What is folic acid?
- Jasmine Uchi, PharmD
- 17 hours ago
- 4 min read
Folic acid is a small but essential B vitamin that often goes unnoticed, yet it plays a major role in keeping the body healthy. It is the synthetic form of vitamin B9, known as folate, which is naturally found in foods like leafy greens, fruits, and beans. Your body depends on folate to make and repair DNA, produce healthy red blood cells, and support normal cell growth. Because folate is water-soluble and not stored in large amounts, you need a steady supply from your diet or supplements. Folic acid is commonly added to fortified foods and used in vitamins because it is easier for the body to absorb, making it a reliable way to meet daily needs, especially during times of rapid growth like pregnancy.
Why is folic acid important?
Folic acid plays a crucial role in early pregnancy by significantly reducing the risk of neural tube defects such as spina bifida, which develop in the first few weeks when many people do not yet know they are pregnant. For this reason, healthcare professionals recommend that anyone who could become pregnant take a daily folic acid supplement. Beyond pregnancy, folic acid also helps protect heart health by breaking down homocysteine, a compound that can build up and contribute to cardiovascular issues if levels get too high. It also supports the production of neurotransmitters, making it important for brain health and mood regulation. When folate levels are low, people may experience symptoms like fatigue, irritability, and difficulty concentrating.
Natural food sources of folate
You can find folate in a wide range of everyday foods. Some of the richest sources include:
Dark leafy greens such as spinach and kale
Beans, lentils, and split peas
Avocado
Citrus fruits such as oranges and grapefruit
Asparagus
Brussels sprouts
Fortified breads, cereals, and pasta
What is the daily recommended intake of folic acid?
Many people meet these recommendations through a balanced diet, but folic acid is also found in most multivitamins and prenatal vitamins, making it easy to maintain adequate levels.
Age or Life Stage | Daily Recommended Amount |
Infants up to 12 months | 65 to 80 micrograms |
Children ages 1 to 13 | 150 to 300 micrograms |
Teens ages 14 to 18 | 400 micrograms |
Adults | 400 micrograms |
Women of childbearing age | 400 micrograms |
Pregnant individuals | 600 micrograms |
Breastfeeding individuals | 500 to 600 micrograms |
What is folate deficiency?
Even though folic acid is widely available in foods and supplements, some people are at higher risk for low folate levels. Conditions that affect digestion such as Crohn’s disease or celiac disease can make it harder for the body to absorb nutrients. Heavy alcohol use, smoking, pregnancy, certain medications, and limited intake of fruits and vegetables can also contribute to deficiency. Symptoms vary but may include low energy, pale skin or anemia, mouth sores, irritability, poor appetite, and in more severe cases, neurological changes. A simple blood test can check folate levels if deficiency is suspected.
Is folic acid safe?
For most people, folic acid is very safe and well tolerated. Because it is water-soluble, the body excretes any extra through urine. The main precaution is avoiding very high doses unless recommended by a healthcare provider, since excessive amounts can mask a vitamin B12 deficiency.
Medications and Folic Acid
Certain medications can lower folate levels over time. These include some anticonvulsants, methotrexate, long-term antibiotics, and specific diabetes medications. If you take any of these, your healthcare provider may recommend monitoring your folate status or adding a supplemental form to help maintain healthy levels.
Vegan-friendly Folic Acid Supplements
Conclusion
Folic acid is a simple but essential vitamin that supports your overall health, from cellular function to brain and heart wellness. Although it is especially important during pregnancy, everyone benefits from maintaining strong folate levels. With the right foods, a reliable supplement, and consistent habits, it is easy to keep your folate intake where it needs to be.
Co-authored by: Christian Jauregui
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