Megadose C and stalls?

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Cubit - 16 Mar 2004 17:02 GMT

Has anyone else tried taking megadose Vitamin C during a low carb diet?

I recently upped my dose of Vitamin C to 12 to 14 grams per day using timed
release tablets. My weight loss didn't stop, but it did slow down quite
bit. I'm not sure if it is a coincidence or not.

(Linus Pauling reportedly took 17 grams per day of C.)

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Cubit - 18 Mar 2004 21:06 GMT

Two days after cutting my C back from 12 grams to 1 gram per day, I find I
am whooshing.

Cubit
308/263.5/165

> Has anyone else tried taking megadose Vitamin C during a low carb diet?
>
[quoted text clipped - 3 lines]
>
> (Linus Pauling reportedly took 17 grams per day of C.)

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emkay - 19 Mar 2004 23:42 GMT

>Two days after cutting my C back from 12 grams to 1 gram per day, I find I
>am whooshing.
>
>Cubit

This makes sense. In his "Diabetes Solution" book, Dr. Bernstein says this
about high doses of vitamin C:

"Dietary vitamin C is important to good health. In doses above 500 mg/day,
however, vitamin C supplements can destroy the enzymes on blood sugar test
strips and can also raise blood sugars. Finally, in levels higher than
about 400 mg/day, vitamin C becomes an oxidant rather than an antioxidant
and can cause neuropathies. If you are already taking supplemental doses
of vitamin C, I urge you to discontinue it or lower your dose to no more
than 400 mg daily. Only use the time-release form."

I haven't taken this advice yet myself, but I probably should. For the
past couple of years I've been taking 4 g /day in the winter and 1 g/day
for the rest of the year, and that (possibly combined with getting flu
shots) seems to have really reduced the number of colds I get to almost
zero. But after reading this I'm thinking of dropping the C supplement and
just going with whatever amount of C is in my multivitamin and veggies.

Em

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Cubit - 20 Mar 2004 02:56 GMT

> >Two days after cutting my C back from 12 grams to 1 gram per day, I find I
> >am whooshing.
[quoted text clipped - 20 lines]
>
> Em

I found this on allegations of Vitamin C causing oxidation:
"Does vitamin C promote oxidative damage under physiological conditions?
Vitamin C is known to function as a highly effective antioxidant in living
organisms. However, in test tube experiments, vitamin C can interact with
some free metal ions to produce potentially damaging free radicals. Although
free metal ions are not generally found under physiological conditions, the
idea that high doses of vitamin C might be able to promote oxidative damage
in vivo has received a great deal of attention. Widespread publicity has
been given to a few studies suggesting a pro-oxidant effect of vitamin C
(42,43), but these studies turned out to be either flawed or of no
physiological relevance. A recent comprehensive review of the literature
found no credible scientific evidence that supplemental vitamin C promotes
oxidative damage under physiological conditions or in humans (44). Studies
that report a pro-oxidant effect for vitamin C should be evaluated carefully
to determine whether the study system was physiologically relevant, and to
rule out the possibility of methodological and design flaws."

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