Functional Medicine in Lawrenceville, NJ | Princeton Integrative Health

If you have been told your labs are "normal" but you still feel exhausted, in pain, or stuck, you are not imagining it. Millions of people across New Jersey cycle through conventional medical appointments without ever getting a real answer. Princeton Integrative Health, located at 133 Franklin Corner Road in Lawrenceville, NJ, was built specifically for those people.

PIH does not manage symptoms. It investigates root causes. Using advanced diagnostics, personalized care plans, and a collaborative team model, the clinic helps patients in Lawrenceville, Princeton, and throughout Mercer County finally understand what is driving their health challenges, and what to do about it.

Ready to find answers? Schedule a complimentary consultation with the PIH team today.

What Is Functional Medicine, and Why Does It Matter in Lawrenceville?

Functional medicine is a science-based approach to healthcare that treats the body as an interconnected system rather than a collection of isolated parts. Instead of prescribing a medication for each symptom, a functional medicine provider asks a more fundamental question: why is this happening?

At Princeton Integrative Health, that question drives everything. The clinical team examines how genetics, environment, nutrition, lifestyle, and stress interact to create or sustain illness. This model is especially valuable for patients dealing with complex, chronic conditions that conventional medicine has not resolved.

Common reasons Lawrenceville and Princeton-area residents seek functional medicine care:

• Persistent fatigue that does not improve with rest or sleep
• Unexplained weight gain or difficulty losing weight despite diet changes
• Chronic pain, including back pain, joint pain, and headaches
• Autoimmune conditions such as Hashimoto's, lupus, or rheumatoid arthritis
• Hormonal imbalances, including perimenopause and thyroid dysfunction
• Digestive issues, including bloating, IBS, and nutrient malabsorption
• Brain fog, anxiety, or mood changes without a clear diagnosis

According to the Institute for Functional Medicine, functional medicine practitioners spend significantly more time with patients than conventional physicians, allowing for the kind of deep clinical investigation that chronic illness demands. That time investment is central to how PIH operates.

"Rather than the PCPs I'd experienced over the past few years, I got time, focus, thought-provoking questions and answers... I really enjoy working with Jenna and Dr. V." — Marcia M., PIH patient

The PIH Approach: Co-Creating Health with Every Patient

Princeton Integrative Health operates on a principle that sets it apart from most clinics in the Princeton area: health is something the provider and patient build together. The PIH team calls this co-creation, and it shapes every appointment, every treatment plan, and every follow-up.

This is not a "pill for an ill" model. It is a prescription for life.

Step 1: Comprehensive Consultation

Every patient journey begins with a thorough intake that goes well beyond a standard physical. Dr. Vincent Leonti and the clinical team explore your full symptom history, lifestyle factors, past diagnoses, and long-term health goals. This session typically uncovers patterns and connections that previous providers missed.

Step 2: Advanced Diagnostic Testing

PIH uses specialized testing that most conventional practices do not offer. These assessments identify hidden drivers of chronic illness, including:

• Gut microbiome imbalances and intestinal permeability
• Hormonal dysregulation, including thyroid, adrenal, and sex hormones
• Nutrient deficiencies and metabolic inefficiencies
• Inflammatory markers and immune system triggers

Step 3: A Personalized Treatment Plan

Test results inform a care plan built specifically for you. Treatments may combine nutrition protocols, targeted supplementation, advanced therapies, and lifestyle interventions. Nothing is generic. Every recommendation is grounded in your individual biology.

Step 4: Ongoing Monitoring and Adjustment

Your plan evolves as your health improves. The PIH team provides continuous clinical oversight, adjusting protocols as needed and tracking measurable progress over time. Patients do not get handed a pamphlet and sent home. They get a dedicated care team.

The result: patients in Lawrenceville and the surrounding area consistently report not just symptom relief, but a fundamentally different relationship with their own health.

Specialized Therapies Available in Lawrenceville, NJ

Princeton Integrative Health offers a suite of advanced, evidence-informed therapies that go well beyond what most New Jersey clinics provide. These are not add-ons. They are core to the PIH clinical model.

Hyperbaric Oxygen Therapy (HBOT)

Hyperbaric Oxygen Therapy delivers 100% pure oxygen in a pressurized chamber, significantly increasing the amount of oxygen available to tissues throughout the body. At elevated pressure, oxygen dissolves directly into plasma, reaching areas where circulation is compromised.

PIH uses HBOT to support patients dealing with a wide range of conditions, including chronic fatigue, Lyme disease, post-surgical healing, brain injuries, diabetes-related complications, and inflammatory conditions. Learn more about HBOT at PIH.

Cold Laser Therapy (FX-405)

Cold Laser Therapy, also called low-level laser therapy, uses targeted light energy to stimulate cellular repair, reduce inflammation, and relieve pain without surgery or medication. The FX-405 system used at PIH is FDA-cleared and has been shown to address over 200 conditions.

Conditions commonly treated with Cold Laser at PIH include:

• Chronic low back pain
• Plantar fasciitis
• Joint inflammation and arthritis
• Musculoskeletal injuries and post-surgical recovery
• Neuropathic pain

There is no downtime, no side effects, and no incisions. Explore Cold Laser Therapy.

Metabolic Reset Program

The Metabolic Reset Program is a six-week structured protocol designed for patients who want to lose 20 to 30 pounds, restore energy, balance hormones, and reclaim vitality, using real food and evidence-based clinical support. Patients consistently report improvements in sleep, digestion, mood, and body composition well beyond the scale.

This is not a diet program. It is a metabolic recalibration. See the Metabolic Reset Program.

Empowered Health Membership

For patients committed to long-term wellness, the Empowered Health Membership ($249/month) provides ongoing access to the full PIH care model. Membership includes continuous clinical oversight, coaching, and the tools needed to sustain the gains made during active treatment. It is PIH's most popular program.

Conditions We Address at Our Lawrenceville Clinic

Princeton Integrative Health works with patients across a wide spectrum of chronic and complex conditions. The common thread is that these are conditions where conventional medicine often falls short, either because the root cause goes undetected or because standard treatment protocols only address the surface.

Chronic Fatigue and Low Energy

Fatigue that persists despite adequate sleep is one of the most common complaints among new PIH patients. The functional medicine evaluation looks beyond thyroid panels to assess adrenal function, mitochondrial health, nutrient status, sleep quality, and inflammatory load, all of which conventional labs routinely miss.

Hormonal Imbalances

Hormonal shifts affect men and women at every stage of life. PIH evaluates the full hormonal picture, including estrogen, progesterone, testosterone, cortisol, insulin, and thyroid markers, to identify the specific imbalances driving symptoms like weight gain, mood swings, brain fog, and low libido.

Autoimmune Conditions

Autoimmune disease is driven by immune dysregulation, often triggered by gut permeability, chronic infections, environmental toxins, or unresolved inflammation. PIH uses advanced immune and inflammatory testing to identify these triggers and design protocols that address them directly.

Digestive Health

Gut health is foundational to overall wellness. PIH offers comprehensive stool analysis, intestinal permeability testing, and microbiome assessment to identify the specific imbalances driving symptoms like bloating, constipation, diarrhea, and food sensitivities.

Chronic Pain

For patients with back pain, joint pain, neuropathy, or pain that has not responded to conventional treatment, PIH combines functional medicine investigation with Cold Laser Therapy and targeted interventions to address both the biological drivers and the physical symptoms simultaneously.

"I took some simple tests I didn't even know existed that were able to detect where the problems were. We then went about addressing them with natural supplements, healthy lifestyle changes and ongoing support... Today I am feeling much better and many of my symptoms are vanishing." — Melinda M., PIH patient

Meet the PIH Clinical Team

Princeton Integrative Health is led by two clinicians who bring both medical rigor and genuine patient-centered care to every interaction.

Dr. Vincent Leonti leads the functional medicine practice at PIH. Known to patients as "Dr. Vinny," he combines conventional medical training with deep expertise in functional and integrative health. His approach is collaborative by design: he treats each patient as a partner in the investigation, not a passive recipient of a diagnosis. Patients frequently describe him as innovative, open-minded, and willing to engage in the kind of real clinical dialogue that most practices do not allow time for.

Jenna Richardson brings specialized expertise in nutrition, lifestyle medicine, and health coaching to the PIH care model. She works closely with patients on the day-to-day implementation of their care plans, providing the accountability and support that makes sustainable change possible.

Together, the PIH team has been recognized by Suburban Life, featured in multiple regional publications, and named among top providers in the area. The clinic has appeared in Suburban Life, Success XL, Words Journal, and received the Find a Top Doc badge.

Why patients choose PIH over other New Jersey functional medicine providers:

• Extended appointment times that allow for genuine clinical investigation
• A collaborative model where patients actively participate in their care
• Advanced testing not available through standard primary care
• A dedicated team that tracks your progress over time, not just at isolated appointments
• Specialized therapies (HBOT, Cold Laser, Metabolic Reset) under one roof in Lawrenceville

Serving Lawrenceville, Princeton, and Mercer County, NJ

Princeton Integrative Health is centrally located in Lawrenceville, NJ, making it easily accessible for patients throughout Mercer County and the broader Princeton metro area. The clinic regularly serves patients from:

• Lawrenceville, NJ (08648)
• Princeton, NJ
• Trenton, NJ
• Hamilton, NJ
• Pennington, NJ
• Hopewell, NJ
• West Windsor, NJ
• East Windsor, NJ

Clinic address: 133 Franklin Corner Road, Lawrenceville, NJ 08648 Phone: 609-512-1468

PIH is accepting new patients. The first step is a complimentary private consultation with one of the clinic's experts. This session is designed to help you understand whether functional medicine is the right fit for your situation, before any commitment is required.

"I'd heard about integrative medicine and attended a free workshop at PIH. I immediately resonated with the information they offered and the interconnected team approach, and signed up to work with them." — Angelique E., PIH patient