A1C Reboot

ARE YOU A MAN OVER 45 WITH PREDIABETES? YOUR NUMBERS DON’T HAVE TO KEEP MOVING IN THE WRONG DIRECTION.

A1C Reboot is a physician-designed metabolic health app built to help men reverse the trajectory of prediabetes — not by tracking everything, but by tracking the right things.

Created by Joseph C. MacDonald, DO, MBA, FACOI — a board-certified internist with over two decades of clinical experience — A1C Reboot is built around one central idea: metabolic health is a feedback loop, and when you measure the right variables, you can control it.

THE CONTROL LOOP SCORE

At the heart of A1C Reboot is the proprietary Control Loop Score (CLS) — a single daily number that synthesizes five clinically relevant pillars of metabolic health:

• GLUCOSE STABILITY — CGM Time in Range (TiR) is your primary metabolic signal. Research published in Nature Communications confirms that higher Time in Range is directly associated with lower HbA1c and reduced cardiovascular risk.
• WAIST CIRCUMFERENCE — Visceral fat is the most modifiable driver of insulin resistance. You will track it, and you will see it move.
• STRUCTURED EXERCISE — Physician-guided workout programming, delivered in the app. Log your sessions, track your steps, and build consistency over 90 days.
• BODY WEIGHT AND BMI — Weekly weight and BMI trends tell the story your lab values will confirm.
• SLEEP — CGM studies show sleep duration is inversely correlated with mean glucose. Poor sleep is not a lifestyle issue. It is a metabolic one.

WHAT YOU TRACK

• CGM glucose data and Time in Range
• Waist circumference
• Daily steps and structured workouts
• Body weight and BMI
• Sleep duration and quality

WHY A1C REBOOT IS DIFFERENT

Most apps track fitness. A1C Reboot tracks metabolic health. There is a difference — and if you have prediabetes, that difference matters.

Published research in npj Digital Medicine found that digital health programs using CGM with structured feedback produced significant improvements in Time in Range, and that higher engagement with the program correlated directly with greater results. A1C Reboot is built on that same evidence-based principle: what you measure consistently, you improve.

Your Control Loop Score gives you one clear number each day. Not a dashboard to decode. Not a dozen disconnected metrics. One score — and a clear understanding of which pillar needs your attention.

WHO THIS IS FOR

• Men 45 and older with prediabetes or elevated metabolic risk
• Anyone using a CGM (Dexcom Stelo, Abbott Lingo, or prescription sensor)
• Patients who want physician-grade guidance between clinical visits
• Men who are done watching their numbers trend the wrong way

YOUR PROGRAM. YOUR SCORE. YOUR REBOOT.

Prediabetes is not a diagnosis to manage. It is a condition to reverse. A1C Reboot gives you the structure, the tracking, and the clinical logic to do exactly that — in 90 days.

Download A1C Reboot and take control of your metabolic health.