Folic acid, also known as Vitamin B9, is one of the most important nutrients recommended by all international medical organizations during the pre-pregnancy period and throughout pregnancy. Although many people associate it with preventing fetal abnormalities only, it has more broader importance that includes the mother’s health and the baby’s development throughout pregnancy.
Many pregnant women wonder whether folic acid remains important after the 12th week of pregnancy. In this article, we will cover the significance of folic acid for expectant mothers, along with scientific explanations of all relevant issues, including suggested dosages, dietary sources, the dangers of deficiency, and crucial, useful advice to help stabilize your pregnancy.
What is folic acid?
Folic acid is the synthetic form of folate (Vitamin B9) naturally found in food, and manufactured for commercial use in supplements and fortified foods.
Because folic acid is more stable than natural folate during processing and storage, it is added to processed foods and supplements to ensure the body gets enough. After ingestion, it transforms into active folate, which is utilized for cell division and growth.
The development of rapidly growing tissues, like the fetus and placental tissue, depends on both DNA synthesis and cell regeneration, both of which are made possible by folic acid. Additionally, it helps prevent some forms of anemia and produces mature red blood cells.
In order to support the fetus’s rapid growth and enhance oxygen transport to both mother and child, folic acid is crucial during pregnancy, particularly in the first trimester.
Benefits of folic acid in the first trimester
Folic acid is one of the most important supplements before pregnancy or right after confirming it. The first trimester is the most critical time for getting folic acid which helps in:
Preventing neural tube defects
In the first few weeks of pregnancy, the neural tube forms the brain and spinal cord, often before the mother even realizes she is pregnant. Taking folic acid regularly before and during the early weeks greatly reduces the risk of neural tube defects.
A daily intake of 400–600 micrograms of folic acid is recommended by medical organizations before pregnancy and at least during the first trimester.
lowering the chance of preterm birth and miscarriage
Certain pregnancy complications, like early miscarriage or preterm birth, have been linked to folic acid due to its role in supporting fetal and placental development.
Supporting placental formation and cell growth
Folic acid promotes the fast growth of the placenta’s tissues without causing significant abnormalities.
Does folic acid importance decline after the 12th week?
The preventive importance of folic acid for the neural tube decreases after the 12th week but does not fade completely, due to:
- The neural tube closes almost completely by the end of the 4th to 6th week of pregnancy. Therefore, its preventive role against neural tube defects is usually limited to the very early stages.
- After the 12th week, the fetus goes beyond the critical stage of neural tube development, which decreases its protective effect.
Meanwhile, its supportive role continues through:
Supporting cell growth
The fetus continues to grow rapidly in the second and third trimesters, requiring nutrients involved in DNA synthesis and cell division, including folic acid.
Protecting the mother from anemia
Because it is essential for forming mature red blood cells, a deficiency may lead to anemia, which is common in pregnancy.
Improving vascular health
Elevated homocysteine is a known risk factor for vascular diseases, so Folate reduces homocysteine levels in the blood.
The appropriate dosage of folic acid
The generally recommended dose for pregnant women is about 600 micrograms daily.
Your doctor may recommend a higher dose (around 4–5 mg daily) temporarily in specific cases, such as:
- A family history of neural tube defects.
- Use of anti-seizure medications.
- Genetically related conditions, such as the MTHFR mutation.
High doses should not be taken without medical supervision, as they may mask symptoms of Vitamin B12 deficiency or other problems.
Sources of folic acid
There are several natural and synthetic sources of Folic acid, such as:
Natural sources (folate)
They often provide amounts that do not meet the daily needs of pregnancy, making supplementation necessary. Natural folate sources include:
- Dark leafy greens, such as spinach, kale, and broccoli.
- Legumes, such as lentils, beans, and chickpeas.
- Citrus fruits, such as oranges and grapefruit.
- Whole grains, fortified bread, and fortified cereals.
- Beef liver (rich in folate but should be consumed in moderation).
- Dates.
Supplements (synthetic folic acid)
Folic acid is often included in most prenatal vitamins. It is recommended to consume it on an empty stomach for better absorption. To improve absorption, it is preferable to take it with a glass of vitamin C-rich orange or lemon juice.
To determine the appropriate dosage, speak with your doctor and select supplements that adhere to reliable medical standards.
Risks of folic acid deficiency
Pregnancy-related folic acid deficiency can result in many health issues, including:
- Brain or spinal cord abnormalities.
- Maternal megaloblastic anemia, with symptoms such as fatigue, shortness of breath, and pale skin.
- Other pregnancy complications, including preterm birth, intrauterine growth restriction, or an increased risk of miscarriage in some cases.
- High homocysteine levels.
Risks of excessive folic acid intake
The symptoms of a vitamin B12 deficiency may not be easily detected if the maximum daily recommended dosage, typically more than 1000 micrograms per day without medical supervision, is exceeded.
For some people, folic acid may also result in mild digestive problems like bloating, nausea, or decreased nutrient absorption.
Excessive or prolonged consumption without supervision is not advised because some research indicates that the accumulation of inactive folic acid in the blood may have unclear effects.
How to use folic acid safely?
To make sure you can safely benefit from folic acid, follow these guidelines:
- Do not abruptly stop taking it after the 12th week, without consulting a doctor.
- Have regular checkups to monitor folate, iron, and anemia.
- Add folate-rich foods to your meals every day.
- Follow your doctor’s recommendations precisely.
- Inform your doctor if you take medications that may interfere with folate absorption, such as certain epilepsy medications or methotrexate.
In conclusion…
Folic acid supports your pregnancy and your baby, especially in the early stages, as it protects the fetus from neural tube defects and other complications. Although its preventive role declines after the 12th week, its supportive role continues until the end of pregnancy. Therefore, it is recommended to continue taking it according to the advised dose, consume folate-rich foods, and avoid stopping it without medical guidance.