Synbiotics

Overview

A synbiotic is a combination of a probiotic (live beneficial microorganism) and a prebiotic (substrate that selectively feeds beneficial microbes), designed to work synergistically — the prebiotic supports the survival and colonization of the probiotic organism. Synbiotics represent a more ecologically sophisticated intervention than either component alone (Karen's Brain Primitive 5: two-sided ecological engineering).

The ISAPP 2019 definition distinguishes:

  • Complementary synbiotic: Probiotic + prebiotic chosen independently for their individual benefits.
  • Synergistic synbiotic: Prebiotic specifically selected to enhance survival/function of the co-administered probiotic.

Clinical Evidence

  • ASD: Synbiotic improved GI symptoms, behavior, and anxiety; restored dialister abundance [1].
  • Schizophrenia: Synbiotic improved metabolic syndrome parameters in schizophrenia RCT [2].
  • Hypothyroidism: Synbiotic improved thyroid function alongside levothyroxine [3].
  • Breast cancer: Synbiotic during chemotherapy supported immune function [4].
  • Crohn's disease: Synbiotic (B. longum + inulin-FOS) improved clinical and histological outcomes in RCT [5].
  • Pancreatic cancer: Perioperative synbiotic improved immunomodulation post-resection [6].

Cross-References

References (6)

  1. Leanne K. Mitchell, Helen S. Heussler, Christopher J. Burgess et al. (2024). Mitchell 2024 — Gastrointestinal, Behaviour and Anxiety Outcomes in Autistic Children Following Synbiotics vs Gut-Directed Hypnotherapy. Journal of Autism and Developmental Disorders. doi:10.1007/s10803-024-06588-9
  2. Basafa-Roodi P, Jazayeri S, Hadi F et al. (2024). Effects of Synbiotic Supplementation on the Components of Metabolic Syndrome in Patients with Schizophrenia: A Randomized, Double-Blind, Placebo-Controlled Trial. BMC Psychiatry. doi:10.1186/s12888-024-06061-y
  3. Ramezani M, Reisian M, Sajadi Hezaveh Z (2023). The Effect of Synbiotic Supplementation on Hypothyroidism: A Randomized Double-Blind Placebo Controlled Clinical Trial. PLoS ONE. doi:10.1371/journal.pone.0277213
  4. Khazaei Y, Basi A, Fernandez ML et al. (2023). The effects of synbiotics supplementation on reducing chemotherapy-induced side effects in women with breast cancer. BMC Complementary Medicine and Therapies. doi:10.1186/s12906-023-04165-8
  5. Steed H, Macfarlane GT, Blackett KL et al. (2010). Clinical Trial: The Microbiological and Immunological Effects of Synbiotic Consumption - A Randomised Double-Blind Placebo-Controlled Study in Active Crohn's Disease. Alimentary Pharmacology & Therapeutics. doi:10.1111/j.1365-2036.2010.04472.x
  6. Sara Maher, Hesham A. Elmeligy, Tarek Aboushousha et al. (2024). Synergistic immunomodulatory effect of synbiotics pre- and postoperative resection of pancreatic ductal adenocarcinoma: a randomized controlled study. Cancer Immunology, Immunotherapy. doi:10.1007/s00262-024-03686-6

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