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The 2013–2014 survey reported that for adults ages 20 years and older, men consumed an average of 249 μg/day folate from food plus 207 μg/day of folic acid from consumption of fortified foods, for a combined total of 601 μg/day of dietary folate equivalents (DFEs because each microgram of folic acid counts as 1.7 μg of food folate).
The Food Fortification Initiative lists all countries in the world that conduct fortification programs, [9] and within each country, what nutrients are added to which foods. Vitamin fortification programs exist in one or more countries for folate, niacin, riboflavin, thiamin, vitamin A, vitamin B 6, vitamin B 12, vitamin D and
Signs of folate deficiency anemia most of the time are subtle. [4] Anemia (macrocytic, megaloblastic anemia) can be a sign of advanced folate deficiency in adults. [1] Folate deficiency anemia may result in feeling tired, weakness, changes to the color of the skin or hair, open sores on the mouth, shortness of breath, palpitations, lightheadedness, cold hands and feet, headaches, easy bleeding ...
For this reason, it is common in many countries (including the United States) that the B vitamins thiamine, riboflavin, niacin, and folic acid are added back to white flour after processing. This is referred to as "enriched flour" on food labels. B vitamins are particularly concentrated in meat such as turkey, tuna and liver. [3]
Folate (as a fortification ingredient, folic acid) functions in reducing blood homocysteine levels, forming red blood cells, proper growth and division of cells and preventing neural tube defects (NTDs). [30] In many industrialized countries, the addition of folic acid to flour has prevented a significant number of NTDs in infants.
This is because, unless fortified, plant foods do not contain reliable amounts of active vitamin B 12. Vegans are advised to adopt one of the following dietary options: [76] consume fortified foods 2-3 times per day to get at least 3 micrograms of vitamin B 12, or take at least 10 micrograms of B 12 as a supplement once per day,
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Well-researched human vitamin deficiencies involve thiamine (beriberi), niacin , [32] vitamin C (scurvy), folate (neural tube defects) and vitamin D (rickets). [8] In much of the developed world these deficiencies are rare due to an adequate supply of food and the addition of vitamins to common foods. [20]