Last reviewed: May 12, 2026 Last updated: May 12, 2026

Written by: Jay Hastings , CEO of PlexusDx

Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations. He has more than 20 years of experience across healthcare innovation, genomics, laboratory operations, healthcare investing, and strategic finance. His work has included scaling healthcare startups, leading CLIA lab integrations, and helping expand consumer access to precision health tools.

Medically reviewed by: Jayden Lee, PharmD, EMBA

Jayden Lee, PharmD, EMBA, is the PlexusDx Medical Science Liaison with a PharmD and MBA specializing in pharmacogenomics and clinical product development, with a proven ability to bridge the gap between genomic research and practical patient outcomes. Dr. Lee has more than 10 years of professional experience in clinical pharmacy, academia, and research.

PlexusDx stands at the forefront of personalized health reporting by providing individuals with important genetic information.

Our exploration today leads us into the complex realm of genetics as we study the FOLH1 gene and its effects on diet and nutrition. What mechanisms does this gene influence in folate metabolism while identifying health implications of its genetic variations? The FOLH1 gene encodes the intestinal enzyme folate hydrolase 1 which manages the regulation of body folate levels. As a vital B-vitamin necessary for cellular functions folate appears in food sources that require breakdown before absorption. The FOLH1 enzyme initiates a process that transforms polyglutamylfolates into glutamates for bodily use. FOLH1 not only participates in folate metabolism but also regulates neurotransmitters through its enzyme function which splits N-acetyl-L-aspartyl-L-glutamate (NAAG) into N-acetylaspartate (NAA) and glutamate. The gene's function affects neuronal excitability and communication which demonstrates its extensive influence on neurological activities. PSMA, the protein product of FOLH1 shows high expression levels in prostate cancer cells which serves as a vital biomarker for diagnosis and provides a target for immunotherapeutic approaches. The FOLH1 gene's dual functions demonstrate its significance both as a participant in metabolic processes and as a contributor to disease mechanisms while illustrating its complex biological roles. The scientific evidence about the genetic model of FOLH1 remains limited which makes continued research necessary to understand its true implications precisely. The FOLH1 polymorphism known as rs202676 contains a minor 'G' allele which affects FOLH1 function and consequently alters methylation processes in the body. The presence of this genetic variant elevates the risk for neural tube defects including anencephaly which demonstrates the gene's possible involvement in developmental abnormalities. The 'G' allele carriers show both reduced IQ and visual memory capabilities as well as compromised arsenic methylation metabolism. Research on schizophrenia patients showed that those carrying this specific genetic variant did not respond to folate and vitamin B12 supplements with improvements in negative symptoms which indicates a complicated relationship between genetic differences and nutrient effectiveness. These research results show how analyzing the genetic details of FOLH1 can help tailor specific dietary and nutritional plans for individuals. Through genetic testing people learn about their genetic tendencies allowing them to make educated choices that enhance their health and wellness. People looking to turn genetic insights into actionable health decisions should examine Precision Health & Wellness tests from PlexusDx to create a tailored health plan. Understanding your genetic blueprint allows you to access valuable data that enables you to make smart choices regarding your nutrition and overall health. The FOLH1 gene functions as a crucial element in folate metabolism and neurotransmitter regulation while influencing disease pathology which highlights its role in determining individual health outcomes. Through genetic testing individuals gain access to customized health plans that reflect their personal genetic profiles. You can begin your journey to improved health by checking out Precision Health & Wellness tests through PlexusDx.com and purchase options at Amazon and Walmart to gain personalized health insights today.

Medical and Editorial Standards

Medical review process: This article was reviewed for medical accuracy, scientific clarity, evidence alignment, and appropriate discussion of genetics, medications, supplements, biomarkers, and health-related claims.

Sources and evidence: PlexusDx educational content is developed using peer-reviewed research, clinical literature, reputable medical references, and, where applicable, public health or regulatory guidance. References are included at the end of the article when scientific, medical, or health-related claims are discussed.

Commercial transparency: PlexusDx offers genetic testing, blood biomarker testing, personalized supplement recommendations, and related precision wellness services. Product mentions are intended to help readers understand available options and should not be interpreted as medical advice.

Important disclaimer: PlexusDx educational content is for informational purposes only and should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about medications, supplements, genetic testing, lab testing, or health-related care.