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- Folic acid is essential for the production of genetic material (DNA and RNA) and plays a key role in amino acid synthesis, which is critical for cell division and growth.
- It contributes to the formation of red blood cells and regulates homocysteine levels in the blood, reducing the risk of cardiovascular diseases.
- It supports adrenal gland function and the immune system, as well as improving mental health and cognitive agility, potentially being beneficial in Alzheimer’s prevention.
Folic acid, vitamin B9 or L-methylfolate, part of the B-vitamin complex, is important for metabolic processes such as DNA formation and regeneration in all body cells.
Its deficiency can prevent the production of new cells, necessary for functions such as wound healing. Significant damage to cellular DNA can increase susceptibility to disease, highlighting the importance of folic acid for overall health.
The main functions of folic acid include:
- It is an essential substance for producing genetic material (DNA, RNA).
- It is involved in the synthesis of amino acids involved in cell growth.
- It contributes to the formation of red blood cells.
- It reduces homocysteine levels in the blood.
- It supports adrenal function and the immune system.
- It calms and maintains a healthy nervous system.
- It improves the health of the gut microbiota.
Index
- 1 1. It is essential for producing genetic material (DNA, RNA)
- 2 2. It is involved in amino acid synthesis for cell growth
- 3 3. It contributes to the formation of red blood cells
- 4 4. It reduces homocysteine levels in the blood
- 5 5. It supports adrenal function and the immune system
- 6 6. It supports and calms the nervous system
- 7 7. It improves gut microbiota health
- 8 How much folic acid is needed daily?
- 9 Does it have side effects?
- 10 Folic Acid Supplements at HSN
- 11 Expert Insights
1. It is essential for producing genetic material (DNA, RNA)
Among the biochemical processes that could not occur without folic acid, DNA synthesis stands out, as it carries all human genetic information.
Similarly, it plays a crucial role in RNA synthesis, closely related to DNA and essential for protein production. Therefore, vitamin B9 presence in the body directly affects cell division.
2. It is involved in amino acid synthesis for cell growth
How many times have you heard that pregnant women need folic acid, even before conception? Indeed, taking vitamin B9 during pregnancy helps prevent serious and common birth defects.
3. It contributes to the formation of red blood cells
Folic acid plays a decisive role in the production of red blood cells, acting as a key component of certain enzymes.
In particular, it is essential for forming the heme group, a central component of hemoglobin responsible for binding iron. This process is closely linked to vitamin B12.
4. It reduces homocysteine levels in the blood
Folic acid is a versatile vitamin that helps maintain proper homocysteine levels—an amino acid that, when elevated, can damage blood vessels and increase cardiovascular risk.
Vitamin B9 can reduce the development of cardiovascular diseases by controlling homocysteine levels in the blood.
5. It supports adrenal function and the immune system
This B-complex vitamin helps adrenal glands produce essential hormones, including cortisol, which plays a key role in stress response and metabolism.
Additionally, folic acid contributes to DNA formation and repair, which is crucial for maintaining immune system function.
6. It supports and calms the nervous system
Some studies suggest this vitamin may enhance the effectiveness of antidepressant medications.
Other research links folate supplementation with improved mental agility and memory from age 50. Lower levels of B9 have been observed in Alzheimer’s patients compared to healthy individuals, suggesting a potential preventive role.
7. It improves gut microbiota health
Although dietary intake is necessary to meet requirements, intestinal microbiota can also synthesize folic acid.
It is mainly absorbed in the jejunum (middle section of the small intestine), while the liver acts as a storage organ until it is needed by tissues.
How much folic acid is needed daily?
To prevent deficiency, a daily intake of 400–800 mcg is recommended for adults (600 mcg for pregnant women). Certain habits may impair absorption, so it is important to ensure effective intake.
Reviewing your diet is essential to guarantee adequate intake of this micronutrient, which is found in a wide variety of foods.
Does it have side effects?
Even when consuming natural folate, some people may experience mood changes or symptoms such as irritability, anxiety, insomnia, muscle and joint pain, migraines, headaches, nausea, etc.
A helpful tip: these symptoms may be alleviated by taking a source of niacin alongside folate supplementation.
Folic Acid Supplements at HSN
The benefits of folic acid supplementation in reducing neural tube defects are undeniable, as is its vital role in overall health.
Key features include:
- Highly bioavailable—more effective than dietary sources.
- Helps bypass MTHFR mutation issues and inefficient enzymatic conversion.
- Avoids masking vitamin B12 deficiency.
- Prevents interactions with drugs that reduce enzymatic activity.
Expert Insights
Experts highlight three key points regarding folic acid:
Is it true that most of the population is deficient in folic acid?
Recent reports suggest that around 90% of the population has folate deficiency, rising to 99% in women.
This is particularly concerning, as deficiency in women directly impacts fetal development. Up to 70% of birth defects could be prevented if folate deficiency during pregnancy were corrected.
Can vitamin B9 help maintain mental capacity in older adults?
Studies from European universities show that older adults who consume recommended amounts of vitamin B9 maintain cognitive function longer. It may help slow cognitive aging.
Doubling the recommended intake has shown positive effects on memory, with participants demonstrating cognitive performance similar to individuals 5.5 years younger.
Does increased intake support heart and brain health?
Experts emphasize that nutritional medicine is underutilized in disease prevention.
They recommend vitamin supplementation, especially folic acid, not only to prevent neural tube defects but also because it significantly reduces cerebrovascular risk when combined with proper diet and supplementation.
Bibliographic Sources
- Folic Acid Supplements
- Natural or Synthetic Folic Acid
- Mesiano S, Jones EE. Fertilization, pregnancy, and lactation. In: Boron WF, Boulpaep EL, eds. Medical Physiology. 3rd ed. Philadelphia, PA: Elsevier; 2017:chap 56.
- Institute of Medicine (US) Standing Committee on the Scientific. Evaluation of Dietary Reference Intakes and its Panel on Folate, Other B Vitamins, and Choline. Washington (DC): National Academies Press (US); 1998. ISBN-10: 0-309-06411-2 ISBN-13: 978-0-309-06411-8
- Cortese C, Motti C. MTHFR gene polymorphism, homocysteine and cardiovascular disease. Public Health Nutr. 2001 Apr;4(2B):493-7.
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