Root Cause Functional and Integrative Care for Children & Adults

Providing answers when nothing else has been working.

We help connect the dots for children and adults with ADHD, eczema, chronic gut issues, PANS/PANDA’s, mold illness, histamine intolerance, autoimmune conditions and other chronic health concerns.

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Summer Special 15% Off Functional Blood Chemistry Analysis Package

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Your body doesn't just decide to stop working. My job is to find out why.

I'm Krista Pereira, a Functional Medicine Nutritionist and the founder of Symbiosis Wellness. I help children and adults uncover the root causes behind chronic health concerns using a personalized, root-cause approach to functional medicine nutrition.

Many of the people I work with have spent years searching for answers to symptoms like chronic gut & digestive issues, IBS, SIBO, histamine intolerance, mast cell activation (MCAS), mold illness, ADHD, PANS/PANDAS, eczema, autoimmune conditions, chronic fatigue, and hormone imbalances. Rather than chasing symptoms, I take time to understand your story, connect the dots, and identify the underlying factors contributing to your symptoms.

Whether you're in Petaluma, Sonoma/Marin Counties or working with me virtually, my goal is to help you understand why your symptoms are happening so you can move toward lasting healing.

FUNCTIONAL TESTING • PEDIATRIC HEALTH • ADULT HEALTH • PANS/PANDAS • MOLD ILLNESS • THYROID • HORMONE HEALTH • VIRTUAL CARE • MCAS & HISTAMINE • GUT AND IMMUNE HEALTH •

Personalized Programs for Adults & Children

PEDIATRIC ROOT CAUSE CARE

For children struggling with:

✓ ADHD & Focus

✓ PANS/PANDAS

✓ OCD, Tics & Anxiety

✓ Eczema & chronic skin issues

✓ Gut Health, constipation & tummy pain

✓ Chronic Infections, Lyme & immune health

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ADULT ROOT CAUSE CARE

Helping adults with:

✓ MCAS & Histamine imbalance

✓ IBS & SIBO

✓ Thyroid & Autoimmunity

✓ Mold Illness

✓ Lyme, EBV & Chronic Infections

✓ Fatigue & Brain Fog

Learn more

FUNCTIONAL BLOOD ANALYSIS

Discover hidden patterns related to:

✓ Nutrient Deficiencies

✓ Thyroid Health and autoimmunity

✓ Blood Sugar and metabolic health

✓ Inflammation and oxidative stress

✓ Liver and detoxification

✓ Cardiovascular Risk

Learn more

How we work together to bring clarity to your health

Book Your Free Discovery Session

I want to hear your story. This also allows us to decide if we are a good fit to work together and if the work that I do can truly benefit you or your child.
Get Functional Lab Testing

Let’s not guess about what your body needs. This way I can make recommendations that are far more specific and can get you the results that you want faster!
Individualized Care

Careful attention to your story as well as State of the Art Laboratory Testing allows me to make the right recommendations to help you or your child feel their best!