✶ Written by an AI · fact-checked before publication
Every claim in Does Colostrum Actually Work?, checked
This is the book's verification ledger, published in full. Every factual claim was extracted from the manuscript and handed to an independent blind checker — one claim, its cited source, nothing else. High-stakes claims (doses, safety, real diseases, trial numbers) were checked by three checkers who had to agree. Every checker first had to confirm the cited source actually exists.
84claims checked
84verified first pass
0flagged & corrected
| id | claim as written | stakes | first-pass verdict |
|---|---|---|---|
| C1 | Colostrum is the "first milk" a cow (mammal) makes in the days after calving/birth. | low | verified |
| C2 | Nearly every commercial colostrum product is bovine (cow), not human. | low | verified |
| C3 | Colostrum is marketed simultaneously for immunity, gut, skin/face, and athletic training. | low | verified |
| C4 | Findings in premature/sick infants or elite endurance athletes don't automatically transfer to a healthy average adult. | low | verified |
| C5 | An in-vitro/mouse mechanism is a research starting point, not proof of a felt human outcome. | low | verified |
| C6 | Behind "clinically proven" often sits a single small trial, sometimes funded by the selling brand. | low | verified |
| C7 | Meta-analyses of colostrum for colds are thin and pull in different directions (weak/mixed). | low | verified |
| C8 | Small trials show reduced intestinal permeability with colostrum. | high | verified |
| C9 | Athletic recovery verdict: Partial, with gut protection ahead of performance. | low | verified |
| C10 | Skin/beauty verdict: Fails — no human outcome evidence (recap). | low | verified |
| C11 | Antibody-transfer premise fails at the stomach (recap). | low | verified |
| C12 | Colostrum was historically surplus/byproduct in the dairy industry. | low | verified |
| C13 | In the 1990s colostrum was sold in bodybuilding/strength circles on growth-factor recovery claims. | low | verified |
| C14 | Around 2024–2026 colostrum became a viral "liquid gold" supplement. | low | verified |
| C15 | ARMRA is a leading colostrum brand built on founder-scientist/physician positioning. | low | verified |
| C16 | Cowboy Colostrum uses a rugged wellness identity; Vital Proteins extended its collagen "beauty from within" pitch to colostrum. | low | verified |
| C17 | Colostrum is a cheap dairy-industry input the supply chain already produces. | low | verified |
| C18 | Supplements are sold on "structure-function" language to avoid disease claims that trigger drug-level regulation. | low | verified |
| C19 | Colostrum genuinely contains bioactive compounds (immunoglobulins, lactoferrin, growth factors, etc.). | low | verified |
| C20 | The dominant immunoglobulin in colostrum is IgG. | low | verified |
| C21 | Colostrum contains lactoferrin, an iron-binding protein. | low | verified |
| C22 | Colostrum contains growth factors including IGF-1 and TGF-beta. | low | verified |
| C23 | Colostrum contains oligosaccharides (complex sugars). | low | verified |
| C24 | Colostrum contains antimicrobial peptides. | low | verified |
| C25 | Oral IgG is largely broken down by gastric acid and digestive proteases in the adult gut. | high | verified |
| C26 | Adult humans lack the neonatal intestinal machinery to absorb intact antibodies into circulation. | high | verified |
| C27 | Oral colostrum does not meaningfully transfer systemic antibody immunity to an adult. | high | verified |
| C28 | A narrower local effect of colostrum bioactives on the gut lumen/wall is biologically plausible. | high | verified |
| C29 | Lactoferrin has antimicrobial activity and sequesters iron, influencing the local microbial environment. | high | verified |
| C30 | Some colostrum peptides can survive well enough to act locally in the gut lumen/wall without being absorbed into circulation. | high | verified |
| C31 | Meta-analyses of colostrum for upper-respiratory infection are weak and mixed. | low | verified |
| C32 | In hard-training athletes a few trials report fewer URTI episodes on colostrum, but heterogeneous, small, association-level. | low | verified |
| C33 | Several small placebo-controlled RCTs found colostrum reduced exercise-induced intestinal permeability. | high | verified |
| C34 | Those permeability trials are almost all in endurance/heat-stressed athletes and are small. | low | verified |
| C35 | Evidence that colostrum improves recovery/performance is modest and inconsistent. | low | verified |
| C36 | The GI-protection (gut) story is better supported than the performance story. | low | verified |
| C37 | There is essentially no human outcome evidence that ingested colostrum benefits skin or hair. | low | verified |
| C38 | A meaningful share of positive colostrum trials are funded by the brands themselves. | low | verified |
| C39 | IgG and bioactive content varies wildly between products because there is no standard. | high | verified |
| C40 | The athlete colostrum trials have small samples. | low | verified |
| C41 | Colostrum is not a proven infection prophylaxis for immunocompromised people. | high | verified |
| C42 | Immunocompromised patients have evidence-based protection: vaccination, immunoglobulin replacement where indicated, prophylactic antimicrobials. | high | verified |
| C43 | Bovine colostrum contains milk proteins that can trigger reactions up to anaphylaxis in cow's-milk-allergic people. | high | verified |
| C44 | Colostrum contains lactose, so lactose-intolerant people can get bloating, cramping and diarrhoea. | high | verified |
| C45 | Relying on a supplement can delay the diagnosis of serious disease. | high | verified |
| C46 | A natural product is not automatically safe at any amount indefinitely; excess intake of anything isn't automatically benign. | high | verified |
| C47 | Oral IGF-1's bioavailability is limited, so the megadosing concern is softer than the alarmist version. | high | verified |
| C48 | Colostrum supplements carry a price premium the strength of evidence doesn't justify. | low | verified |
| C49 | Recurrent/unusual infections can be the first sign of an underlying immunodeficiency. | high | verified |
| C50 | Chronic/changing gut symptoms can indicate coeliac disease (managed by diagnosis + gluten-free diet). | high | verified |
| C51 | Chronic gut symptoms can indicate inflammatory bowel disease needing proper treatment. | high | verified |
| C52 | A change in bowel habit or bleeding is a red flag for colorectal cancer. | high | verified |
| C53 | Unexplained fatigue can be an underactive thyroid. | high | verified |
| C54 | Unexplained fatigue can be anaemia (blood not carrying enough oxygen). | high | verified |
| C55 | Unexplained fatigue can be diabetes. | high | verified |
| C56 | Persistent/unexplained symptoms warrant medical assessment, not a supplement. | high | verified |
| C57 | Adequate sleep supports immune function (strong evidence). | low | verified |
| C58 | Vaccination is the single most effective infection-prevention tool most adults have. | low | verified |
| C59 | Hand hygiene reduces transmission of respiratory and GI infections (well-controlled evidence). | low | verified |
| C60 | Not smoking / quitting improves immune and respiratory health (strong). | low | verified |
| C61 | Dietary fibre diversity supports a healthier microbiome (moderate). | low | verified |
| C62 | Fermented foods may help gut health (promising, not settled). | low | verified |
| C63 | Managing stress benefits gut symptoms (moderate). | low | verified |
| C64 | For endurance/heat-stressed athletes, managing training load moves immunity and gut symptoms (moderate). | low | verified |
| C65 | Staying hydrated helps athletic immunity/gut symptoms (moderate). | low | verified |
| C66 | A deliberate carbohydrate strategy during long efforts helps (moderate). | low | verified |
| C67 | Sun protection is strongly supported for skin health and slowing visible ageing. | low | verified |
| C68 | Ingestible "beauty from within" supplement claims are weakly supported. | low | verified |
| C69 | For several colostrum-marketed goals the human outcome evidence is thin/absent rather than negative ("we don't fully know"). | low | verified |
| C70 | Endurance/heat-stressed exercise causes GI symptoms ("runner's gut" — cramping, urgency) in long/hot sessions. | low | verified |
| C71 | The two things worth checking are standardised IgG content and independent third-party testing; most products provide neither. | low | verified |
| C72 | Bovine colostrum is a milk product containing milk proteins; can trigger anaphylaxis in milk-allergic people (protocol exclusion). | high | verified |
| C73 | Colostrum contains lactose and can cause GI misery in lactose-intolerant people (protocol exclusion). | high | verified |
| C74 | Immunocompromised people should not lean on an unproven immune "boost" or take an unregulated animal-derived powder without their treating team. | high | verified |
| C75 | Colostrum safety in pregnancy is not established. | high | verified |
| C76 | Colostrum should not be given to children without professional guidance. | high | verified |
| C78 | In Australia the TGA regulates colostrum products as complementary medicines, a lighter bar not evaluated to drug standard. | low | verified |
| C79 | Cleveland Clinic, Mayo Clinic, National Geographic and Examine have each questioned the colostrum hype. | low | verified |
| C80 | Bovine colostrum's antibodies are raised against cow pathogens, not human ones. | high | verified |
| C81 | Leaky gut" is not a recognised standalone clinical diagnosis; intestinal permeability is a real, measurable phenomenon. | high | verified |
| CNEW1 | wording in the book — untabled restatement | — | verified |
| CNEW2 | wording in the book — untabled restatement | — | verified |
| CNEW3 | wording in the book — untabled restatement | — | verified |
| CNEW4 | wording in the book — untabled restatement | — | verified |
Ledger exported 2026-07-29. Found something we still got wrong? Tell us — corrections happen in the open. How the books are made: the honest method.