topicMethylfolate Cognition Randomized Trial
claimIt is reduced but requires conversion in the body to the active form utilized by cells [,].
evidence level3
citationAyoub George (2025)
sourceVitamins, Vascular Health and Disease
evidence table
Methylfolate Cognition Randomized Trial Evidence Table
Structured evidence table for Methylfolate Cognition Randomized Trial, generated from 2 reusable source documents in the Migaku knowledge base.
| topic | claim | evidence level | citation | source |
|---|---|---|---|---|
| Methylfolate Cognition Randomized Trial | It is reduced but requires conversion in the body to the active form utilized by cells [,]. | 3 | Ayoub George (2025) | Vitamins, Vascular Health and Disease |
| Methylfolate Cognition Randomized Trial | It is better absorbed (~85% bioavailability) than food folate (~50%) but must first be reduced before it can be converted to the active form 5-methyl-(6S)-tetrahydrofolate L-5-MTHF (or L-methylfolate) in the liver and digestive tract [,].shows the pathways of dietary folate and folic acid and their conversion to L-methylfolate, which is the biologically active form []. | 3 | Ayoub George (2025) | Vitamins, Vascular Health and Disease |
| Methylfolate Cognition Randomized Trial | This is true for L-methylfolate, as well as for other reduced forms of folate, such as folinic acid (leucovorin), where the active form is levofolinic acid (levoleucovorin). | 3 | Ayoub George (2025) | Vitamins, Vascular Health and Disease |
| Methylfolate Cognition Randomized Trial | 1 2 Vascular health depends on the integrity and function of endothelial cells, which line the interior surface of blood vessels. | 3 | Ayoub George (2025) | Vitamins, Vascular Health and Disease |
| Methylfolate Cognition Randomized Trial | Variants in this gene have been associated with low BH4 levels, as well as depression and ADHD. | 4 | Williams GE (2025) | The Role of GCH1 Deficiency and Tetrahydrobiopterin in Mental Health. |
| Methylfolate Cognition Randomized Trial | Treatment-resistant mental health concerns significantly contribute to society in terms of financial costs and individually by creating emotional and functional costs. | 4 | Williams GE (2025) | The Role of GCH1 Deficiency and Tetrahydrobiopterin in Mental Health. |
| Methylfolate Cognition Randomized Trial | An important yet little-recognized cause of treatment-resistant mental health conditions is tetrahydrobiopterin (BH4) deficiency. | 4 | Williams GE (2025) | The Role of GCH1 Deficiency and Tetrahydrobiopterin in Mental Health. |
topicMethylfolate Cognition Randomized Trial
claimIt is better absorbed (~85% bioavailability) than food folate (~50%) but must first be reduced before it can be converted to the active form 5-methyl-(6S)-tetrahydrofolate L-5-MTHF (or L-methylfolate) in the liver and digestive tract [,].shows the pathways of dietary folate and folic acid and their conversion to L-methylfolate, which is the biologically active form [].
evidence level3
citationAyoub George (2025)
sourceVitamins, Vascular Health and Disease
topicMethylfolate Cognition Randomized Trial
claimThis is true for L-methylfolate, as well as for other reduced forms of folate, such as folinic acid (leucovorin), where the active form is levofolinic acid (levoleucovorin).
evidence level3
citationAyoub George (2025)
sourceVitamins, Vascular Health and Disease
topicMethylfolate Cognition Randomized Trial
claim1 2 Vascular health depends on the integrity and function of endothelial cells, which line the interior surface of blood vessels.
evidence level3
citationAyoub George (2025)
sourceVitamins, Vascular Health and Disease
topicMethylfolate Cognition Randomized Trial
claimVariants in this gene have been associated with low BH4 levels, as well as depression and ADHD.
evidence level4
citationWilliams GE (2025)
sourceThe Role of GCH1 Deficiency and Tetrahydrobiopterin in Mental Health.
topicMethylfolate Cognition Randomized Trial
claimTreatment-resistant mental health concerns significantly contribute to society in terms of financial costs and individually by creating emotional and functional costs.
evidence level4
citationWilliams GE (2025)
sourceThe Role of GCH1 Deficiency and Tetrahydrobiopterin in Mental Health.
topicMethylfolate Cognition Randomized Trial
claimAn important yet little-recognized cause of treatment-resistant mental health conditions is tetrahydrobiopterin (BH4) deficiency.
evidence level4
citationWilliams GE (2025)
sourceThe Role of GCH1 Deficiency and Tetrahydrobiopterin in Mental Health.
Source documents