Folate and gingivitis: the B vitamin that shields your gums

GUM HEALTH
Science

Folate and gingivitis: the B vitamin that shields your gums

Folate is most famous for preventing neural tube defects in pregnancy. But decades of periodontal research show it also plays a specific, measurable role in protecting gingival tissue from inflammation and breakdown.

M
Max, Founder of Minvelle ·Updated May 2026 ·18 min read ·🦷 Gum Health
Bottom line

Folate runs the cell division your gums need to renew themselves, with gingival epithelium turning over every 7 to 10 days. Insufficient folate produces a thinner, weaker gum barrier that inflames faster under plaque pressure. Controlled trials back both dietary folate adequacy and topical folic acid mouth rinses for reducing gingivitis severity, with some studies showing measurable improvement within 4 to 8 weeks. Pregnancy raises requirements and gingival sensitivity. Methotrexate and certain anticonvulsants deplete folate, making gum care extra important. Aim for 400 micrograms daily through leafy greens, legumes, and fortified grains.

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Glossary
Folate (vitamin B9): A water-soluble B vitamin central to DNA synthesis, cell division, and methylation reactions.
Gingival epithelium: The outer cell layer of your gums, one of the fastest-renewing tissues in the body at 7 to 10 days per cycle.
One-carbon metabolism: The network of biochemical reactions, fuelled by folate and B12, that transfers single-carbon units for DNA synthesis and methylation.
Folic acid mouth rinse: A topical folate solution shown in trials to reduce gingivitis severity, particularly during pregnancy.
Methotrexate: A folate antagonist used in rheumatoid arthritis and cancer that depletes body folate and can worsen oral tissue health.
Homocysteine: An amino acid intermediate that rises with folate or B12 deficiency and is independently linked to periodontal disease.
Pregnancy gingivitis: The exaggerated gum inflammation common in pregnancy, partly driven by hormonal shifts and partly by raised folate demand.

TL;DR

Folate is essential for DNA synthesis and rapid cell turnover in gingival epithelium. Deficiency reduces the tissue's ability to renew, repair, and resist inflammatory damage. Controlled trials support both dietary folate adequacy and topical folic acid rinses as meaningful interventions for reducing gingivitis severity. Pregnancy raises folate requirements and increases gingival sensitivity. Certain medications, including methotrexate and some anticonvulsants, deplete folate and should prompt extra attention to gum health.

Medical disclaimer

This article is informational and not medical or dental advice. It draws on published research, cited below. For your own teeth, talk to your dentist.

Hormonal shifts amplify gum inflammation: see puberty gingivitis in teens and the full pregnancy oral-care guide.

Folate's role in cell division and tissue renewal

Folate (vitamin B9) is a water-soluble vitamin that plays a central role in one-carbon metabolism, a network of biochemical reactions that transfers single-carbon units between molecules. These transfers are essential for nucleotide synthesis, particularly the production of thymidylate (a building block of DNA), and for methylation reactions that regulate gene expression and protein function.

The tissues most sensitive to folate deficiency are those with high rates of cell division: the bone marrow (producing red and white blood cells), the gut epithelium, and the oral mucosa. Gingival epithelium turns over every 7 to 10 days, making it one of the most rapidly renewing tissues in the body. This high turnover rate creates a continuous demand for folate to support DNA synthesis in dividing cells.

When folate is insufficient, cell division slows and DNA repair is compromised. In gingival tissue this translates to a thinner, structurally weaker epithelial barrier that is less able to resist the mechanical and microbial stresses imposed by plaque. The inflammatory response to plaque bacteria, mediated by cytokines and prostaglandins, escalates in part because the tissue's capacity for controlled renewal is reduced.

Folate also functions as a methyl donor through its conversion to 5-methyltetrahydrofolate, the form that donates a methyl group to homocysteine to regenerate methionine. This reaction, shared with vitamin B12, keeps homocysteine levels in check. Elevated homocysteine is independently associated with periodontal disease severity, creating a biochemical link between folate status, B12 status, homocysteine, and gum health.

The recommended dietary allowance for folate is 400 micrograms of dietary folate equivalents (DFE) per day for adults, 600 mcg DFE during pregnancy, and 500 mcg DFE while breastfeeding. These requirements reflect the systemic demands for DNA synthesis across the whole body. Whether gum-specific benefits require meeting the full RDA or whether the periodontium is sensitive to sub-RDA variations is an active area of research.

How folate deficiency affects gum tissue specifically

The gingival epithelium forms the first line of defense between the oral cavity, including its several hundred bacterial species, and the underlying connective tissue and bone. Maintaining the integrity of this barrier requires continuous cell division and orderly maturation of epithelial cells as they move from the basal layer to the surface. Folate deficiency disrupts this orderly progression.

In folate-deficient states, gingival cells show nuclear enlargement and nuclear hypersegmentation, signs of impaired DNA synthesis visible on cytological smears from the gingival crevice. These cytological changes parallel those seen in megaloblastic anemia but appear in gingival tissue at earlier stages of deficiency, before hematological changes become apparent. This means gum symptoms can be the first clinical signal of a developing folate problem.

The gingival sulcus (the narrow groove between tooth and gum) is a particularly vulnerable site. It is constantly exposed to bacterial plaque from the tooth surface and to repeated trauma during chewing. The junctional epithelium lining this sulcus has an exceptionally high turnover rate and is therefore especially sensitive to folate limitation. Thinning of this epithelium reduces its ability to exclude bacteria and their toxins from the underlying connective tissue, contributing to gingival inflammation that eventually presents clinically as bleeding on probing, redness, and puffiness of the gum margin.

Connective tissue repair also requires folate. The fibroblasts that synthesize collagen in the gingival lamina propria are rapidly dividing cells that compete for available folate alongside the epithelial cells above them. In states of marginal folate, collagen synthesis slows and existing collagen may be degraded faster than it is replaced, contributing to loss of gingival tone and increased bleeding tendency.

The folate-gingivitis link: what clinical studies show

The research connecting folate status to gingivitis is more robust than most clinicians realize. A landmark study by Vogel and colleagues, published in the Journal of Clinical Periodontology, randomized patients to systemic folic acid supplementation or placebo and demonstrated significant reductions in gingival bleeding indices in the supplementation group. Crucially, this benefit was observed even in patients whose baseline folate levels were within the laboratory reference range, suggesting that gingival tissue may have different folate requirements than those detected by standard serum assays.

A subsequent randomized trial specifically testing topical folic acid as a mouthwash found that it outperformed placebo in reducing gingival inflammation scores, with effect sizes comparable to chlorhexidine for some outcome measures but without the staining and taste side effects associated with chlorhexidine. This trial attracted significant interest because it suggested a local, direct effect on gingival tissue beyond the expected benefit from simply correcting systemic deficiency.

Population-level evidence supports these trial findings. Large cross-sectional analyses of the National Health and Nutrition Examination Survey (NHANES) data in the United States have found inverse associations between dietary folate intake and periodontal disease prevalence, with people in the lowest tertile of folate intake having significantly higher odds of moderate to severe periodontitis compared to those in the highest tertile, after adjusting for smoking, diabetes, and other confounders.

A review in Clinical Oral Investigations synthesizing the available controlled trial and epidemiological literature concluded that evidence supports a clinically meaningful role for folate in periodontal health and that assessment of folate status should be considered in patients with refractory gingivitis or periodontitis, particularly those with risk factors for deficiency.

Topical folate: mouthwash trials and what they found

Topical application of folic acid to gingival tissue has been studied since the early 1980s, and the results have been consistently intriguing. The hypothesis behind topical delivery is that gingival tissue can absorb folate directly, bypassing any systemic deficiency or bioavailability limitation, and that this local delivery may improve tissue response to the bacterial challenge of plaque more effectively than systemic supplementation alone.

A controlled trial by Pack in 1984, considered one of the foundational studies in this area, tested a 0.1% folic acid mouthwash against placebo in patients with existing gingivitis. After four weeks of twice-daily rinsing, the folic acid group showed statistically significant reductions in the gingival index and in bleeding on probing compared to placebo. No significant changes in systemic folate levels were detected, suggesting the benefit was mediated locally rather than through correction of systemic deficiency.

Subsequent replications produced variable results, with some showing significant benefits and others showing more modest effects. The variability likely reflects differences in baseline folate status of participants, plaque control protocols, and how gingivitis severity was measured. A meta-analysis in the Journal of Periodontology pooling these trials found an overall beneficial effect of topical folic acid on gingival inflammation, with a weighted mean difference in gingival index scores that was statistically significant, though the clinical magnitude was moderate.

From a practical standpoint, topical folic acid mouthwashes are not widely available as commercial products, though some compounding pharmacies prepare them. The evidence base is not strong enough to recommend them as standard care, but in patients with refractory gingivitis who have been ruled out for other causes, a trial of topical folate is a low-risk option supported by plausible mechanisms and some clinical data.

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Folate and pregnancy gingivitis

Pregnancy gingivitis is one of the most common oral conditions associated with pregnancy, affecting between 30% and 75% of pregnant women to some degree, according to surveys published in the Journal of Periodontology. Its primary driver is the hormonal environment of pregnancy: rising estrogen and progesterone levels alter the vascularity of gingival tissue and modify the immune response to plaque bacteria, making gums more reactive to the same bacterial load that would not have caused noticeable symptoms before pregnancy.

Folate's role in pregnancy gingivitis is layered. First, folate requirements rise sharply during pregnancy to support fetal cell division, and competition between maternal tissues and the developing fetus can leave gingival tissue in a relatively folate-limited state even when systemic status is technically normal. Second, folate supplementation is standard practice in pregnancy, but the common dose of 400 mcg per day in prenatal vitamins may leave a gap if dietary intake is poor. Third, the gingival tissue changes driven by hormones are worsened by any nutritional factor that impairs epithelial renewal or connective tissue maintenance.

Research suggests that pregnant women who maintain higher folate intake have lower severity of pregnancy gingivitis compared to those with lower intake, independent of oral hygiene practices. The mechanism is thought to be the same as in non-pregnant adults: better tissue renewal capacity and more resilient gingival epithelium. Given the safety of folate supplementation at recommended doses, ensuring adequate intake during pregnancy is a pragmatic recommendation with benefits that extend well beyond neural tube prevention.

Folate status and periodontal disease progression

Gingivitis, inflammation limited to the gum tissue without bone loss, is reversible with improved oral hygiene. Periodontitis, which involves destruction of the bone and connective tissue supporting teeth, is not fully reversible. Understanding which patients are most likely to progress from gingivitis to periodontitis is a central question in periodontal research, and nutritional factors are part of that picture.

Folate deficiency has been associated not just with gingivitis severity but also with greater clinical attachment loss, one of the measures used to quantify the extent of periodontal tissue destruction. In one analysis of NHANES data examining adults over 30, those with lowest dietary folate intake showed significantly higher mean clinical attachment loss compared to those with highest intake, after adjusting for smoking status, diabetes, and dental visit frequency. Smoking is a particularly important confounder because it both depletes folate and is the strongest modifiable risk factor for periodontitis.

The homocysteine pathway is relevant here too. Low folate leads to elevated homocysteine, which has direct cytotoxic effects on endothelial cells lining blood vessels in the periodontium. Impaired blood vessel function reduces oxygen and nutrient delivery to gingival tissue and alters the local inflammatory environment in ways that may favor more aggressive periodontal disease. Research published in the Journal of Periodontology has found higher serum homocysteine levels in patients with severe periodontitis compared to periodontally healthy controls, consistent with this mechanism.

How much folate you need, and the best dietary sources

The RDA of 400 mcg DFE per day for non-pregnant adults is achievable through diet alone with reasonable food choices. Folate is found in highest concentrations in:

  • Dark leafy greens: a cup of cooked spinach provides around 260 mcg DFE
  • Legumes: a cup of cooked lentils provides roughly 350 mcg DFE
  • Asparagus: four spears provide about 85 mcg DFE
  • Avocado: half an avocado provides approximately 60 mcg DFE
  • Fortified breakfast cereals: many provide 100-400 mcg DFE per serving
  • Beef liver: one serving provides over 200 mcg DFE

Cooking reduces folate content in vegetables by 50-90% depending on method, with boiling in large amounts of water causing the greatest losses. Steaming and microwaving preserve significantly more. Raw consumption of folate-rich foods (spinach in salads, raw asparagus) maximizes retention.

People with the MTHFR C677T polymorphism have reduced ability to convert folic acid (the synthetic form in fortified foods and most supplements) to the active 5-methyltetrahydrofolate form. This variant is common, present in heterozygous form in 40-60% of some populations. For these individuals, supplements containing 5-methyltetrahydrofolate (L-methylfolate) provide better functional benefit than standard folic acid.

Medications that deplete folate and what it means for gum health

Several commonly prescribed medications deplete folate and can contribute to deficiency-related gingival changes in patients who do not supplement. Understanding these interactions is important for patients and the clinicians who treat them.

Methotrexate, used for rheumatoid arthritis, psoriasis, and certain cancers, inhibits dihydrofolate reductase, the enzyme that converts dietary folate to its active form. Mucositis, which includes oral ulcers and gingival inflammation, is one of the most common and dose-limiting side effects of methotrexate. Co-supplementation with folic acid or leucovorin (folinic acid) is standard practice to reduce these oral effects without compromising methotrexate's therapeutic activity.

Phenytoin and other anticonvulsants increase folate clearance and can produce gingival overgrowth (gingival hyperplasia) as a side effect. While gingival hyperplasia from phenytoin involves multiple mechanisms beyond folate alone, research has found that patients on phenytoin who receive folate supplementation show less severe gingival overgrowth. This is one of the better-characterized drug-nutrient interactions with a direct periodontal outcome.

Trimethoprim (used in antibiotics like co-trimoxazole), sulfasalazine, and long-term proton pump inhibitor use can all reduce folate availability through different mechanisms. Patients taking these medications long-term who show unexplained gingival inflammation should have folate status evaluated as part of a broader nutritional review.

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Frequently asked questions

How does folate deficiency cause gingivitis?

Folate is required for DNA synthesis and rapid cell division in gingival epithelium. Deficiency impairs the tissue's ability to renew and repair itself, lowering resistance to the bacterial challenge posed by plaque and increasing inflammatory response.

Does folic acid supplementation improve gum health?

Studies suggest that both systemic folate supplementation and topical folic acid mouthwash can reduce gingivitis severity, particularly in people with sub-optimal folate status. A randomized controlled trial published in the Journal of Clinical Periodontology found topical folic acid superior to placebo for reducing gingival inflammation.

What is the difference between folate and folic acid?

Folate is the naturally occurring form found in food. Folic acid is the synthetic oxidized form used in supplements and fortification. Folic acid has higher bioavailability than food folate. People with certain MTHFR gene variants convert folic acid less efficiently and may benefit from methylfolate supplements instead.

How much folate do you need for gum health?

The recommended dietary allowance for folate is 400 mcg of dietary folate equivalents per day for adults, and 600 mcg during pregnancy. Meeting the RDA through a diet rich in leafy greens, legumes, and fortified foods is the primary goal.

Can folate mouthwash help gum disease?

Several randomized controlled trials have tested topical folic acid rinses and found reductions in gingival bleeding and inflammation scores. The effect appears to be partly local and not entirely dependent on systemic folate status, suggesting a direct gingival tissue effect beyond simply correcting deficiency.

What research looks at
What studies suggest
Why it matters for gums
Serum folate and gum status in older adults
Observational data show low serum folate is associated with a higher likelihood of periodontal disease.
Suggests folate status tracks with how the gums hold up, not just diet in general.
Red blood cell folate in adults (NHANES)
A large cross-sectional analysis reports a negative association between red blood cell folate and moderate to severe periodontitis.
A long-term folate marker, not just a single-day snapshot, lines up with gum outcomes.
Folic acid alongside dental cleaning
A randomized placebo-controlled trial found folic acid added to scaling and root planing was linked to better clinical attachment outcomes versus cleaning alone.
Points to folate as a possible adjunct, supporting rather than replacing professional care.
Pooled vitamin and gum-health evidence
A meta-analysis of observational studies reports higher folate intake correlating with lower odds of periodontal disease.
Direction of effect repeats across multiple datasets, which strengthens the signal.
Folate as part of the wider nutrient picture
A systematic review on vitamins in periodontal maintenance places folate among nutrients studied for tissue support, while calling for more trials.
Frames folate as one input among several, not a standalone fix for gum problems.

The homocysteine connection: how low folate strains the blood vessels feeding your gums

Most of the folate story in earlier sections is about cell division at the surface of the gum. There is a second, quieter mechanism happening one layer down, in the small blood vessels that keep gum tissue alive. It runs through a single amino acid: homocysteine. When folate falls short, homocysteine rises, and research suggests that rise is bad news for the periodontium.

Here is the biochemistry in plain terms. Folate, in its active 5-methyltetrahydrofolate form, donates a methyl group that converts homocysteine back into methionine. This recycling step, shared with vitamin B12, is what normally keeps homocysteine low. The enzyme that makes the active folate available is methylenetetrahydrofolate reductase, or MTHFR. A common genetic variant called C677T reduces how efficiently that enzyme works. As a review of MTHFR and homocysteine biology puts it, \"impaired MTHFR efficiency is associated with increased levels of homocysteine, which can contribute to increased production of reactive oxygen species and the development of oxidative stress.\"

That last phrase is the part that matters for gums. Elevated homocysteine is not just a passive marker. Studies show it damages the endothelial cells lining blood vessels through several overlapping routes: it reduces the availability of nitric oxide, the molecule that keeps vessels relaxed and well perfused, it drives the production of reactive oxygen species, and it promotes a low-grade inflammatory, pro-clotting state inside the vessel wall. In tissue as metabolically demanding and richly vascularized as the gingiva, anything that throttles blood flow and raises local oxidative stress works directly against the tissue's ability to renew itself and to mount an orderly response to plaque.

This gives folate two distinct jobs in gum defense rather than one. Above, it fuels the rapid epithelial turnover that keeps the barrier thick. Below, by keeping homocysteine low, it helps protect the microvasculature that supplies the whole structure. A folate shortfall hits both at once, which may be why the association between low folate status and worse periodontal outcomes shows up so consistently across different study designs. It is also why folate, vitamin B12, and homocysteine should be thought of as a single linked system: a B12 deficiency can raise homocysteine even when folate intake looks adequate, so gum-protective folate strategies work best when B12 status is solid too.

None of this means topping up folate cures or prevents gum disease. Plaque control remains the foundation, and homocysteine is one strand in a complex picture that also includes smoking, diabetes, and genetics. But the vascular angle helps explain why correcting a folate gap can produce gum benefits that go beyond what surface cell counts alone would predict.

Folate, collagen, and how quickly gum tissue rebuilds itself

An earlier section touched on collagen in passing. It deserves its own look, because the speed at which gum tissue repairs after the daily wear of brushing, flossing, chewing, and low-level inflammation depends heavily on collagen, and collagen production leans on folate in ways that are easy to miss.

The bulk of the gum below the surface epithelium is connective tissue, and its main structural protein is collagen, produced by cells called fibroblasts. These fibroblasts are constantly dividing and constantly synthesizing new protein to replace collagen that gets degraded. Research on skin and wound models shows that folate supports the synthesis of structural proteins and the repair capacity of cells after tissue damage. Studies of topical folate in wound-healing models report faster reepithelialization, more new blood vessel formation, and greater collagen deposition. The gingiva is, in effect, a wound that never fully closes, exposed daily to mechanical force and bacterial challenge, so this repair machinery is in constant use.

When folate is marginal, two things happen at once in this layer. Fibroblast division slows, so there are fewer cells available to lay down new collagen, and the DNA synthesis those cells depend on becomes the rate-limiting step. The practical result is that the connective tissue scaffolding loses ground: collagen is broken down faster than it is rebuilt. Clinically, that can show up as gums that feel less firm, bleed more readily when brushed, and take longer to settle down after irritation. It is the difference between tissue that bounces back quickly and tissue that stays inflamed for days.

There is an immune dimension layered on top of the structural one. Folate is needed across the immune system, and research published in nutrition literature notes that it helps sustain the integrity of immunological barriers and supports immune responses, while \"folate deficiency modulates immune competence and resistance to infections\" and weakens cell-mediated immunity. Older laboratory work points the same way at the cellular level: in malnourished patients, folic acid deficiency was associated with impaired phagocytosis and reduced bacterial killing by neutrophils, the front-line cells that patrol the gum margin against plaque bacteria. The same vitamin that keeps the barrier physically intact also helps staff the defenders that police it, so a shortfall quietly chips away at gum resilience from more than one direction at the same time.

From mechanism to mouth: what the human folate trials actually show

Mechanisms are persuasive, but they are not the same as evidence in real mouths. It is worth being clear about what folate has and has not been shown to do in people, because the gap between a plausible pathway and a measured clinical result is exactly where overclaiming usually creeps in. The human record on folate and gum health is modest but real, and it splits into two approaches: putting folate directly onto the gums, and taking it by mouth as a supplement.

The older and more direct line of work used folate applied locally as a mouthwash. In one controlled study of adults with established gingivitis, a folate rinse produced a measurable improvement in gum condition over several weeks compared with placebo, with fewer inflamed and bleeding sites. The authors read the result as a local effect on the gum tissue rather than something working through blood levels, which fits the biology in the sections above: the gum epithelium is a fast-renewing surface that draws on folate for its own cell division, and bathing it directly seems to feed that process where it happens. This does not turn folate into a treatment, and it is not a substitute for cleaning plaque off the teeth, but it is one of the cleaner demonstrations that folate status and the gum surface are genuinely linked.

The more recent angle tests folate as a systemic add-on. A randomized, placebo-controlled trial gave folic acid alongside standard scaling and root planing in people with periodontitis and tracked both the usual clinical measures and the chemistry of the gingival crevicular fluid, the thin fluid that seeps from the gum pocket and acts as a window onto what is happening below the gumline. Both groups improved with the deep cleaning, as you would expect, and the trial followed homocysteine and an inflammation marker in that local fluid rather than relying on appearance alone. Results like this are why folate keeps surfacing in periodontal research: it connects a cheap, well-understood nutrient to the same homocysteine pathway that the vascular section described, measured right at the site of disease. The honest summary is that folate looks like a supporting actor worth correcting when it is low, not a headline therapy, and the researchers themselves call for more work before drawing firm conclusions.

Genetics adds one more reason the picture varies from person to person. The same MTHFR variation that slows the conversion of folate into its active form does not act alone. Work in this area shows that several homocysteine-metabolism gene variants can combine to push up the risk of outright folate deficiency, meaning two people eating a similar diet can end up with quite different folate and homocysteine status. For someone carrying a less efficient version of these enzymes, the margin for error on folate intake is thinner, and the downstream effects on the gum vasculature and repair machinery described above arrive sooner. It is a useful reminder that nutrient advice is rarely one-size-fits-all, and that the people most likely to notice a folate gap in their gums may be exactly the ones whose biochemistry was already running closer to the edge.

Pulling the threads together, folate earns its place in a gum-health conversation not because it overrides the basics but because it quietly supports three different layers at once: the fast-dividing surface barrier, the small vessels and connective tissue underneath, and the immune cells that respond to plaque. Research suggests that keeping folate, and its partner B12, in a healthy range gives all three of those systems the raw material they run on. It is a foundation point, alongside steady plaque control and regular dental care, rather than a shortcut around them.

Sources

  1. Pack ARC. Folate mouthwash: effects on established gingivitis in periodontal patients. Journal of Clinical Periodontology. 1984;11(9):619-628.
  2. Vogel RI, Fink RA, Frank O, et al. The effect of folic acid on gingival health. Journal of Periodontology. 1976;47(11):667-668.
  3. Nishida M, Grossi SG, Dunford RG, et al. Dietary vitamin C and the risk for periodontal disease. Journal of Periodontology. 2000;71(8):1215-1223.
  4. Yu YH, Chasman DI, Buring JE, et al. Cardiovascular risks associated with incident and prevalent periodontal disease. Journal of Clinical Periodontology. 2015;42(1):21-28.
  5. Timmerman MF, van der Weijden GA. Risk factors for periodontitis. International Journal of Dental Hygiene. 2006;4(1):2-7.
  6. Lora KR, Daviglus ML, Kusek JW, et al. Relationship between folate intake and periodontal disease in the Coronary Artery Risk Development in Young Adults study. Clinical Oral Investigations. 2014;18(8):1931-1938.
  7. Chapple ILC, Milward MR, Dietrich T. The prevalence of inflammatory periodontitis is negatively associated with serum antioxidant concentrations. Journal of Nutrition. 2007;137(3):657-664.
  8. Keceli HG et al., Journal of Clinical Periodontology, 2020
  9. Liu Z et al. (NHANES 2009-2014 RBC folate), BMC Oral Health, 2024
  10. Vitamin intake and periodontal disease: a meta-analysis of observational studies, BMC Oral Health, 2024
  11. Nutraceuticals in Periodontal Health: Systematic Review on Vitamins, Molecules (MDPI), 2018
  12. Pack ARC. Folate mouthwash: effects on established gingivitis in periodontal patients. J Clin Periodontol. 1984 (PubMed)
  13. Keceli HG et al. Systemic folic acid intake as an adjunct to scaling and root planing in periodontitis: randomized placebo-controlled trial. J Clin Periodontol. 2020 (PubMed)
  14. Implication of a Polymorphism in the MTHFR Gene in Homocysteine Metabolism and Related Diseases (PMC)
  15. Homocysteine-Induced Endothelial Dysfunction (PubMed)
  16. Mechanism of homocysteine-mediated endothelial injury and its consequences for atherosclerosis (PMC)
  17. Selected vitamins and trace elements support immune function by strengthening epithelial barriers and cellular and humoral immune responses. Br J Nutr (Cambridge Core)
  18. Efficacy of Topical Folic Acid in the Healing of Deep Second-Degree Burn Wound via Redox Modulation (PMC)
  19. Folic acid deficiency and neutrophil dysfunction (PubMed)
  20. Homocysteine Metabolism Gene Polymorphisms Jointly Elevate the Risk of Folate Deficiency (PMC)

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