Folate

Folate Full Name

Folate

Folate Introduction

Folate, also known as vitamin B9, is an essential water-soluble vitamin that plays a critical role in one-carbon metabolism, DNA synthesis, and repair. It acts as a coenzyme in the transfer of one-carbon units necessary for purine and pyrimidine biosynthesis, which are fundamental for cell division and growth. In human physiology, folate is primarily obtained through dietary intake from leafy green vegetables, legumes, and fortified foods, and it is metabolized intracellularly to tetrahydrofolate derivatives. These active forms participate in methylation reactions and homocysteine metabolism, making folate indispensable for cardiovascular health, neural development, and overall cellular function. Insufficient folate levels can impair DNA synthesis and methylation, leading to widespread cellular dysfunction.

At the molecular level, folate interacts with several key genetic targets that modulate its metabolism and physiological effects. Polymorphisms in the methylenetetrahydrofolate reductase (MTHFR) gene, particularly the C677T variant, significantly influence folate metabolism efficiency, resulting in elevated homocysteine levels and altered methylation patterns. Recent studies have highlighted the interaction between folate intake and the FTO gene, commonly associated with obesity, suggesting that specific genotypes may require tailored folate supplementation to mitigate risks such as spontaneous abortion. Furthermore, behavioral genetics research indicates that taste receptor genes can affect dietary folate preferences, and sociocultural factors further modulate folate status, highlighting the complex interplay between genetics, diet, and lifestyle in determining folate bioavailability and efficacy.

Clinically, folate deficiency has been strongly linked to a range of health issues, from neural tube defects and oral clefts in newborns to cardiovascular diseases and cognitive impairments in adults. Prenatal folate supplementation, particularly in women carrying high-risk MTHFR genotypes, has been shown to dramatically reduce the incidence of non-syndromic oral clefts and other congenital malformations. Beyond human health, agricultural studies have identified candidate genes regulating folate levels in staple crops like maize, offering potential strategies to biofortify food and address global folate deficiencies. These advances underscore a trend toward precision nutrition, where folate supplementation and dietary strategies are increasingly guided by individual genetic backgrounds, lifestyle, and even the nutritional profile of consumed foods, aiming to optimize health outcomes across populations.

Alternate Names for Folate

Folate; Folic acid; Vitamin B9; 5 Methyl THFA; 5 Methyltetrahydrofolate; Tetrahydrofolate; Tetrahydrofolic acid; THFA; PTEROYLGLUTAMIC ACID; PTEROYGLUTAMIC ACID

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• 1.Piko P, et al.; Folate Status Shaped by Taste Receptor Genetics and Sociobehavioral Modulation: Evidence from a Hungarian Cohort. Nutrients. 2026, 18(4):562.
  2.Mohseni GK, et al.; Association of spontaneous abortion with dietary folate intake in individuals with different genotypes of FTO gene. BMC Pregnancy Childbirth. 2025, 25(1):961.