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Think Like a Pancreas: A Practical Guide to Managing Diabetes with Insulin cover
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Think Like a Pancreas: A Practical Guide to Managing Diabetes with Insulin

by Gary Scheiner, MS, CDE

Published: 2004; 3rd edition 2020

Comprehensive guidebook, practical manual

Recommended for:

🧑‍🎓 Teens (13-17)👤 Adults (26+)🎓 Young Adults (18-25)
What the book covers (themes & key ideas)
  • Understanding insulin as replacement therapy - The book explains how the healthy pancreas works and what type 1 diabetes disrupts, then outlines how to mimic that function with multiple daily injections (MDI) or insulin pumps.

  • The building blocks of dosing - Scheiner teaches the formulas and strategies for insulin-to-carb ratios, correction (sensitivity) factors, basal/bolus balance, pre-bolusing and timing of insulin, and adjusting for patterns.

  • Problem-solving highs and lows - One of the book's strengths is its troubleshooting sections: how to identify causes of highs (missed bolus, underestimation of carbs, stress, illness) and lows (overbolusing, activity, alcohol, etc.), and how to adjust accordingly.

  • Lifestyle integration - Scheiner goes beyond math into everyday realities: exercise and sports, travel and time zones, illness and sick days, stress, hormones, and growth (especially relevant for children and teens).

  • Technology and tools - The latest edition includes discussions on continuous glucose monitors (CGMs), hybrid closed-loop systems, and apps, along with pros/cons of different devices.

  • Developing independence and mastery - Scheiner emphasizes that learning to "think like a pancreas" means developing the confidence and decision-making skills to make real-time adjustments rather than relying only on static instructions.
  • What's excellent about this book
    • Highly practical: It gives formulas, examples, and checklists parents and patients can immediately use.

    • Author credibility: Scheiner is both a CDE and a person living with T1D, giving him authority and empathy.

    • Problem-solving focus: Offers not just "what to do" but "why it happens" and "how to fix it."

    • Updated for modern tech: The newest edition covers pumps, CGMs, and automation.
    Where you'll want to supplement
    • Not child-focused: It's written for adults with T1D; parents of young kids will need to adapt concepts with help from their care team.

    • Information density: It's technical at times; some parents may find it overwhelming early after diagnosis.

    • Doesn't replace medical guidance: Ratios and doses are explained conceptually—your child's actual settings must come from the care team.
    Parent-ready guide (inspired by the book)

    How parents can use it:

  • As a reference - Keep it handy to understand the "why" behind your child's dosing instructions.
  • To troubleshoot - When patterns emerge (frequent lows after soccer, morning highs, spikes after pasta), use the book's troubleshooting framework to ask informed questions at clinic visits.
  • For growing independence - Teens with T1D can read sections themselves to start learning how to self-manage.

  • Practical takeaways families can apply:

  • Patterns matter more than single numbers - Don't panic over one high; look for consistent trends.
  • Basal testing - Learn how to confirm if basal insulin is set correctly (with clinical guidance).
  • Flexibility - Ratios and doses change over time; mastering the concepts prepares you for inevitable adjustments.
  • How this book fits among other trusted resources

    Best for: Parents who want a deep technical understanding of insulin management, and older kids/teens ready to learn the science.


    Pairs well with: Emotional/parenting guides like The Type 1 Life or Kids First, Diabetes Second to balance the clinical with the personal.


    Unique role: It's the go-to technical manual for understanding how to mimic pancreatic function with insulin—widely recommended by diabetes educators.

    Verdict

    Bottom line: Think Like a Pancreas is one of the most practical and empowering guides for mastering insulin therapy in type 1 diabetes. It is not written as a story or workbook for kids, but as a technical, problem-solving handbook for anyone managing insulin.


    Most valuable for: Parents who want to understand the mechanics behind their child's care, and teens/adults with T1D seeking confidence and independence in management.


    Worth noting: The book is technical and detailed—best used as a reference guide rather than a cover-to-cover read immediately after diagnosis. Start with emotional support resources first, then dive into this when you're ready for deeper understanding.


    Recommended: Yes, especially for parents who want to truly understand insulin management and for teens ready to take ownership of their care. It provides the knowledge to understand and support your child's care with confidence.