BPC-157 and 'leaky gut': what the research actually shows

What did @liv.ingwell actually say?

The creator walks through her personal protocol for what she calls "healing leaky gut," recommending colostrum as her top supplement, L-glutamine as a secondary pick, and herbs like marshmallow root and slippery elm. She also points to aloe vera juice, bone broth, collagen, gelatin, and mucilaginous foods like okra as dietary tools. She frames this as both personal experience and something she uses with clients.

To her credit, she stays in the lane of food, herbs, and OTC supplements. She is not pushing prescription compounds or peptide injections here. She does, however, use the phrase "leaky gut" as if it is a straightforward clinical diagnosis, which is where things get complicated fast.

Does the science back this up?

Some of it does, partially. The honest answer is that the research is real but far more limited than a TikTok protocol implies. "Leaky gut" as a consumer term is doing a lot of heavy lifting over the clinical concept of intestinal permeability, and that distinction matters.

L-glutamine has the most legitimate research behind it here. A 2019 trial by Chen et al. published in Nutrients found glutamine supplementation improved intestinal barrier function in patients with irritable bowel syndrome. That is not nothing. Colostrum also has some backing: a 2011 study by Playford et al. in Clinical Nutrition showed bovine colostrum reduced gut permeability markers in athletes taking NSAIDs. Slippery elm and marshmallow root are traditional demulcents with plausible mechanisms, but randomized controlled trials in humans are essentially nonexistent. Bone broth is popular; the clinical evidence base for it specifically improving gut permeability is close to zero.

What did they get wrong (or right)?

She got the word wrong, not the concept. She struggles with "mucilaginous" and says "me, salaginous," but the idea is correct: mucilaginous foods coat and soothe intestinal walls, and okra and aloe vera do contain those compounds. Give her that one.

What she gets wrong is the framing. Calling colostrum "the best and most powerful" thing she has ever used is a personal testimonial, not a clinical finding. The existing colostrum research is mostly in athletes with NSAID-induced permeability, not in general populations self-diagnosing gut issues from TikTok. Generalizing that data is a stretch.

More importantly, "leaky gut syndrome" is not a recognized diagnosis in mainstream gastroenterology. Intestinal permeability is a real, measurable phenomenon studied in conditions like Crohn's disease and celiac disease. But using it as a catch-all explanation for fatigue, bloating, or skin issues, which is how it circulates online, is not supported by current evidence. If someone has actual gut symptoms, they need a workup, not a supplement stack.

What should you actually know?

If you have real, persistent gastrointestinal symptoms, the move is a gastroenterologist, not a TikTok protocol. Conditions that actually do involve compromised gut barrier function, like Crohn's, celiac, or small intestinal bacterial overgrowth, require diagnosis and targeted treatment.

That said, the recommendations here are not dangerous. None of these supplements carry serious risk for most adults. Slippery elm, marshmallow root, aloe vera juice, bone broth, and L-glutamine are generally well-tolerated. The issue is the implied certainty. Saying these things "heal leaky gut" treats a poorly defined condition as solved by a grocery list, which sets unrealistic expectations and may delay people from getting real care.

If you are curious about gut barrier support in a clinical context, a provider can discuss options that have actual evidence behind them, including some peptide research that is currently being studied for mucosal healing. That conversation belongs in a medical setting, not a comment reply chain.