#605: Fasting, Nutrient Timing & CGMs: Interpreting the Evidence – Prof. James Betts

#605: Fasting, Nutrient Timing & CGMs: Interpreting the Evidence – Prof. James Betts

From Sigma Nutrition Radio by Danny Lennon

May 12, 2026 · 56 min

About this episode

Professor James Betts discusses the evidence surrounding fasting, nutrient timing, and continuous glucose monitoring, emphasizing the importance of proper interpretation of research findings.

Fasting, nutrient timing, chrono-nutrition, and continuous glucose monitoring are all topics that have generated substantial interest, but they are also areas where exaggerated claims can easily outpace the underlying evidence. In many cases, tentative hypotheses are presented as if they were already well-established conclusions, despite the fact that the research base is often more mixed and context-dependent than popular narratives imply. It is one thing for an idea to appear biologically coherent. It is another for that idea to translate into meaningful, reliable effects in real-world interventions. In this episode, Professor James Betts discusses how to think clearly about these topics, why common errors in interpretation can lead to overstated conclusions, and what is required to properly evaluate whether an observed effect reflects a true intervention effect rather than baseline differences, inappropriate comparisons, within-group changes, or mechanistic signals being mistaken for meaningful health outcomes. Timestamps: [04:24] Background into Prof. Betts' research [07:28] Evidence in fasting research over past 5-6 years [10:15] Hype vs evidence in intermittent fasting…

People in this episode

Host: Danny Lennon

Guest: Prof. James Betts

Topics covered

  • fasting
  • nutrient timing
  • chrono-nutrition
  • continuous glucose monitoring
  • evidence interpretation

Keywords

  • fasting
  • nutrient timing
  • chrono-nutrition
  • continuous glucose monitoring
  • evidence
  • research
  • health outcomes

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