This week: does a $60 scoop of colostrum rebuild your gut? Plus fish oil, borax, lion's mane, and D3+K2 — real or noise.

The pitch is vague (“heart health!”); the real effect is specific. At about 4 grams a day of EPA/DHA, omega-3s cut triglycerides by roughly 20–30% — enough that the American Heart Association issued a formal advisory on it (2019 AHA science advisory). Two honest caveats: that's a triglyceride effect, not a promise that a daily capsule prevents heart attacks, and the AHA studied prescription-grade oil — over-the-counter fish oil isn't pre-checked for what's actually in it, so a third-party mark (USP, NSF, IFOS) is how you tell. Real, specific, and dose-dependent.

This one isn't a supplement debate — it's a safety notice. Borax is a household cleaning chemical, and there is no human evidence it treats arthritis or inflammation. Swallowed, it's toxic: poison-control experts flag nausea, vomiting, kidney strain, and seizures at higher intakes (Poison Control). A viral video is not a dosing guide. The claim fails on evidence and the “protocol” fails on safety.

There's a real research thread here — lion's mane is genuinely being studied for cognition, and a few small trials hint at modest, short-term perks. But the human evidence is thin: tiny groups, short runs, mixed results, and some tests where it did nothing at all (ADDF Cognitive Vitality review). A promising maybe in a lab is a long way from a mushroom latte that clears a foggy Tuesday. Interesting, unproven, and oversold.

The combo-bottle pitch says D3 moves calcium and K2 aims it at your bones, so together they build a stronger skeleton. Vitamin K can nudge a bone-density marker in some trials, but when researchers look at what actually matters — broken bones — the fracture evidence is inconsistent, and there's no good support for a healthy person adding K2 to their D3 to build stronger bones (2022 fracture meta-analysis). A tidy mechanism story sold ahead of the outcome data.

Start with what's true, because colostrum isn't pixie dust. It's the first milk a cow makes, genuinely loaded with antibodies and growth factors — and it has real research behind it. Pooled across ten randomized trials, bovine colostrum measurably tightened a “leaky” gut, lowering the permeability markers scientists actually track (2024 meta-analysis of 10 RCTs). So the mechanism isn't the lie. The dose is.

Here's the step the label walks past. Those gut-barrier trials didn't stir a scoop into a latte — they used colostrum by the tens of grams a day. One classic study ran 60 grams daily to blunt the gut damage from anti-inflammatory painkillers (Playford, 2001). An ARMRA scoop is one gram, and even the brand's own “take four-plus a day for maximal benefit” lands around four (ARMRA's own serving page). The research lives at roughly ten to sixty times what's in the cup.

The immune half of the promise is softer still. Those trials are small, mixed, and mostly run in athletes, hospital patients, or kids under real physical stress — not the well person stirring powder into coffee for “armor” (2023 URTI trial). Grade the promise exactly as it's sold — a $60 tub telling a healthy shopper it'll rebuild their gut lining and bulletproof their immune system — and it's charging serum money for research it never hands you the dose of.

At study-grade doses — think tens of grams a day, not a scoop — bovine colostrum can modestly reduce the short-term “leakiness” that hard endurance exercise or anti-inflammatory drugs punch into the gut lining. That effect is real, reversible, and dose-dependent, and it shows up in stressed guts, not as everyday “immune armor” for someone who feels fine. It's the narrow, honest use the tub's one-gram serving quietly skips past.

Started early and dosed high enough as a lozenge, zinc may trim a cold by up to a couple of days — though Cochrane calls the evidence shaky and notes it does nothing to stop you catching one (2024 Cochrane review). It's a supplement, so contents vary bottle to bottle — a third-party mark (USP, NSF) is the only way to know what you're getting. Timing and form beat faith; skip the nasal sprays.

For a specific few situations — preventing an antibiotic-linked infection, certain infant and IBD cases — probiotics earn their place. For a healthy person buying them for general “gut health,” the gastroenterologists' own guideline says the evidence just isn't there, and what's in the capsule can vary batch to batch (AGA guideline). Rarely harmful, usually just an expensive habit.

This week's gold medal in marketing physics goes to the colostrum brand promising you the “same immune antibodies a newborn calf gets on day one.” Two small problems: you aren't a calf, and cow antibodies get digested into spare amino-acid parts in your stomach long before they “armor” anything. It's a gorgeous pitch for a superpower your own digestion cancels on the way down. Ten out of ten calves agree.

One line for your back pocket: “clinically studied” and “clinically dosed” are not the same sentence. The aisle's favorite move is to run the research at a heroic dose, sell you a fraction of it, and keep the headline. Before you trust the scoop, ask what the study actually poured in.

One claim. One verdict. Two minutes.

Wednesday: are Ozempic dosing mistakes really flooding poison control? We put the scary headline on the scale — the real number of calls, and exactly where the coverage overshoots. Hit reply and tell me what's flooding your timeline; it might be the one we grade next.

Be honest — is there a tub of colostrum (or a colostrum creamer) in your kitchen right now?