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vitamin A

Started by John Larkin June 14, 2022
Eyesight is important in this biz.

Make sure you get lots of vitamin A, but not too much. It's good for
your retinas and can help prevent macular degeneration.

-- 

If a man will begin with certainties, he shall end with doubts, 
but if he will be content to begin with doubts he shall end in certainties.
Francis Bacon
On 6/14/2022 12:29 PM, John Larkin wrote:
> Eyesight is important in this biz. > > Make sure you get lots of vitamin A, but not too much. It's good for > your retinas and can help prevent macular degeneration. >
Bausch and Lomb make PreserVision AREDS pills for that purpose. I take them because I have the early stage of macular degeneration. tinyurl.com/rchzazrc
On Tue, 14 Jun 2022 13:28:39 -0500, John S <Sophi.2@invalid.org>
wrote:

>On 6/14/2022 12:29 PM, John Larkin wrote: >> Eyesight is important in this biz. >> >> Make sure you get lots of vitamin A, but not too much. It's good for >> your retinas and can help prevent macular degeneration. >> > >Bausch and Lomb make PreserVision AREDS pills for that purpose. I take >them because I have the early stage of macular degeneration. > >tinyurl.com/rchzazrc
That stuff looks good. I was disgnosed with major MD and got a pretty gloomy lecture about my future. Then they did a retinal tomograph just for fun and found a macular hole, not MD. That can probably be repaired, but the scare made me amp up on Vitamin A. My eyesight is horrible anyhow. My Mantis is indispensable when probing or soldering or hacking small stuff. -- If a man will begin with certainties, he shall end with doubts, but if he will be content to begin with doubts he shall end in certainties. Francis Bacon
On 14/06/2022 18:29, John Larkin wrote:
> Eyesight is important in this biz. > > Make sure you get lots of vitamin A, but not too much. It's good for > your retinas and can help prevent macular degeneration.
Vitamin A is one of the more poisonous vitamins. It is quite hard to be deficient in it with a normal diet. Eating polar bear liver can be fatal because of the high concentration of vitamin A in it. Second one down: https://blogs.unimelb.edu.au/sciencecommunication/2016/10/04/eating-these-animals-just-might-kill-you/# Or the infamous case of the UK guy with a carrot juice addiction. https://www.nytimes.com/1974/02/17/archives/carrotjuice-addiction-cited-in-britons-death.html Golden rice has been made by GM to avoid problems in the third world. https://en.wikipedia.org/wiki/Golden_rice -- Regards, Martin Brown
On Tuesday, June 14, 2022 at 1:30:08 PM UTC-4, John Larkin wrote:
> Eyesight is important in this biz. > > Make sure you get lots of vitamin A, but not too much. It's good for > your retinas and can help prevent macular degeneration.
Supplements will not reverse an existing condition. There is significant reduction of progression from intermediate to advanced AMD, 25%, which is something. AREDS and AREDS2 supplements do not prevent AMD onset. The beta-carotene bit is from an old study out of Finland that yielded surprising results. They were dosing the test subjects with huge 50,000 IU (or something ) dosing, and it was Finland so of course they were all drunks. Even supplementation with vitamin E has been shown to increase death from all causes by 13% for some reason no one knows. You can't even be outside during a thunderstorm, the vitamin E will attract a strike. https://www.nei.nih.gov/research/clinical-trials/age-related-eye-disease-studies-aredsareds2/about-areds-and-areds2 That's the one and only link I'm giving for that certain group of worthless link-collectors.
> > -- > > If a man will begin with certainties, he shall end with doubts, > but if he will be content to begin with doubts he shall end in certainties. > Francis Bacon
On Tuesday, 14 June 2022 at 20:23:23 UTC+1, Martin Brown wrote:
> On 14/06/2022 18:29, John Larkin wrote: > > Eyesight is important in this biz. > > > > Make sure you get lots of vitamin A, but not too much. It's good for > > your retinas and can help prevent macular degeneration. > Vitamin A is one of the more poisonous vitamins. It is quite hard to be > deficient in it with a normal diet. Eating polar bear liver can be fatal > because of the high concentration of vitamin A in it. Second one down: > > https://blogs.unimelb.edu.au/sciencecommunication/2016/10/04/eating-these-animals-just-might-kill-you/# > > Or the infamous case of the UK guy with a carrot juice addiction. > > https://www.nytimes.com/1974/02/17/archives/carrotjuice-addiction-cited-in-britons-death.html > > Golden rice has been made by GM to avoid problems in the third world. > > https://en.wikipedia.org/wiki/Golden_rice
Carrots don't contain vitamin A, they have carotenes. The rate of conversion to vitamin A in humans is close to zero.
tirsdag den 14. juni 2022 kl. 23.25.16 UTC+2 skrev Tabby:
> On Tuesday, 14 June 2022 at 20:23:23 UTC+1, Martin Brown wrote: > > On 14/06/2022 18:29, John Larkin wrote: > > > Eyesight is important in this biz. > > > > > > Make sure you get lots of vitamin A, but not too much. It's good for > > > your retinas and can help prevent macular degeneration. > > Vitamin A is one of the more poisonous vitamins. It is quite hard to be > > deficient in it with a normal diet. Eating polar bear liver can be fatal > > because of the high concentration of vitamin A in it. Second one down: > > > > https://blogs.unimelb.edu.au/sciencecommunication/2016/10/04/eating-these-animals-just-might-kill-you/# > > > > Or the infamous case of the UK guy with a carrot juice addiction. > > > > https://www.nytimes.com/1974/02/17/archives/carrotjuice-addiction-cited-in-britons-death.html > > > > Golden rice has been made by GM to avoid problems in the third world. > > > > https://en.wikipedia.org/wiki/Golden_rice > Carrots don't contain vitamin A, they have carotenes. The rate of conversion to vitamin A in humans is close to zero.
hmm https://academic.oup.com/ajcn/article/91/5/1468S/4597430
On 15/6/22 07:38, Lasse Langwadt Christensen wrote:
> tirsdag den 14. juni 2022 kl. 23.25.16 UTC+2 skrev Tabby: >> On Tuesday, 14 June 2022 at 20:23:23 UTC+1, Martin Brown wrote: >>> On 14/06/2022 18:29, John Larkin wrote: >>>> Eyesight is important in this biz. >>>> >>>> Make sure you get lots of vitamin A, but not too much. It's good for >>>> your retinas and can help prevent macular degeneration. >>> Vitamin A is one of the more poisonous vitamins. It is quite hard to be >>> deficient in it with a normal diet. Eating polar bear liver can be fatal >>> because of the high concentration of vitamin A in it. Second one down: >>> >>> https://blogs.unimelb.edu.au/sciencecommunication/2016/10/04/eating-these-animals-just-might-kill-you/# >>> >>> Or the infamous case of the UK guy with a carrot juice addiction. >>> >>> https://www.nytimes.com/1974/02/17/archives/carrotjuice-addiction-cited-in-britons-death.html >>> >>> Golden rice has been made by GM to avoid problems in the third world. >>> >>> https://en.wikipedia.org/wiki/Golden_rice >> Carrots don't contain vitamin A, they have carotenes. The rate of conversion to vitamin A in humans is close to zero. > > hmm https://academic.oup.com/ajcn/article/91/5/1468S/4597430
Conversion rates as low as 28:1... meaning a single carrot will give you sufficient vitamin-A for months of normal sight. We don't use much retinol. Buying vitamin A pills is just dumb.
John Larkin <jlarkin@highland_atwork_technology.com> Wrote in message:r
> On Tue, 14 Jun 2022 13:28:39 -0500, John S <Sophi.2@invalid.org>wrote:>On 6/14/2022 12:29 PM, John Larkin wrote:>> Eyesight is important in this biz.>> >> Make sure you get lots of vitamin A, but not too much. It's good for>> your retinas and can help prevent macular degeneration.>> >>Bausch and Lomb make PreserVision AREDS pills for that purpose. I take >them because I have the early stage of macular degeneration.>>tinyurl.com/rchzazrcThat stuff looks good.I was disgnosed with major MD and got a pretty gloomy lecture about myfuture. Then they did a retinal tomograph just for fun and found amacular hole, not MD. That can probably be repaired, but the scaremade me amp up on Vitamin A.My eyesight is horrible anyhow. My Mantis is indispensable whenprobing or soldering or hacking small stuff.-- If a man will begin with certainties, he shall end with doubts, but if he will be content to begin with doubts he shall end in certainties.Francis Bacon
Make sure you use a fume extractor when soldering. That flux isn't good for your corneas either. Cheers -- ----Android NewsGroup Reader---- https://piaohong.s3-us-west-2.amazonaws.com/usenet/index.html
John Larkin <jlarkin@highland_atwork_technology.com> wrote: 

> Eyesight is important in this biz. > > Make sure you get lots of vitamin A, but not too much. It's good for > your retinas and can help prevent macular degeneration.
I doubt anything besides maybe a good diet helps prevent macular degeneration. I never got any such advice before cataract surgery. Nothing against vitamins, I have always taken ordinary multivitamin multimineral supplements like One-A-Day or Centrum (regular). You don't know how bad your eyesight is until they stick new lenses in there. I was in-line street skating ("rollerblading" to the layman) for years, often at nighttime. Might have been even more fun with clear vision. DEFINITELY would have been more fun with a modern, lightweight, extremely bright headlamp.