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.

Nail Biting

Nail biting is a widespread habit known as onychophagia which impacts people across different ages. The majority abandon this behavior over time but adults still face challenges with nail biting. This body-focused repetitive behavior (BFRB) creates multiple health problems such as nail damage along with skin infections and dental issues. Does genetic makeup play a role in determining who develops nail biting behavior? Investigating the genetic factors related to this habit will help us understand how to manage and overcome nail biting tendencies.

Genetic Traits and Risk Factors

Individuals frequently bite their nails as a way to manage stress and anxiety because these emotional states act as triggers for this behavior. People may develop a nail biting habit when their hands remain idle due to boredom. Children frequently pick up nail biting behaviors through observational learning by watching family members perform this habit. Nail biting shows links to mental health conditions such as ADHD and OCD with additional connections to similar BFRBs. Genetic factors may lead to the development of BFRBs like nail biting when there is an existing familial pattern of these behaviors. Research has established a connection between nail biting behaviors and a variant in the DLGAP3 gene. The manifestation of this habit shows significant influence from environmental factors.

Managing Nail Biting

Nail biting behaviors can be modified through behavioral therapy techniques including habit reversal training. Nail polishes that taste bitter prevent nail biting by providing an aversive taste sensation. Practicing relaxation techniques along with physical exercise and stress-relief activities helps people manage their root stress triggers. Through mindfulness and awareness training individuals learn to detect and stop their nail biting patterns. Diverting hand attention to alternative activities or items reduces nail-biting urges while helping to eliminate the habit.

Conclusion

Researching the genetic and environmental causes of nail biting enables people to develop effective management and cessation approaches. Studying genetic features tied to nail biting helps people understand their behavior and identify ways to stop it. Improve your nail health and general wellness by investigating Precision Health & Wellness tests available through PlexusDx. Learn how genetic insights can help you make better health choices by visiting PlexusDx.com and checking 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.