Functional Medicine

Root-cause healing for lasting wellness.

A holistic approach that supports lasting wellness by targeting the root causes of weight gain, hormonal imbalance, and chronic health issues with personalized care.

Integrative Approach

Test. Understand. Then Act.

Lab + Genetic Testing
Personalized Plan

Now offering a FREE 15-minute consultation with our Functional Medicine Provider.

No-cost first conversation to understand what you’re working with — and whether a functional medicine workup is the right next step. No commitment.

Integrative approach

What is Functional Medicine?

Functional medicine takes a holistic approach to health and wellness, emphasizing prevention and well-being through in-depth communication and assessment between patients and providers. It prioritizes lifestyle-focused interventions to complement and strengthen traditional medical treatments.

By integrating personalized care with conventional methods, functional medicine aims to address the underlying causes of illness — using advanced lab testing, genetic analysis, nutrition, lifestyle adjustments, and holistic therapies to restore balance and optimize well-being.

Personalized Health Framework

Heal from the inside out

MEEt New Iowa Functional Medicine Provider

Nichole Carroll, ARNP, AGACNP

Root Cause Medicine

Nichole Carroll, ARNP, AGACNP is an ANCC board-certified Adult Gerontology Acute Care Nurse Practitioner specializing in functional medicine. With degrees in biochemistry and bioinformatics and 20 years of experience in medical and healthcare research, Nichole brings a strong evidence-based foundation to root-cause, patient-centered care.

Her areas of focus include gut health, fatigue and low energy, metabolic and hormonal health, inflammation, environmental exposures, and complex chronic concerns. She uses advanced diagnostic testing when appropriate and works collaboratively with patients to develop personalized plans that support whole-person health and long-term wellness.

OUR SERVICES

What We Help With

Functional medicine looks at the whole person to uncover contributing factors and create a personalized approach to better health.

Comprehensive Functional Medicine

Personalized care that looks beyond symptoms to understand the factors affecting your overall health, energy, metabolism, hormones, nutrition, and well-being.

Hormone & Metabolic Health

Support for hormonal balance, thyroid health, metabolism, energy, fertility, and weight-related concerns through personalized evaluation and care.

Gut, Nutrition & Inflammation

Address digestive health, nutrition, food sensitivities, inflammation, and other factors that may affect how you feel and function.

Brain + Body / Mental Wellness

Explore the connection between physical and mental health, including mood, brain fog, stress, fatigue, and other factors that influence overall wellness.

Wondering if Root Cause Medicine is right for you?

Start with a complimentary 15-minute discovery call with Nichole Carroll, ARNP , AGACNP our functional medicine nurse practitioner. Discuss your health goals, learn about our approach, and determine whether a comprehensive functional medicine evaluation may be a good next step.

*Please Note: This is an informational discovery call, not a medical visit. No diagnosis, prescription, or individualized medical treatment is provided during this conversation.

Meet our Founder

Dr. Laurie McCormick - MD, DFAPA, FMCP-M — Founder & Medical Director

Board-Certified Psychiatrist

Dr. Laurie McCormick- MD, DFAPA, FMCP-M is a board-certified psychiatrist, family physician, and Institute for Functional Medicine Certified Practitioner who integrates conventional psychiatry, functional medicine, and evidence-informed interventional treatments to address the biological, psychological, and lifestyle factors contributing to mental health and overall well-being.

Comprehensive Care Pathway

Personalized Root Cause Medicine Programs

For patients who need more than a single visit, our structured programs combine comprehensive assessment, advanced testing when appropriate, personalized treatment planning and ongoing support to address the underlying contributors to persistent symptoms.

Start with a complimentary discovery call with Nichole to determine the most appropriate next step.

Free Discovery Call

Connect with Nichole Carroll, ARNP , for a free 15-minute consultation to discuss your health goals and see if our functional medicine approach aligns with your needs.

Comprehensive Consultation

A deep-dive 60–90 minute intake reviewing your medical history, genetics, lifestyle, and symptoms to uncover the true root causes of dysfunction.

Advanced Diagnostic Testing

Targeted specialty lab panels (GI-MAP, DUTCH hormone, micronutrient, and metabolic markers) to obtain objective biological data.

Personalized Treatment Protocol

A tailored roadmap combining evidence-based nutrition, nutraceuticals, lifestyle adjustments, and ongoing physician follow-ups.

Conditions we can help with

What Functional Medicine can address.

Functional medicine is effective for a wide range of conditions, offering a personalized, root-cause approach to healing rather than just symptom management. Whether you’re struggling with persistent fatigue, digestive discomfort, or mood instability — functional medicine offers a proactive, science-backed pathway to reclaiming your vitality.

Anxiety, depression, and mood disorders

Chronic fatigue and brain fog

Hormonal imbalances and thyroid disorders

Digestive issues (IBS, leaky gut, food sensitivities)

Autoimmune conditions

Metabolic and weight management concerns

Chronic inflammation and pain

NOW RESTARTING

Metabolic Health & GLP-1 Membership Program

We are relaunching our comprehensive GLP-1 and metabolic membership program. Going beyond conventional weight management, our program combines precision medical management with functional lab insights, nutritional psychiatry, and sustainable lifestyle modifications—helping you achieve true metabolic health rather than short-term weight loss.

Physician Oversight:

Ongoing medical evaluation, safe titration, and dedicated clinical monitoring.

Root-Cause Lab Testing:

Baseline metabolic panels, insulin sensitivity evaluation, and hormone balancing.

Sustainable Nutrition:

Personalized dietary and muscle-preservation strategies tailored to your metabolism.

Lab Testing

Explore Advanced Testing +

Targeted biomarker panels to uncover the root cause of chronic symptoms.

Hormone & Adrenal Testing

DUTCH Complete™

Comprehensive sex and adrenal hormone metabolite analysis (cortisol, estrogen, progesterone, testosterone).

DUTCH Cycle Mapping™

Maps estrogen and progesterone patterns throughout the menstrual cycle.

Gut & Food Sensitivity

GI Microbial Assay Plus (GI-MAP®)

DNA-based qPCR stool test for parasites, pathogens, bacteria, and dysbiosis.

Food Sensitivity Panels (Immuno Bloodprint® / IgG Food Explorer)

Evaluates inflammatory and immune responses to food antigens.

GI Effects® Comprehensive Stool

Gut inflammation, digestion efficiency, and microbiome balance.

Targeted SIBO & IMO Breath Test

Diagnoses bacterial/methane overgrowth causing bloating and gas.

Metabolic, Nutrition & Genetics

Comprehensive Nutritional Evaluation (Metabolomix+)

Organic acids, amino acids, oxidative stress, and micronutrients.

SelfDecode DNA & Biomarker Panels

Genomic predisposition and personalized health insights.

Methylation Genomics

Evaluates MTHFR, COMT, and biochemical methylation pathway variants.

Hormone & Adrenal Testing

Hormones & Endocrine Function

Comprehensive evaluation of sex hormones, adrenal cortisol rhythms, and thyroid activity to address fatigue, perimenopause, weight resistance, and mood shifts.

FEATURED TEST

  • DUTCH Complete™
  • DUTCH Cycle Mapping™
  • Advanced Thyroid Panels.

Gut/microbiome

Gut Health & Microbiome

In-depth stool and breath testing to analyze digestive enzyme function, intestinal barrier integrity, nutrient absorption, and gut microbial balance.

FEATURED TEST

  • GI-MAP® (DNA Stool Testing)
  • SIBO & IMO Breath Testing
  • Food Sensitivity Panels.

Nutritional Status

Nutritional & Cellular Health

Detailed assessment of essential vitamins, minerals, amino acids, and antioxidants to target cellular deficiencies driving low vitality.

FEATURED TEST

  • Metabolomix+
  • Organic Acids Testing
  • Micronutrient Panels.

Metabolic Health

Metabolic & Cardiometabolic Markers

Evaluates insulin resistance, cellular energy production, and systemic inflammation far beyond standard routine fasting glucose tests.

FEATURED TEST

  • Fasting Insulin
  • HOMA-IR
  • Advanced Lipid Profiles

Genetics

Genetics & Genomics

Analyzes targeted gene variants (including MTHFR and COMT) to identify how genetic predispositions impact methylation pathways, cellular detoxification, nutrient utilization, and brain health.

FEATURED TEST

  • Methylation Panels (MTHFR, COMT)
  • Targeted Genomic Profiles.

Environmental Exposures

Environmental & Toxic Burden

Uncovers hidden toxic burdens that may contribute to stubborn systemic inflammation, immune system dysregulation, and brain fog.

FEATURED TEST

  • Heavy Metals Testing
  • Mycotoxin / Mold Panels
  • Environmental Pollutants.

Clinically Indicated Testing

Other Specialty Testing

Additional targeted diagnostic tools ordered selectively when clinically indicated to complete your personalized clinical roadmap.

FEATURED TEST

  • Autoimmune Markers
  • Chronic Inflammatory Panels (As Clinically Needed).

Expert care, innovative treatments, a holistic approach.

At Holistic Wellness & Psychiatry, we stay at the forefront of cutting-edge mental health and functional medicine — ensuring you have access to the most effective, science-backed options.

In a crisis right now?

If you or someone you love is in a life-threatening situation, please do not use this site. Reach out immediately — help is available 24/7, free, and confidential.

988
Suicide & Crisis Lifeline
741-741
Crisis Text Line
911
Emergency
Take the next step

Ready when you are.

Wondering if functional medicine is right for you? Book your 15-min discovery call with Nichole Carroll, ARNP today.