Where to begin rebuilding the gut and calming the immune system — the foundation, before a single supplement.
Recovery does not begin with what you add. It begins with what you remove.
Most approaches get this backwards — a probiotic placed on top of a diet and an environment that are still driving inflammation. The body never gets the quiet it needs to change.
The science is settled on one point: the gut microbiome is adaptable. It responds at any age. Studies show a measurable shift in microbiome composition within fourteen days of removing added sugar, and a measurable drop in inflammatory markers within one week of removing ultra-processed food.
Fourteen days is not a cure. It is a beginning — long enough for the body to demonstrate that it can change. That demonstration is what makes the rest possible.
Remove first. Then rebuild. The body knows how to heal — it has been waiting for the right conditions.
Days 1–14. These three removals do more than any supplement layered on top of them.
Every gram. The obvious sources and the hidden ones — sauces, cereals, flavoured yoghurts. Sugar suppresses immune-cell activity for hours after eating and feeds the bacteria that drive inflammation. Fourteen days clear is enough to begin shifting the balance.
If the ingredient list is long and unfamiliar, it goes. Packaged snacks, ready meals, anything engineered. One week without ultra-processed food produces a measurable drop in inflammatory markers.
Even small amounts directly weaken the gut barrier. For fourteen days, none — one of the clearest changes in its effect.
Sugar & immune suppression: Sanchez 1973. Ultra-processed food & inflammatory markers (CRP, IL-6): Monteiro 2019.
Begin gently within the fourteen days. The removals lead; these support what they start.
Inulin (chicory, garlic, onion, leek), FOS (banana, asparagus, artichoke), resistant starch (cooled cooked rice, cooled potatoes). At least one, every day. Probiotics cannot establish without them.
L-glutamine to nourish the cells lining the gut. Zinc from pumpkin seeds, oysters, small amounts of red meat. Omega-3 from sardines, mackerel, herring — food first. Bone broth for collagen, glycine and proline.
Lactobacillus rhamnosus GG, the most studied strain for allergy. Bifidobacterium longum, to restore immune balance. Pharmaceutical grade. Refrigerated. Minimum 10 billion CFU.
L. rhamnosus GG & eczema reduction: Kalliomäki 2001, Lancet. Breastfeeding & inflammatory disease: Victora 2016, Lancet.
This guide is a beginning, not a cure — the proof, in your own body, that change is possible.
If fourteen days brings even one clear morning, hold onto it. That single morning is the evidence that the way out exists.
Get the full field guide as a PDF — keep it, print it, follow it.
No spam. One guide, and the occasional letter from TBNG.