Over two decades, researchers have seen increased use of calcium, vitamin D and folic acid.
Like many antimalarials, they block the parasite's synthesis of folic acid, a key nutrient.
We already advise women thinking of starting a family and pregnant women to take folic acid supplements.
Increasing the folic acid intake of the general population would prevent between a third and two-thirds of these.
In 1999 he added the Luna bar line, aimed at women, with extra calcium, folic acid and iron.
Taking too much folic acid - over 1mg a day - can mask signs of vitamin B12 deficiency.
Folic acid supplementation is already recommended to prevent neural tube defects, which are often severe malformations of the brain.
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Like many antimalarials, they block the synthesis of folic acid, a key nutrient.
But since folic acid is suspected of enhancing the efficacy of the Merck product, including it caused few qualms.
The microbiomes of babies make more folic acid than do those of adults.
The charity Action Research, which has funded research into the benefits of folic acid, said the FSA decision was surprising.
The British Dietetic Association says that fortification would be a "simple way" to increase folic acid intake across the population.
Early Alzheimer's patients drinking the combination of these nutrients is akin to pregnant women taking folic acid supplements, Wurtman said.
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All told, women who took folic acid supplements before and early in pregnancy were 39% less likely to have autistic children.
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They have a change in a gene called Methylenetetrahydofolate Reductase, which alters the way folic acid is processed in the body.
The medical charity also supported the original research that discovered the link between folic acid and the prevention of spina bifida.
Stated differently, of every 10 children who would have become autistic without the folic acid supplements, 6 would be autistic with them.
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"All too often I would find myself explaining to staff why I needed folic acid or the regular scans, " Ms Ramoutar said.
Health experts now recommend that women who are planning to become pregnant take a supplement of vitamin D as well as folic acid.
An early symptom of B12 deficiency is anaemia, but taking large amounts of folic acid treats the anaemia without treating the B12 deficiency.
Importantly, the effect was only apparent if mothers took the folic acid supplements during the six weeks before and the six weeks after conception.
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Another analysis from the same Norwegian effort showed that children who did not get folic acid were more likely to have trouble learning to speak.
FORBES: More Prenatal Vitamins Could Mean Less Autism, Study Says
It said vitamin D and folic acid supplements should be offered by health staff to help ward off conditions such as rickets and spina bifida.
They also warned that folic acid interferes with some epilepsy drugs.
The microbiome also makes vitamins, notably B2, B12 and folic acid.
Are you getting enough folic acid and tocopherol in your diet?
Infection with German measles during pregnancy can lead to brain damage, while taking folic acid prior to conception can offer some protection against congenital neural problems.
Fumonisin also interferes with the cellular uptake of folic acid, a vitamin that is known to reduce the risk of neural tube defects in developing fetuses.
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The Lancet study compared cancer rates over a five-year period in 50, 000 people from several countries, some taking a folic acid supplement and some a placebo.
The latest figures also show that fewer women are smoking and drinking alcohol during pregnancy and more are taking recommended supplements - folic acid and vitamin D.
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