The ABC’s Of A1C

A1C
The ABCs of A1C
Simple, clear A1C guidance For real people

Understand your A1C and take control of your blood sugar.

The ABCs of A1C breaks down what your Type 2 diabetes lab numbers really mean, how they connect to daily choices, and practical steps you can use to lower A1C without getting buried in jargon.

  • Plain-language explanations of A1C, fasting glucose, spikes, and “time in range.”
  • Practical habits you can actually stick with—food, movement, sleep, and meds.
  • Works alongside your doctor’s plan instead of trying to replace it.

Always work with your own healthcare team. This book is educational and not medical advice.

Now on Amazon
Cover of The ABCs of A1C book
The ABCs of A1C
Five Simple Rules for Better Blood Sugar Control
★★★★★ Reader-friendly diabetes education
Available in paperback and Kindle on Amazon.

Clicking “View on Amazon” will take you to Amazon.com where you can see pricing, reviews, and formats.

Inside the book

What you’ll learn in The ABCs of A1C

The book is built around five simple rules that turn confusing lab reports into a clear, daily plan.

How A1C actually works

Why A1C is an “average,” why it doesn’t tell the whole story, and how to read it alongside fasting and post-meal numbers.

Five rules for better blood sugar

A small set of rules that guide eating, movement, and medication timing—without asking you to be perfect.

Spotting patterns, not “good” or “bad”

How to look at your meter or CGM data and see patterns, so you can adjust with your doctor instead of guessing.

Talking with your care team

Questions to ask at appointments, how to bring organized information, and how to advocate without conflict.

About the author

Why this book exists

The goal is simple: give people living with diabetes a clear, believable way to understand A1C and use it.

Keith Williams
Author of The ABCs of A1C

This book grew out of years of watching people get lab results, feel scared or guilty, and then walk away with almost no explanation. Instead of another dense textbook, it’s written in plain English, with the goal of helping real patients (and the people who care about them) make sense of their numbers and daily choices.

I’m not your doctor. I’m giving you tools and language so you and your medical team can make better decisions together.

What readers say

Clear, practical, and easy to re-read

“This is the first time A1C has made sense to me. I finally understand what my doctor is talking about and what I can do between visits.”
— Placeholder review
“Short, clear, and non-judgmental. I’ve shared it with family so they get what I’m dealing with.”
— Placeholder review
From the blog

Latest posts on A1C and blood sugar

Short, practical articles that expand on topics from the book—habits, lab tests, and real-world challenges.

Education

7 Foods that may help reverse Type 2 Diabetes

Posted on Jan 5, 2025 • 5 min read

A1C is an average. That means two people can have the same number but very different daily blood sugar patterns. Here’s how to dig deeper…

Read article →
Habits

Johns Hopkins experts on type 2 diabetes ricks management

Posted on Jan 2, 2025 • 6 min read

You don’t have to overhaul your entire life. We’ll look at a handful of changes that have a real impact when you repeat them.

Read article →
Doctor visits

Coffee and Tea may help protect against type 2 diabetes

Posted on Dec 20, 2024 • 4 min read

Walk into your appointment with questions ready, a simple log of your numbers, and a clear idea of what you want from the visit.

Read article →
© The ABCs of A1C. Educational only; not a substitute for medical care.
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