Functional Medicine in Vancouver, WA

Science-based care in Vancouver, WA focused on identifying and addressing the root cause of your symptoms

Our Approach to Functional Medicine

Preventive care and daily lifestyle factors are central to our model. We place strong emphasis on nutrition, movement, sleep, stress regulation, and environmental exposures, recognizing that these inputs directly affect inflammation, metabolism, immune function, and hormonal balance. Treatment plans are individualized and often include targeted dietary strategies and carefully selected supplements rather than relying solely on medications, which may act only as temporary “band-aids” without addressing underlying dysfunction.

Our evaluations are more detailed than those of conventional primary care. We routinely assess micronutrient status, gut health, metabolic markers, and hormone balance to identify subtle imbalances that standard testing may miss. By “zooming in” on these foundational systems, we can uncover drivers of fatigue, inflammation, metabolic issues, immune dysregulation, and chronic symptoms.

Care is led by Dr. Sherilyn Foltz-Cook, a board-certified DO physician, and her team. All recommendations are grounded in current scientific evidence. When medications or hormones are indicated, we work with sterile, reputable compounding pharmacies to ensure quality, precision dosing, and safety. We also prioritize access by offering high-quality testing at competitive prices, allowing patients to pursue deeper diagnostic insight without unnecessary cost. Our functional medicine clinic is located in Vancouver, WA, at 16500 SE 15th St, Suite 100.

You're taking your vitamins but are they reaching your cells?

Most doctors only check nutrients in your blood, which really just shows what’s there at that moment. It doesn’t always tell us what your body is actually doing with those nutrients. We go deeper and look at what’s happening inside your cells, where nutrients are used.

We focus on how your cells are functioning and whether key processes, like methylation, are working the way they should. This helps us spot the gaps that can lead to things like low energy, weight gain, or just not feeling right overall.

A lot of people are already eating well and taking supplements but still don’t feel better. Sometimes the problem is that your body isn’t absorbing or using certain nutrients properly.

Testing Offered

Vitamins, Minerals, Amino Acids, Metabolites, Fatty Acids, Carbohydrate Metabolism, Trace Minerals, Antioxidants

Micronutrient Panel by SpectraCell

View Sample Report

Cell Science Systems

View Sample Report

Not feeling yourself? Don't blame your age, but check your hormones.

We help men and women feel better by getting to the root of hormone problems. If you’re dealing with brain fog, low sex drive, constant fatigue, or weight gain, hormones may be playing a role.

We don’t just look at lab numbers, but we connect them with how you feel, your stress level, diet, lifestyle, and what’s going on in your environment to see the full picture.

Our doctor is a member of The Menopause Society and combines solid medical research with personalized care that’s focused on helping you feel like yourself again.

Hormone Testing

Female

For general hormone assessment for both men & women
Measures estradiol, progesterone, testosterone, DHEA, cortisol, melatonin, metabolites. Includes daily cortisol rhythm and metabolite analysis.

Men

For those interested in detailed estrogen metabolism or detox pathways
Measures everything in Complete plus additional markers for estrogen metabolism. Helpful for those concerned about estrogen-driven conditions.

DUTCH

For women tracking menstrual cycle health, fertility, PMS
Measures hormones throughout menstrual cycle: estradiol, progesterone, testosterone, cortisol. Maps hormonal fluctuations across the cycle.

What's your gut feeling?

So maybe you’ve tried everything, but something still isn’t right. Certain foods don’t sit well with you, you’re bloated, sometimes nauseated, or dealing with diarrhea or constipation. You’ve tried all the trendy things like cutting out gluten, dairy, and tried all the detoxes and diets, yet the symptoms keep coming back.

One possible reason is that your gut microbiome is out of balance. Your gut is its own ecosystem that is made up of bacteria, viruses, fungi, and other microbes that play a huge role in digestion, immunity, and overall health.

Our goal is to figure out what’s actually going on in your gut, identify the imbalances, and create a plan to restore healthy function so your symptoms improve instead of being managed long term.

Are you ready to lose weight finally?

Ask anyone, they want to lose weight. But who actually does it the right way? And even if they do, a lot of people end up “skinny fat” by losing weight but losing muscle too. Muscle loss isn’t just cosmetic; it can affect your long-term health.

That’s why our medically supervised weight loss program is different. We use 503B pharmacies, which are federally regulated, germ-free, and provide safe, effective, clean medications.

When we prescribe GLP medications, we monitor your body composition to make sure you’re keeping your muscle mass. Why? Because losing muscle raises your risk for insulin resistance, metabolic issues, heart disease, and even cognitive decline.

Our program also includes one-on-one guidance with a DO physician and trained staff, covering nutrition, exercise, and personalized medication adjustments. It takes commitment but the results are real. Are you ready to do the work and do it right?

10%

OFF all vitamins & nutritional supplements

Other Testing Offered

GI-MAP Only

Comprehensive stool analysis for gut microbiome: bacteria, viruses, parasites, fungi; also gut inflammation markers. FOR: Those with chronic GI symptoms, dysbiosis, or general gut health concerns.

GI-MAP + Zonulin

Everything in GI-MAP plus zonulin levels (marker of intestinal permeability / "leaky gut"). FOR: Those suspected of gut barrier dysfunction, food sensitivities, or systemic inflammation.

Fecal Gluten Peptide ADD-ON

Detects presence of gluten fragments in stool. FOR: Those with suspected gluten exposure, gluten sensitivity, or celiac disease monitoring.

Resources

We offer supplements hand-selected by Dr. Sherilyn Foltz-Cook, available in our office at 10% off.

Designs for Health

Virtual Dispensary

FullScripts

All products are 10% OFF

Functional Medicine in Vancouver, WA

Our Approach to Functional Medicine

You're taking your vitamins but are they reaching your cells?