Folic acid and folate are forms of vitamin B9, an essential nutrient involved in multiple processes in the body. Although both terms are often used interchangeably, there are important differences between them that are worth understanding.
Folate is the natural form of vitamin B9 and is found in foods such as leafy green vegetables, citrus fruits, legumes, and some nuts. Folic acid, on the other hand, is the synthetic form of this vitamin, used in nutritional supplements and fortified foods.
Why is Vitamin B9 Important?
Vitamin B9 plays a fundamental role in the proper functioning of the body. As a water-soluble vitamin, the body does not store large amounts of it, and any excess is eliminated through urine. Therefore, it is necessary to maintain a regular intake through diet or, when indicated, through supplementation
Its main functions include:
- Participating in tissue growth and regeneration.
- Contributing to proper cellular function.
- Working together with vitamins B12 and C in protein synthesis and utilization.
- Supporting the formation of red blood cells, helping to prevent certain types of anemia.
- Playing a role in DNA production and repair, essential for the transmission of genetic information.
Symptoms and Consequences of Folate Deficiency
A deficiency of vitamin B9 can affect different body systems and cause symptoms such as:
- Fatigue and weakness.
- Digestive disorders such as diarrhea.
- Mouth ulcers.
- Inflammation of the tongue (glossitis).
- Premature changes in hair color.
- Growth delay.
- Different types of anemia.
In some cases, prolonged deficiency may be associated with metabolic and cardiovascular alterations due to increased homocysteine levels.
Folic Acid and Pregnancy: A Key Stage
Monitoring folic acid levels during pregnancy is especially important and should always be carried out under medical supervision.
Adequate supplementation before conception and during the first weeks of pregnancy helps prevent neural tube defects in the baby, such as spina bifida. In addition, several studies have shown that maintaining adequate folic acid levels may help reduce the risk of early miscarriage.
For this reason, medical guidelines recommend starting folic acid supplementation even before pregnancy, especially in women planning to conceive.
The Role of the MTHFR Gene in Folic Acid Metabolism
The utilization of vitamin B9 depends on several metabolic processes. One of the most important involves the enzyme produced by the MTHFR gene (methylenetetrahydrofolate reductase).
This enzyme converts folic acid into its active form, which is necessary to transform homocysteine into methionine, an essential amino acid for the synthesis of important cellular compounds.
Certain genetic variants of the MTHFR gene can reduce the efficiency of this process, altering folate metabolism and increasing homocysteine levels. In some cases, studying these markers may be clinically useful, especially in patients with a history of pregnancy complications, thrombosis, or vitamin deficiencies.
The Importance of Laboratory Monitoring
Maintaining adequate vitamin B9 levels is essential for overall health and particularly important during stages such as pregnancy. Clinical testing makes it possible to assess nutritional status and detect potential deficiencies early.
If symptoms compatible with folate deficiency appear, or in situations involving increased nutritional requirements, it is advisable to consult a healthcare professional to determine the need for specific laboratory tests and appropriate follow-up.