The Library

Long-form reading on immune education.

Evergreen articles on transfer factors, PhytoFactor™, and the science behind 4Life's most popular products. Free to read. No paywall.

New · Just Published
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9-min read · Published September 12, 2026

NK cells, B cells and T cells: immune cells 101

Three lymphocytes, one family tree, and the distinction that explains most of immunology: two of them are educated before deployment and one never is. Plus how the CD marker system names a cell, where immune memory actually lives, and which of these three the Max research never measured.

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The Founders
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9-min read · Published September 5, 2026

The story of David & Bianca Lisonbee: how 4Life started in 1998

A living room in Orem, a mortgaged house, a capsule machine, $254 in month one and eighteen months of losses. The documented founding story of 4Life Research — sourced, not embellished, with the edges of the public record marked.

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The Evidence
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9-min read · Published August 29, 2026

The three clinical studies behind Transfer Factor Max, in plain English

Yu 2024, Jensen 2026, Gardner 2026 — what each one actually measured, why only one of the three is peer-reviewed, how they fit together as a timescale arc, and the four things none of them establish.

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9-min read · Published August 26, 2026

How transfer factor peptides act as immune messengers

A messenger is judged by what it makes something else do. Why the molecular size of transfer factor — small enough to pass a dialysis membrane — is the strongest evidence about how it works, and exactly where the published record stops.

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The Wrong Verb
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9-min read · Published August 22, 2026

Immune "booster" vs. immune modulator: the real difference

Nobody actually wants a boosted immune system — sustained excess activity has names, and they're all diseases. Why "boost" is the wrong verb, what modulation really means, and what US law lets a supplement label say.

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The Two Arms
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8-min read · Published August 20, 2026

Cellular vs. humoral immunity: the two arms explained

One arm sends molecules, the other sends cells. The oldest division in immunology in plain language — plus the 2×2 that clears up the confusion, and which arm transfer factor was actually discovered in.

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The Second Source
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8-min read · Published August 15, 2026

OvoFactor®: transfer factor from hen egg yolk

A hen cannot nurse, so she seals the immune briefing inside the yolk before the shell forms. The biology behind 4Life's one patented transfer factor source — and why it is not an antibody product.

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The First Milk
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8-min read · Published August 12, 2026

Colostrum: the antibody-rich first milk — and what makes UltraFactor XF® different

Up to 150 g/L of IgG, and a window that shuts in 24 hours. What's actually in a cow's first milk, why transfer factor peptides live there, and what ultrafiltration takes out to reach them.

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PhytoFactor
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9-min read · Published June 22, 2026

What is PhytoFactor™? The plant-based transfer factor explained

The complete guide to the first plant-based source of transfer factor. Discovery, mechanism, the Brassica napus origin story, and the three products that now contain it.

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The Discovery
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9-min read · Published July 15, 2026

How 4Life Research discovered PhytoFactor™ in Brassica napus

For 75 years, transfer factor meant animals — blood, then colostrum, then egg yolk. The story of the assumption nobody tested, the field crop that broke it, and the 900 mg formula it produced.

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Science · The Front Line
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7-min read · Published July 29, 2026

Neutrophils and the innate immune system: what Jensen 2026 tells us

Meet the body's first responders — the most abundant white blood cell. How they fight, what activation means, and why Max's second clinical study (Jensen 2026) focused on them.

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Inside the Formula
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8-min read · Published August 5, 2026

How Super Greens delivers 300 mg of PhytoFactor™ in a stick pack

Seventeen superfoods, inulin fiber, and the only stated 300 mg dose of plant-based transfer factor in the catalog. How the formula is built — and the four things it isn't.

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Science · The Factory
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7-min read · Published July 25, 2026

What are immune stem cells, and why do they matter?

Inside the body's renewal crew. What stem-cell mobilization actually does, why Max's third clinical study (Gardner 2026) focused on it, and how it powers the fourth verb — Renew.

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Ingredient Guide
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8-min read · Published August 1, 2026

4Life Immune Tea ingredients: a botanical-by-botanical guide

Six certified organic botanicals, 35 mg of vitamin C, and one plant-based peptide no other tea on earth contains. What each ingredient is, and the job it does in the blend.

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Lifestyle · The Ritual
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7-min read · Published August 8, 2026

Building a daily PhytoFactor™ ritual: morning, midday, evening

Capsules at breakfast, a stick pack in the bag, a caffeine-free tea at night. How to weave Max, Super Greens, and Immune Tea into a routine you'll actually keep — backed by habit science.

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