Functional and Integrative Care for Children & Adults

Offering a Root Cause Approach for those dealing with chronic, complex and oftentimes confusing health concerns. Our comprehensive approach to addressing complex illness will guide you on a journey of restoring health for you and your family.

Schedule a discovery call

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GUT HEALTH

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PEDIATRIC HEALTH

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ADULT HEALTH

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PANS/PANDAS

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MOLD ILLNESS

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THYROID

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HORMONES

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VIRTUAL CARE

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MCAS & HISTAMINE

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ECZEMA

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GUT HEALTH • PEDIATRIC HEALTH • ADULT HEALTH • PANS/PANDAS • MOLD ILLNESS • THYROID • HORMONES • VIRTUAL CARE • MCAS & HISTAMINE • ECZEMA •

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. Rather than chasing symptoms, I take time to understand your story, connect the dots, and identify the underlying factors contributing to your symptoms — so that we can finally resolve them.

Many of the people I work with have spent years searching for answers to conditions such as chronic gut & digestive issues, IBS, SIBO, histamine intolerance, mast cell activation (MCAS), POTS, mold illness, ADHD, PANS/PANDAS, eczema and chronic skin conditions, autoimmunity, chronic fatigue, and hormone imbalances.

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.

Pediatric Care

Individualized support for children navigating ADHD, PANS/PANDAS, OCD, tics, and anxiety, alongside eczema, hives, and digestive concerns such as constipation and tummy pain.

We look deeper into gut health, chronic infections and immune health to better understand your child’s symptoms.

Explore Pediatric Care →

How We Can Support You!

Adult Care

Personalized support for adults navigating MCAS, histamine intolerance, IBS, SIBO, thyroid concerns and autoimmunity alongside persistent fatigue and brain fog.

We look deeper into gut health, mold exposure, Lyme, EBV, and other chronic infections to better understand what is contributing to your symptoms.

Explore Adult Care →

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Looking for a smaller first step?

Not ready to commit but ready to feel supported in exploring you or your child’s root cause?

That’s where an Initial Health Assessment can be a great option.

During this in-depth appointment, we’ll explore you or your child’s health history, review previous labs, identify patterns that may be contributing to ongoing symptoms and determine the most appropriate next steps.

Explore the Initial Health Assessment

Client Testimonials

River's Mom

“We sought out Krista to help with our daughter’s ongoing gut issues. We had already seen multiple providers and tried different protocols, but each time we stopped the supplements, her loose stools and tummy pain would come right back.
Within just a few weeks of working with her, our daughter’s stools were solid and her tummy pain was gone. It had been years since she had been pain-free!
Kim P

“I highly recommend working with Krista. I struggled with chronic Lyme for over 10 years and have tried absolutely everything.
It was the first time I felt like someone was seeing and addressing ALL of me! Not just the Lyme, but my digestion and absorption, airway and sleep, mental health, and overall well-being.
My entire life has changed for the better. For the first time in a very long time, I can genuinely say that I feel great and I’m confident it will stay this way!
“We came to Krista for help with our 3-year-old son’s eczema after feeling like we had already tried everything.
Within just one week, we started noticing a difference. His skin was beginning to clear, and he was sleeping through the night again!”
Jessica M
Sarah H

“Krista has been an invaluable part of my healing journey. She is so thorough and truly loves getting down to the root cause of her clients’ health issues. After years of struggling and many practitioners, she effortlessly got down to what was really causing my migraines and digestive issues.

I am forever grateful.”
Elizabeth M

I came to Krista for help with a multitude of issues including depression, anxiety, insomnia, reflux - you name it, I struggled with it! Within a few weeks, my reflux was gone and my depression and anxiety had lifted as well as the quality of my sleep had greatly improved. Krista also helped us to find mold within our home. This led to healing for my husband and my son who were also struggling. I can honestly say that our work together healed my family and my marriage.

How we work together to bring clarity to your health

Book Your Complimentary Call

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!

Book a complimentary call

Fall Special 15% Off the Functional Blood Chemistry Analysis Package

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Have We Worked Together Before?

Whether you need a quick check-in, want to revisit your current plan, or have a new concern, returning clients can book individual follow-up visits as needed.