Jennifer Theriault, PMHNP-BC

Psychiatric Nurse Practitioner | Functional & Metabolic Psychiatry | Root-Cause Mental Health

Jennifer Theriault, PMHNP-BC, is a Nurse Practitioner specializing in Functional and Metabolic Psychiatry, dedicated to uncovering the root causes of mental health challenges and guiding patients toward long-term emotional and cognitive wellness.

With over 27 years in healthcare, Jennifer’s approach integrates hormonal, nutritional, and metabolic interventions alongside circadian psychiatry, functional testing, and personalized therapeutics. Her practice blends evidence-based strategies with cutting-edge science, ensuring each patient receives a treatment plan tailored to their unique biochemistry, metabolism, and psychological health.

Innovative & Holistic Treatment Approach

Jennifer specializes in addressing conditions such as Anxiety, depression, ADHD, PTSD, OCD and other neuroinflammatory disorders, focusing on metabolic balance, hormone optimization, and cognitive resilience rather than symptom suppression.

Using a foundations first approach Her comprehensive method begins by establishing the core lifestyle foundations—how you move, eat, and sleep. Once these essential behaviors are stabilized, the focus shifts to restoring circadian alignment, optimizing cellular charge through grounding, sunlight, and red light exposure, supporting hydration, and refining sleep architecture. Together, these pillars create the conditions for both biochemical stability and emotional resilience.

Examples of Her Unique Approach

✅ Genetic Precision & Personalization

• Genetic testing to inform psychopharmacologic optimization

• Guidance for individualized diet and supplement strategies

• Integration of genetic insights into long-term preventive and restorative care

✅ Neuroendocrine and Metabolic Modulation

• Diet, movement and when appropriate GLP-1/GIP therapy supports for psychiatric and metabolic recalibration

• Oxytocin support for connection, emotional regulation, and parasympathetic tone

• Hormonal optimization for females and males

✅ Mitochondrial & Cellular Vitality

• Treatment stacks to support ATP production and neurotransmitter balance

• NAD+ and B12 for detoxification, methylation, and mitochondrial resilience

• Methylene Blue protocols for neuroprotection, cognitive clarity, and oxidative stress management

✅ Targeted Immune & Mood Regulation

• Low-Dose Naltrexone (LDN) to reduce neuroinflammation and stabilize mood

• Peptide therapies for brain-body restoration and metabolic signaling

✅ Thyroid & Biochemical Precision

• Advanced functional testing for thyroid health and hormonal synergy

✅ Lifestyle & Nervous System Coherence

• Sleep science, sensory regulation, and emotional clarity

• Movement, connection, and ancestral living principles

Beyond Traditional Psychiatry

Jennifer believes mental health cannot be addressed in isolation—her practice is not a conventional psychiatry clinic, but a metabolic psychiatry model integrating foundational health strategies:

🌞 Sleep & circadian rhythm alignment 💧 Hydration & nutrient-dense dietary strategies 🏃‍♂️ Movement & stress mitigation ❤️ Deep relationships & life purpose development

Her philosophy rejects one-size-fits-all medication management, instead weaving in CBT techniques, motivational interviewing, and supportive therapy into a comprehensive care model—never standalone talk therapy.

Currently advancing her expertise in Integrative and Functional Psychiatry through her fellowship with Psychiatry Redefined, Jennifer remains passionate about revolutionizing mental health care. She ensures her patients receive personalized, transformative treatment, helping them build sustainable mental clarity, metabolic balance, and emotional resilience. She is also actively studying to sit for The Menopause Society board certification in October 2025, further deepening her commitment to hormone health and neuroendocrine optimization across the lifespan.

Subscribe below to my substack!