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Vitamin C: In those predisposed to kidney stones, vitamin C at high doses increases the risk of them.
The key message is that for most of the population, it's best to get these vitamins and minerals from the diet, from foods. That's where they're best absorbed, and they're in the optimal biological ratios.
But just a few years later, she found herself reversing course, after rigorous clinical trials found neither vitamin E nor folic acid supplements did anything to protect the heart. Even worse, studies linked high-dose vitamin E to a higher risk of heart failure, prostate cancer and death from any cause.
For example, vitamin C supplementation alone does not appear to be beneficial, and vitamin C combined with vitamin E from 12-18 weeks’ gestation has been shown to increase risk of foetal loss or perinatal death.
In addition vitamin A is a teratogen, with high intake during pregnancy being associated with increased risk of congenital malformations.
They concluded that while folic acid and iodine are recommended for routine supplementation in order to reduce risk of developing major congenital malformations and support foetal neurodevelopment, supplementation of other vitamins and minerals is largely dependent on a woman’s abilities to meet recommended dietary intakes.
We at the VitaminCFoundation.org believe that it is terrible advice to tell a pregnant women that vitamin C isn't necessary on such flimsy evidence. . This report based on "meta studies" and of course there are few or none w/respect to vitamin C and pregnancy. The vitamin A studies are tainted, in our opinion, to scare the public away from a simple vitamin that is more effective for soft cancers than chemotherapy.
Linus Pauling,informed us that nothing is more important for a pregnant woman than to be getting as much vitamin C as if she was able to make it herself (but for the damaged GULO gene). My wife started at 10 g daily before conception and through lactation. . Easy pregnancy. Our son had one childhood disease - chicken pox for one day, one pox. As reported by members of our forum, if you want your child healthy, happy and strong - supplement vitamin C before conception - through pregnancy, then lactation and into childhood.
The vitamin A scare is also a lie, and the truth is the opposite. Birth defects can be reliably induced in animal models by restricting vitamin A. Vitamin A is vital to avoid birth defects. For the real story on vitamin A we recommend Roger J. Williams THE WONDERFUL WORLD WITHIN YOU (available online for free)
https://riordanclinic.org/wp-content/up ... in_You.pdf
There's even more evidence to suggest most popular vitamin supplements are essentially useless
Business Insider
A new study suggests that popular vitamin supplements are mostly useless. The most popular vitamin supplements, including vitamin C and calcium, ...
There's even more evidence to suggest most popular vitamin supplements are essentially useless - Business Insider
Study: Vitamin Supplements Don't Provide Health Benefits - U.S. News & World Report
Do Vitamin and Mineral Pills Actually Work? No, Say Scientists - Newsweek
Full Coverage
Researchers find most vitamins and minerals don't lower risk of heart disease
ABC News
Of the four most commonly used supplements -- multivitamins, vitamin D, calcium, and vitamin C -- none had a significant effect in regards heart health, ...
Evidence mounts that vitamins might not do anything for your health - Salon
Study finds popular vitamin and mineral supplements are useless - SlashGear
Study: Vitamins may not provide any real health benefits - WABC-TV
Your multivitamins aren't helping you live longer
Quartz
“Our review found that if you want to use multivitamins, vitamin D, calcium, or vitamin C, it does no harm—but there is no apparent advantage either,” ...
Study finds most popular vitamin, mineral supplements provide no health benefit
fox8.com
“Our review found that if you want to use multivitamins, vitamin D, calcium or vitamin C, it does no harm – but there is no apparent advantage either.”.
Study: Vitamin supplements provide no health benefit - GazetteNET
Which Vitamins Should I Take? A New Study Says There's One That's More Important Than The Rest - Elite Daily
Most vitamin and mineral supplements are useless, new study suggests - The Irish News
Full Coverage
Most of Your Vitamin Supplements Really Are Useless, Says Huge New Study
ScienceAlert
"Our review found that if you want to use multivitamins, vitamin D, calcium or vitamin C, it does no harm – but there is no apparent advantage either.".
Study reveals stark truth about vitamin supplements - Shawnee News Star
Study reveals stark truth about vitamin supplements - The Providence Journal
Study: Vitamin supplements provide almost no health benefits - SaukValley.com
.”High doses of certain fat-soluble vitamins such as vitamin A and vitamin E have been linked to cancer.” Water-soluble vitamins such as vitamins B and C, when taken in too-large doses, will just leave your body in urine. “Your money literally goes down the drain.” These are some of the vitamin mistakes you may not realize that you are making. If you take vitamins or supplements, check the label to make sure the US RDA is 100 percent or less.
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