DO NOT take multivitamins
that contain folic acid.
and
If you are pregnant,
DO NOT take prenatal vitamins!
Folic acid supplementation is dangerous – especially for pregnant women
Women who take supplemental folic acid increase their breast cancer risk by 20-30%, according to a study in the American Journal of Clinical Nutrition. Researchers collected data on women's folic acid intake from multivitamins over a 10-year period – they found that the women who took multivitamins containing folic acid were more likely to be diagnosed with breast cancer than those that did not. 1,2
Another new study, has found that folic acid supplementation by pregnant women increases the risk of childhood asthma by 26% 5, and yet another study linked folic acid supplementation during pregnancy to increased incidence of respiratory tract infections in infants, especially those resulting in hospitalization.6
Most alarming was another study that compared women who took folic acid during their pregnancy to those that did not. Thirty years later those women who followed the typical recommendations to take folic acid were twice as likely to die from breast cancer.8 Shocking info huh!
If folic acid can have these dangerous effects, why is it included in most
multivitamins, prenatal vitamins and fortified grain products?
multivitamins, prenatal vitamins and fortified grain products?
The protective effects of folate against neural tube defects (NTDs) have received much attention in the past. Unfortunately, this knowledge and public attention did not result in a campaign by the U.S. government encouraging women to get plenty of natural dietary folate from vegetables – instead, pregnant women are pushed to take folic acid supplements.
Folic acid is chemically different from dietary folate, which results in differences in uptake and processing of these two substances by the cells in the intestinal wall. Some folic acid is chemically modified to be more similar to natural folate, but the intestinal cells are limited in how much folic acid they can modify – excess folic acid often enters the circulation unmodified. Scientists do not yet know the implications of circulating synthetic folic acid. Many Americans, through multivitamin use and consumption of fortified foods, are taking in excessive amounts of folic acid, and thus may have unmodified folic acid circulating in their blood – this could contribute to the cancer-promoting effects.9,10-11
The recommendation that pregnant women take folic acid supplements is especially troubling – these women could safely increase their folate status and prevent neural tube defects (NTDs) by eating green vegetables, but instead they are instructed to take folic acid supplements, which put them at risk for breast cancer later in life. The children are also put at risk –women who take folic acid supplements as a substitute for good nutrition fail to provide their unborn children with the additional nutrients in folate-containing foods. Maternal nutrition is a critical determinant of childhood health – there are inverse associations between maternal vegetable intake and childhood cancers.12-13
Rich sources of food folate
As a reference point, the U.S. RDA for folate is 400μg.
Below is the approximate folate content for a 100-calorie serving.16
Below is the approximate folate content for a 100-calorie serving.16
| Spinach, raw | 843 μg |
| Endive | 835 μg |
| Romaine lettuce | 800 μg |
| Asparagus, cooked | 750 μg |
| Mustard greens, raw | 700 μg |
| Collards, raw | 550 μg |
| Okra, cooked | 520 μg |
| Bok choy, raw | 500 μg |
| Brocolli Rabe, raw | 375 μg |
| Arugula, raw | 340 μg |
| Artichokes, cooked | 330 μg |
| Brussels sprouts, cooked | 300 μg |
| Broccoli, cooked | 300 μg |
| Cauliflower, raw | 225 μg |
| Red leaf lettuce | 225 μg |
| Celery, raw | 225 μg |
| Edamame | 225 μg |
| Tomatoes, yellow | 200 μg |
| Tomatoes, orange | 180 μg |
| Chickpeas | 150 μg |
| Red peppers, raw | 150 μg |
| Papaya | 90 μg |
| Snow/Snap peas, raw | 100 μg |
| Summer squash | 100 μg |
| Tomatoes, red | 85 μg |
| Strawberries | 75 μg |
| Oranges | 70 μg |
| Beets, cooked | 50 μg |
| Blackberries | 55 μg |
| Avocado | 50 μg |
| Sunflower seeds | 40 μg |
| Quinoa, cooked | 35 μg |
So with that being said... how do YOU feel about getting all your folic acid from food and not taking it in pill form? Does it scare you? Are you afraid to go against what our society has said is the "right way" for so many years?
Tell me!!









