Restore Your Microbiome with Precision Fermentation

The Maternal Restoration Strategy

Rather than just giving the baby a probiotic directly, go a step further: restore B. infantis to the pregnant mother who then transfers it naturally to her baby via the birth canal and breastfeeding. A species provided by this route is more likely to persist in the company of other healthy microbes.

Make yogurt with a single Evivo sachet (8 billion CFU). Our prolonged fermentation method yields 300 billion CFU at 36 hours — far greater than the commercial product. Mom consumes the yogurt; she never feeds the fermented product to the baby directly. She only needs to purchase Evivo once — each subsequent batch starts with 2 tablespoons from the prior batch.

Mom also benefits: reduced anxiety, improved immune response, anti-inflammatory effects, and improved intestinal barrier function that reduces bacterial endotoxemia.

B. infantis Yogurt Recipe

1 sachet Evivo B. infantis EVC001 (8 billion CFU)
1 tbsp raw potato starch (glucose polymer B. infantis degrades via amylopullulanase)
1 tsp sucrose (secondary carbon source)
1–2 tsp 2'-FL HMO (e.g., Layer Origin PureHMO) — this is the one ferment where HMO belongs in the jar; B. infantis ferments HMO as both carbon and nitrogen source
250mg NAC (N-Acetyl Cysteine) — cysteine source + oxygen scavenger for this obligate anaerobe
1 tbsp whey protein hydrolysate (WPH) — pre-digested peptide nitrogen source for all ferments
40g collagen peptides — dissolved with WPH before inoculation
2 tsp xylitol — sweetener + helps suspend potato starch
1 quart organic half-and-half (no gums, emulsifiers, or thickeners)

Combine sachet contents + potato starch + sucrose + HMO + 2 tbsp half-and-half in a bowl. Stir until mixed. Pour in remainder of half-and-half and mix thoroughly. Cover and maintain at 100°F for 30–36 hours. Consume ½ cup per day.

With Bifidobacteria, avoid inulin as the prebiotic fiber — B. infantis cannot metabolize it. Use potato starch, sucrose, and HMO instead. HMO is inert in all Lactobacillus jars — only add it to this B. infantis ferment.

HMOs — Beyond Infant Nutrition

Human milk oligosaccharides aren't just baby food. In adults, HMOs act as pathogen decoys — binding to cell walls of E. coli, Campylobacter jejuni, Entamoeba histolytica, and H. pylori, impairing their ability to cause inflammation, diarrhea, and stomach ulcers. HMO supplementation produces marked increases in intestinal butyrate (nourishes/heals intestinal lining, reduces blood sugar, reduces insulin resistance, lowers blood pressure, improves mood and sleep) and causes a significant reduction in Proteobacteria — the species of dysbiosis and SIBO.

The first human clinical trial of adult HMO supplementation (2'-fucosyllactose + lacto-N-neotetraose) showed tolerance up to 20 grams/day with marked increases in beneficial Bifidobacteria. For formula-fed infants, adding HMOs to synthetic formula partially compensates for breast milk's absence — improving sleep, reducing colic, and reducing respiratory infections. Formula industry quantities are not disclosed.

Foundational Microbiome Yogurt — Updated 2025

Davis estimates SIBO has affected over half the US population due to antibiotic overuse, processed food preservatives, and emulsifying agents. He notes he regrets calling this "SIBO yogurt" — it's really a collection of keystone/foundational microbes that rebuilds a healthy GI microbiome, not just a SIBO treatment.

The updated protocol replaces B. coagulans (unreliable in dairy — rarely >10B CFU) with B. subtilis HU58, which produces 7 bacteriocins, surfactin for biofilm disruption, and has never failed in fermentation. Co-ferment L. reuteri + L. gasseri at 100°F for 36 hours. Ferment B. subtilis HU58 separately at 90–95°F for 24 hours. Consume ½ cup of each daily for 4 weeks.

Pregnancy Priority Protocol

For pregnancy, use the mixed-culture L. reuteri yogurt (lower bacterial counts avoid high oxytocin). Combine L. reuteri with store-bought yogurt or other species at 106°F. Begin with L. crispatus after OB clearance — vaginal dominance is the primary goal. All probiotic use during pregnancy requires physician clearance.

Six Strategies for Reversing Insulin Resistance

Each component makes its own contribution. Together, Davis calls it the "two plus two equals eleven" synergistic effect:

1. Eliminate wheat & grains — removes amylopectin A (spikes blood sugar), gliadin opioid peptides (drive appetite), and wheat germ agglutinin (drives inflammation)
2. Normalize vitamin D — directly reverses insulin resistance; most people are deficient
3. Supplement magnesium — critical cofactor for insulin signaling; depleted in modern diets
4. Supplement omega-3 fatty acids — reduces inflammation that sustains insulin resistance
5. Optimize thyroid function — subclinical thyroid dysfunction worsens metabolic syndrome
6. Cultivate healthy bowel flora — this is where our fermentation protocol connects — restoring keystone species pulls back abnormal insulin levels

The Recommended Approach

Step 1. Consume Akkermansia-blooming foods daily — olive oil, inulin/FOS, garlic, onions, peppers, hyaluronic acid, blueberries, green tea.
Step 2. Restore keystone species with fermented foods — L. reuteri, L. gasseri, B. subtilis, and others from this protocol. A healthy, diverse microbiome supports Akkermansia indirectly.
Step 3. After a few months, run a stool analysis. All major testing platforms (Vibrant Wellness Gut Zoomer, GI-Map, Thryve) report Akkermansia levels, sometimes listed under its phylum name Verrucomicrobia.
Step 4. Only if completely absent on stool testing, consider a probiotic source such as Pendulum. Even then, dead (pasteurized) Akkermansia provides nearly identical metabolic benefits to live — but cannot take up residence. Live is preferred if colonization is the goal.

Week 1 Ramp-Up Protocol

If you are new to high-CFU fermented foods, do not start at full servings. Ramp up gradually to allow your gut to adjust:

Days 1–3: ¼ cup per strain per day — watch for GI response, bloating, cramping
Days 4–7: ⅓ cup per strain — increase if first days were tolerated
Days 8–10: ½ cup per strain — full serving, steady state

Die-Off Reactions Are Normal

The bacteriocins produced by L. reuteri, L. gasseri, and B. subtilis actively kill pathogenic species in your GI tract. When these pathogens die, they release endotoxins (bacterial breakdown products) into your system. This can cause temporary bloating, headache, fatigue, or brain fog — symptoms that feel like you're getting worse before getting better. This is expected and typically resolves within 3–7 days. If symptoms are severe, reduce serving size and ramp up more slowly. This is a sign the yogurt is working, not a reason to stop.

Equipment-to-Strain Mapping

Each strain needs its own temperature. Here is one way to organize your equipment:

Protein Fortification — What It Adds

When you add WPH (1 tbsp) + collagen peptides (40g) to a quart batch, each ½-cup serving delivers approximately 10–11g of protein — comparable to a Greek yogurt but with 200+ billion CFU of targeted probiotics. Pint batches with proportionally less additive yield ~8–10g per serving.

Three protein layers in every serving:
1. Fermentation-digested dairy protein — 36 hours of bacterial proteolysis partially pre-digests casein and whey
2. WPH (whey protein hydrolysate) — already broken down to di- and tripeptide fragments for rapid absorption
3. Collagen peptides — pre-hydrolyzed; supports skin, joints, and gut lining repair

Dissolve collagen and WPH into dairy at room temperature before adding bacterial inoculum. Do not add to hot dairy (denatures WPH). Do not add after fermentation (disrupts curd structure).

Critical Temperature Warning

L. reuteri dies at 109–110°F and higher. Most preset yogurt makers and older Instant Pots run at 108–114°F — this will kill your reuteri culture. Always test your device with a thermometer before committing a batch. For the updated SIBO yogurt, L. reuteri + L. gasseri co-ferment at 100°F; B. subtilis ferments separately at 90–100°F.