Prebiotics, carbohydrates from plants and milk sold as supplements, feed selected gut bacteria. They make bowel movements somewhat more regular, lower blood sugar modestly where control is already impaired, slightly lower the cholesterol linked to artery plaque and add a little weight loss. Gas and bloating are common and usually mild. No study has shown they lengthen human life. They look like a low-cost, low-risk addition with modest, uncertain effects. (Full Review)
| Marker | Target | Why |
|---|---|---|
| HbA1c | 4.0–5.6% (standard reference range) | Falls in prediabetes and diabetes |
| Fasting glucose | 70–99 mg/dL (standard reference range) | Safety check on glucose-lowering drugs |
| LDL cholesterol | No established target; track change from own baseline | Small reduction reported |
| hs-CRP | No established target; track change from own baseline | Unvalidated as a treatment surrogate |
| ALT | 7–56 U/L (standard reference range) | Safety check in existing liver disease |
| Stool Bifidobacterium (microbiome test) | No established target; track change from own baseline | Confirms a prebiotic response |
| Body weight | Not specified in the ER | Reference point for judging change |
| Waist circumference | Not specified in the ER | Reference point for judging change |
Cadence: Baseline before starting; symptom check 1–2 weeks after each dose increase; repeat blood tests at 3 months, then every 6–12 months while use continues