9 min read

Where most healing starts at Aervita — and what conventional medicine often misses until it’s too late.

Every fall we see the same pattern.

A patient comes in with a thick stack of testing — methylation panel, comprehensive stool analysis, micronutrient assay, hormone work — and an even thicker stack of supplements they’ve been told to take. Twelve, fifteen, twenty different bottles. They’ve spent thousands. And they don’t feel better.

When we ask what they’re actually taking consistently, the answer is usually the same: a few of the exciting things (a peptide, a nootropic, an adaptogen they read about) — and almost none of the basics.

This is one of the most common reasons a protocol stalls. It’s also the easiest one to fix.

If you’ve ever wondered where to start — or where the slow, frustrating plateau in your own health journey might be hiding — start here. With the Foundational 5.

Why the Basics Matter (and Why They Get Skipped)

Two things make these five supplements so important.

First, they address the deficiencies we actually see in clinic. Not theoretical ones. The most common gaps we find on testing — vitamin D, B12, folate, zinc, omega-3, polyphenol-poor diets — are exactly the ones the Foundational 5 are designed to fill. Patients arrive at Aervita with low values on these markers more often than not, regardless of how clean they say their diet is.

Second, conventional medicine rarely checks for any of this until the consequences show up downstream. A standard primary-care annual physical doesn’t routinely measure vitamin D, omega-3 status, magnesium, zinc, B-vitamin metabolites, CRP, or homocysteine — or it measures them with the wrong test. By the time these deficiencies start to cause something visible — fatigue, elevated cardiovascular risk markers, declining cognition, weakened immunity — months or years have passed. The damage is upstream, but the diagnosis is downstream.

Functional medicine works by treating root causes. But “root cause” doesn’t always mean exotic cause. The most common root causes we see at Aervita are the boring ones: nutrient depletion, chronic low-grade inflammation, gut microbial imbalance, and disrupted sleep.

You can spend a thousand dollars on a methylation analysis. But if your vitamin D has been low for a decade and you haven’t supplemented it, the methylation panel isn’t the most useful conversation. Fixing the vitamin D is.

The Foundational 5 are the supplements with the strongest evidence base, the broadest physiologic reach, and the highest “you-probably-need-this-and-the-data-agrees” hit rate. They’re not the most exciting tools in the cabinet. They’re the ones we lean on the hardest because they work — and because they’re what makes the rest of the protocol responsive when we add it on top.

Get the foundation right. Then build.

The Foundational 5

1. A High-Quality Multivitamin

The American diet is calorie-rich and nutrient-poor. A well-formulated multivitamin doesn’t replace whole foods, but it covers the gaps that even careful eaters develop — and a good one is really a multimineral too. The minerals matter every bit as much as the vitamins.

Here’s what most people miss: vitamins and minerals aren’t just little helpers that nudge a reaction along here and there. They’re the raw materials your body runs on — the building blocks behind steady blood sugar, balanced mood and behavior, healthy hormone and testosterone production, and the energy your cells make every second of the day. It helps to think of them less like a supplement and more like the parts on the shelf at a construction site: you can have the best blueprint and the best crew in the world, but if the right parts aren’t there — in the right form and the right amount — the work stalls. Every system needs enough of the proper forms to run the way it should.

The nutrients we see running low most often at Aervita are zinc, folate, and B12. Getting the active forms of these back where they belong is often one of the first things that lifts energy, steadies mood, sharpens immune function, and supports long-term brain and heart health.¹

The evidence has caught up, too. The COSMOS-Mind trial published in Alzheimer’s & Dementia in 2023 found that a daily multivitamin slowed cognitive aging in older adults by an estimated 60% over three years.²

The catch is quality — and form. Bargain-bin products use cheap, poorly absorbed versions (cyanocobalamin instead of methylcobalamin for B12, folic acid instead of methylfolate, and oxide forms of minerals the body barely absorbs). We carry professional-grade formulations because the difference is measurable in the blood work.

2. Omega-3 Fatty Acids (EPA + DHA)

If we could pick only one supplement to give every patient on the planet, this would be the strongest candidate.

We see significant omega-3 deficiency in the majority of patients who come through Aervita, regardless of how clean the diet looks on paper.

Cardiovascular disease remains the number one cause of death in the United States by a wide margin³, and omega-3 status is one of the few modifiable risk factors with strong, consistent evidence behind it. The REDUCE-IT trial published in NEJM in 2019 showed a 25% reduction in major cardiovascular events with prescription-grade EPA in high-risk patients.⁴ More recent meta-analyses confirm benefits for triglyceride lowering and inflammatory markers across the spectrum of patients, not just the highest-risk groups.⁵

Dosing matters. Most over-the-counter products contain a fraction of the EPA/DHA they advertise. We dose by combined EPA + DHA per capsule, not by “fish oil” total — and we test omega-3 index on patients who don’t respond.

3. Vitamin D3 + K2

This is the supplement we suspect provides the highest return on investment of anything on this list.

Vitamin D is involved in over a thousand distinct biological processes — gene expression, immune regulation, bone metabolism, calcium handling, mood, cardiovascular health.⁶ In fact, calling it a “vitamin” is technically misleading: vitamin D acts more like a hormone than a nutrient. The active form (calcitriol) is a secosteroid that binds to vitamin D receptors throughout nearly every tissue in the body.

Vitamin D deficiency remains startlingly common in the United States, and especially common here in Minnesota, where the sun angle from October through April makes it nearly impossible to synthesize enough through skin alone. We routinely see new patients arrive with serum 25(OH)D levels below 25 ng/mL — well below the 50-80 ng/mL range that most functional medicine practitioners consider optimal.

We also see a striking pattern across the practice: when a patient’s inflammatory markers are high, vitamin D is almost always severely low. The relationship runs in both directions — chronic inflammation depletes vitamin D, and low vitamin D allows inflammation to escalate. Correcting it is often the first thing that breaks the cycle.

A landmark 2017 meta-analysis in BMJ found a 12% reduction in acute respiratory infections in people supplemented with vitamin D, with the strongest effect in those with the lowest baseline levels.⁷ Additional research has connected adequate vitamin D status with improved bone density, immune regulation, and lower autoimmune disease risk.⁸

We pair vitamin D with vitamin K2 (specifically MK-7) because the two work together to direct calcium into bone instead of soft tissue and arterial walls. Vitamin D without K2 isn’t wrong, but the combination is more physiologic.

4. Fruits & Greens (Daily Produce Concentrate)

Most American adults don’t come close to the daily produce intake the data actually supports. The “five fruits and vegetables a day” recommendation has held up under decades of research, and more recent meta-analyses suggest the real benefit shows up at seven to ten servings per day, especially when polyphenols, fiber, and micronutrient diversity are factored in.⁹

The problem isn’t motivation. It’s logistics. Eating that much produce, every day, is a job. So we lean on a high-quality fruits-and-greens powder to fill the gap.

A good blend gives you a concentrated source of whole-food vitamins and minerals, polyphenols and antioxidants from a wide spectrum of plants, prebiotic fiber that feeds the gut microbiome, and phytonutrients that aren’t available in a multivitamin. It’s one of the simplest “minimum effective dose” interventions in functional medicine — mix a scoop into water once a day, cover most of what the produce aisle would have given you if you’d eaten it, and move on.

Quality matters here as much as anywhere else. Bargain-store greens powders often use heat-processed extracts, fillers, or sweeteners that defeat the purpose. We carry formulations where the source plants are minimally processed and the formula is dense rather than padded.

5. A Targeted Probiotic

The gut microbiome shapes immunity, mood, hormone metabolism, and metabolism itself. It’s where chronic inflammation often starts and where it can be quieted. A well-chosen probiotic isn’t a magic bullet — but used alongside the right diet, prebiotic fiber, and elimination of disruptors, it’s a foundational lever.

The right probiotic depends on the patient. Saccharomyces boulardii for someone recovering from antibiotics or with persistent GI inflammation. A multi-strain Lactobacillus + Bifidobacterium product for general immune and bowel support. A spore-based formula for patients with histamine sensitivity or SIBO who don’t tolerate traditional probiotics.

One strain we look for specifically on comprehensive stool testing is Akkermansia muciniphila — a keystone species that lives in the protective mucus layer of the intestine and helps maintain gut barrier integrity. Low Akkermansia is associated with metabolic dysfunction, obesity, and intestinal permeability (“leaky gut”).¹⁰ When stool testing shows it depleted, we may recommend a targeted Akkermansia supplement to help re-establish the colony.

We pick the strain to match the patient — not the other way around.

What’s Not on the List (And Why)

People often ask why creatine, CoQ10, magnesium, B-complex, NAD+ precursors, glutathione, or one of two dozen other excellent supplements aren’t on the foundational list.

Most of them are excellent. We use them constantly. But we use them strategically — based on labs, symptoms, age, and goals — not foundationally for everyone. The Foundational 5 earn their spot because they have the broadest applicability across the broadest patient population. Get these right, and most patients feel something within 30-60 days.

The Quality Question Most People Get Wrong

The biggest reason supplements don’t work isn’t that the patient picked the wrong one. It’s that the patient picked the right one in the wrong form, at the wrong dose, from a manufacturer that didn’t actually verify what was in the bottle.

This is why we carry professional-grade brands like NutriDyn — products that are third-party verified, use the bioavailable forms of each nutrient, and dose at clinical levels. The price difference between a discount-store multivitamin and a NutriDyn multivitamin is real. So is the bioavailability difference. So is the result.

Aervita’s Foundational 5 from NutriDyn

If you’d like the exact products we reach for most often:

Multivitamin — Essential Multi
Omega-3 — Omega Pure EPA-DHA 720
Vitamin D3 + K2 — D3 5000 with K2
Fruits & Greens — NutriDyn Fruits & Greens
Probiotic — UltraBiotic Daily Multi-Strain

A breath of life is built on the boring stuff. Here’s how we get the boring stuff right.

References

Smith AD, Refsum H. Homocysteine, B Vitamins, and Cognitive Impairment. Annual Review of Nutrition. 2016;36:211-239.
Baker LD, Manson JE, Rapp SR, et al. Effects of cocoa extract and a multivitamin on cognitive function: A randomized clinical trial. Alzheimer’s & Dementia. 2023;19(4):1308-1319.
Centers for Disease Control and Prevention. National Center for Health Statistics. Leading Causes of Death. Accessed 2024.
Bhatt DL, Steg PG, Miller M, et al. Cardiovascular Risk Reduction with Icosapent Ethyl for Hypertriglyceridemia. New England Journal of Medicine. 2019;380:11-22.
Bernasconi AA, Wiest MM, Lavie CJ, et al. Effect of Omega-3 Dosage on Cardiovascular Outcomes: An Updated Meta-Analysis. Mayo Clinic Proceedings. 2021;96(2):304-313.
Bouillon R, Marcocci C, Carmeliet G, et al. Skeletal and Extraskeletal Actions of Vitamin D: Current Evidence and Outstanding Questions. Endocrine Reviews. 2019;40(4):1109-1151.
Martineau AR, Jolliffe DA, Hooper RL, et al. Vitamin D supplementation to prevent acute respiratory tract infections: systematic review and meta-analysis of individual participant data. BMJ. 2017;356:i6583.
Hahn J, Cook NR, Alexander EK, et al. Vitamin D and marine omega 3 fatty acid supplementation and incident autoimmune disease: VITAL randomized controlled trial. BMJ. 2022;376:e066452.
Aune D, Giovannucci E, Boffetta P, et al. Fruit and vegetable intake and the risk of cardiovascular disease, total cancer and all-cause mortality—a systematic review and dose-response meta-analysis of prospective studies. International Journal of Epidemiology. 2017;46(3):1029-1056.
Cani PD, Depommier C, Derrien M, et al. Akkermansia muciniphila: paradigm for next-generation beneficial microorganisms. Nature Reviews Gastroenterology & Hepatology. 2022;19:625-637.

The Foundational 5: The Five Supplements We Recommend Most