HSA | FSA CARDS ARE NOW ACCEPTED

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.

The Impact of the HTR1A Gene on Mental and Cognitive Health

The field of genetic testing allows us to explore a vast range of possibilities in understanding how our genetic makeup affects different aspects of life. The HTR1A gene stands out as an important focus of research within mental and cognitive health studies. The production of the serotonin receptor 5HT1A depends on this gene which impacts our emotional intelligence and plays a role in romantic relationship success. The HTR1A gene displays remarkable mechanisms that control serotonin signaling processes within the brain. The neurotransmitter serotonin which regulates mood as well as other physiological functions such as emotions and sleep is commonly known as the "happiness hormone". This signaling process involves the 5HT1A receptor which is found on both presynaptic and postsynaptic neurons. When postsynaptic receptors become active they produce mood-enhancing effects but increased autoreceptor activity lowers serotonin levels which affects mental health. The genetic variant rs6295 of the HTR1A gene has received significant research attention because its minor 'C' allele results in elevated autoreceptor expression and diminished postsynaptic receptor expression leading to decreased serotonin neuron activity. The rs6295 variant of HTR1A gene shows connections to multiple cognitive and behavioral traits such as lower emotional intelligence and decreased closeness in relationships along with higher risk for anxiety and depression as well as impulsiveness and aggression, ADHD characteristics, impaired working memory performance and modified pain perception. Research into the genetic foundations of traits connected to the HTR1A gene enables us to better understand how people differ in managing emotions, forming social bonds and experiencing mental health conditions. The scientific validation for this genetic variant's direct effects remains under development yet research into these connections promises to advance our understanding about genetic influences on psychological health. People who want to learn about their genetic tendencies toward mental and cognitive health should consider using Precision Health & Wellness tests from PlexusDx. Genetic testing services enable individuals to discover potential genetic markers that help understand their emotional intelligence and mental health vulnerabilities as well as relationship dynamics. Studying complex genetic traits like HTR1A reveals extensive information about the genetic impact on our psychological experiences. The utilization of genetic testing and personalized health reports enables individuals to start a self-discovery journey that leads to proactive management of their health. Begin your journey to understanding your genetic blueprint through PlexusDx's Precision Health & Wellness tests which you can find on PlexusDx.com and purchase from Amazon and Walmart.

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.