Comparative Analysis of Treatment With Folate Forms in Clinical Practice

Area of Science:

• Biochemistry
• Nutritional Science
• Genetics

Background:

• Folate compounds are vital for DNA synthesis, methylation, and homocysteine regulation.
• Significant differences exist in the absorption, bioavailability, and clinical effects of 5-methyltetrahydrofolate (5-MTHF), folinic acid (CHO-THF), and synthetic folic acid (sFA).
• Understanding these differences is crucial for specific populations, including pregnant women and individuals with MTHFR/DHFR polymorphisms or autism spectrum disorders.

Purpose of the Study:

• To conduct a comparative analysis of clinical and biochemical studies on 5-MTHF, CHO-THF, and sFA.
• To evaluate the efficacy, safety, and optimal dosing of these different folate forms.
• To identify preferred folate forms for personalized or high-risk cases.

Main Methods:

• Comparative analysis of clinical and biochemical studies.
• Evaluation of efficacy, safety, and dosing of folate forms.
• Review of studies focusing on MTHFR/DHFR polymorphisms, autism spectrum disorders, and folate receptor autoantibodies.

Main Results:

• 5-MTHF and CHO-THF show advantages over sFA, including avoiding unmetabolized folic acid accumulation and reducing the risk of masking vitamin B12 deficiency.
• These forms offer improved metabolic support for individuals with genetic variants or folate receptor dysfunction.
• 5-MTHF aids brain development and may improve cognitive function and depressive symptoms, while CHO-THF shows promise for autism spectrum disorders.

Conclusions:

• For personalized or high-risk cases, 5-MTHF and CHO-THF are preferred folate options, ideally with vitamin B12.
• Synthetic folic acid (sFA) remains crucial for preventing neural tube defects in public health strategies.
• Monitoring is advised for sFA doses above 1000 µg/day to prevent masking B12 deficiency.