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Critic Response

The objection

“Where's the human RCT on sardine fasting specifically? Without that, the whole protocol is speculation.”

Our headline response

Correct — no RCT of monthly 5-day sardine cycles exists. The protocol's case rests on the converging adjacent literatures (PSMF, ketogenic diets, intermittent fasting, omega-3 dosing), founder N=1 data, and member-cycle outcome tracking. We'd welcome the RCT and we say so publicly.

The headline above is our short, defensible answer — substantive on its own. The full rebuttal below — the data tables, the per-citation reasoning, the places where the critic has a real point and where the data clearly disagrees — is published to Inner Circle members.

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Sources cited

Public list — every source we lean on for the headline above.

  1. [1]Vertes V et al., 1977. Supplemented fasting as a large-scale outpatient program · JAMA. Tier 1 DOI
  2. [2]Bistrian BR, 1978. Clinical use of a protein-sparing modified fast · JAMA. Tier 1 DOI
  3. [3]Halberg N et al., 2005. Effect of intermittent fasting and refeeding on insulin action in healthy men · Journal of Applied Physiology. Tier 1 DOI
  4. [4]Westman EC et al., 2008. The effect of a low-carbohydrate, ketogenic diet versus a low-glycemic index diet on glycemic control in type 2 diabetes mellitus · Nutrition & Metabolism. Tier 1 DOI
  5. [5]Akinkuolie AO et al., 2011. Omega-3 polyunsaturated fatty acid and insulin sensitivity: a meta-analysis of randomized controlled trials · Clinical Nutrition. Tier 2 DOI
  6. [6]Brandhorst S et al., 2015. A Periodic Diet that Mimics Fasting Promotes Multi-System Regeneration, Enhanced Cognitive Performance, and Healthspan · Cell Metabolism. Tier 1 DOI
  7. [7]Sutton EF et al., 2018. Early Time-Restricted Feeding Improves Insulin Sensitivity, Blood Pressure, and Oxidative Stress Even without Weight Loss in Men with Prediabetes · Cell Metabolism. Tier 1 DOI
  8. [8]Hallberg SJ et al., 2018. Effectiveness and Safety of a Novel Care Model for the Management of Type 2 Diabetes at 1 Year: An Open-Label, Non-Randomized, Controlled Study · Diabetes Therapy. Tier 1 DOI
  9. [9]Bhatt DL et al., 2019. Cardiovascular Risk Reduction with Icosapent Ethyl for Hypertriglyceridemia · New England Journal of Medicine. Tier 1 DOI
  10. [10]Pfoh ER et al., 2020. The Effect of Starting the Protein-Sparing Modified Fast on Weight Change over 5 years · Journal of General Internal Medicine. Tier 1 DOI
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