was not enough. But it WAS an improvement.
It most probably slowed down the progression of the problems. But we were not aware of the toxicity of Vitamin A in our food. Grant's work has been an immense help.
Quote from
Neilky on April 20, 2020, 1:18 am
@ourania Interesting.. well in that case to expand on your original question then, yes a really high saturated fat meal will still give me some slight blurring but it won't last as long or be anywhere near as noticeable as pre 16hr fasting. The improvement from alcohol might still apply but as my vision is now so good I can't notice that anymore!
So if both our vision problems are a result of high of VA, I may be further down the detox road than you but the fasting has been key in the improvement in my vision. Just to expand on this, I started 16:8 fasting for a week before going on an all inclusive holiday. My vision improved in that week but the holiday with increased VA intake put me right back to where I was and it took me 2 weeks to get back to good vision.
Of course it remains to be seen if the fasting is having an additional benefit for me and the vision improvement is not VA related.
@ourania Interesting.. well in that case to expand on your original question then, yes a really high saturated fat meal will still give me some slight blurring but it won't last as long or be anywhere near as noticeable as pre 16hr fasting. The improvement from alcohol might still apply but as my vision is now so good I can't notice that anymore!
So if both our vision problems are a result of high of VA, I may be further down the detox road than you but the fasting has been key in the improvement in my vision. Just to expand on this, I started 16:8 fasting for a week before going on an all inclusive holiday. My vision improved in that week but the holiday with increased VA intake put me right back to where I was and it took me 2 weeks to get back to good vision.
Of course it remains to be seen if the fasting is having an additional benefit for me and the vision improvement is not VA related.
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