Practical, cited guides on continuous glucose monitoring, prediabetes, type 2 diabetes, and metabolic health. Filter by topic or search below.
“The person with diabetes who knows the most lives the longest.”
GLP-1 & CGM
The honest answer: on its own, a GLP-1 rarely causes hypoglycemia. Here's the trial data, and the one combination that changes the risk.
Read the guide →Some glucose effects from a GLP-1 show up within days; the full effect builds over weeks as you titrate. Here's a realistic timeline of what to expect.
Read the guide →Why is your blood sugar highest before breakfast, even on Ozempic? The dawn phenomenon is normal hormone biology. Here's what it means and how a GLP-1 fits.
Read the guide →GLP-1 drugs like Ozempic flatten post-meal glucose spikes — the swings your A1C can't see. Here's the mechanism, the evidence, and what a CGM reveals.
Read the guide →Big glucose swings are linked to heart disease, stroke risk factors, and atrial fibrillation. Here's what the evidence shows, and why "linked" is the honest word.
Read the guide →GLP-1s kill appetite by slowing digestion and signaling fullness. Here's why you're not hungry, whether it's safe, and what it means for your blood sugar.
Read the guide →The reason your CGM line goes flat after meals on Ozempic — delayed gastric emptying plus glucose-dependent insulin, explained simply.
Read the guide →A1C is a three-month average; a CGM shows the day. Two people with the same A1C can have completely different glucose. Here's how the two measures differ and when each matters.
Read the guide →New trial data suggests pairing a continuous glucose monitor with GLP-1 therapy adds benefit on top of the drug. Here's the CONNECT signal — and how to read it.
Read the guide →How accurate is your glucose monitor? MARD is the number that tells you — plus why sensor readings lag your blood and when to trust them. Plain-English guide.
Read the guide →A single low reading isn't a hypo. A post-meal spike isn't failure. Here are the most common CGM misreadings on a GLP-1, and what the data actually says.
Read the guide →Will insurance pay for a glucose monitor if you're not diabetic? Usually not — but HSA/FSA often works, and OTC sensors changed the math. Here's the plain breakdown.
Read the guide →Just put on your first CGM? Here's a plain-English guide to what's normal, what to watch, and which numbers actually matter in your first two weeks on a GLP-1.
Read the guide →Thinking about wearing a continuous glucose monitor on your GLP-1? Here's the practical stuff — application, pain, showers, sleep, exercise, and daily wear.
Read the guide →Dexcom Stelo and Abbott Lingo are the two big over-the-counter CGMs. Here's how they compare on wear time, price, accuracy, and app for a GLP-1 user.
Read the guide →Coefficient of variation (CV) tells you whether your glucose is steady or swinging. Here's what the 36% threshold means, and why it's a line to stay under, not a score to beat.
Read the guide →Time in Range (TIR) is the CGM number that shows what your A1C hides. Here's the >70% target, what CV under 36% means, and how to read yours.
Read the guide →Compounded GLP-1s exploded during the shortage — but the shortages are over and the rules changed. Here's the 2026 status and why watching your own glucose matters.
Read the guide →Many people take metformin alongside a GLP-1. Here's how the two work together on your glucose, why it's a low-hypoglycemia pairing, and what a CGM shows.
Read the guide →Tirzepatide vs a GLP-1 on continuous glucose monitoring — the head-to-head trial nobody has run yet. Here's what the evidence does and doesn't show.
Read the guide →Mounjaro and Zepbound are both tirzepatide. The difference is the approved use, not the molecule. Here's what that means for your blood sugar.
Read the guide →Ozempic and Wegovy are both semaglutide. Here's what actually differs (dose and approved use), and why the effect on your blood sugar is essentially the same.
Read the guide →Rybelsus is oral semaglutide — same drug family as Ozempic, but a pill with strict rules. Here's how the oral and injected versions compare for blood sugar.
Read the guide →Semaglutide, dulaglutide, liraglutide, tirzepatide — which flattens glucose best? Here's what the CGM and variability evidence ranks, and where it runs out.
Read the guide →You're on a GLP-1 for weight, not diabetes. Is a continuous glucose monitor worth it? Here's the honest case for and against, without the hype.
Read the guide →People fall into different glucose-response patterns — spikers, dippers, steady. Here's what the glucotype idea means and how a GLP-1 might change your pattern.
Read the guide →Stop a GLP-1 and the weight tends to come back — and so do the glucose swings. Here's what the discontinuation trials show and what a CGM reveals as the benefit fades.
Read the guide →If you're taking a GLP-1 for weight and you're not diabetic, what does a CGM actually show? An honest look at what's known, what isn't, and why you watch your own curve.
Read the guide →An honest map of the three real evidence gaps in GLP-1 and glucose science — the prediabetes vacuum, the missing head-to-head, and the untested variability question.
Read the guide →Drinking on Ozempic or Mounjaro? Alcohol can lower blood sugar, hit harder on an empty stomach, and interact with the drug's slowed digestion. Here's what to know.
Read the guide →Starting a GLP-1 means weeks of dose increases. Here's what to expect on your CGM as you titrate up, and why the steadiness effect isn't just about the highest dose.
Read the guide →What the trials show about stopping a GLP-1: weight and glucose gains are on-treatment, and most people regain after stopping. Here's the honest picture.
Read the guide →Your glucose curve can show the drug working — and some side effects — before you feel them. Here's what a CGM picks up early on a GLP-1.
Read the guide →Feeling shaky or lightheaded on Ozempic? Here's what's usually normal, what points to low blood sugar, and when to actually worry — in plain language.
Read the guide →Rapid weight loss on a GLP-1 can cost muscle — and muscle is where you burn glucose. Here's why protein and strength work matter, and what a CGM can show.
Read the guide →A short walk after eating measurably lowers your blood sugar spike. Here's the evidence, how long you need, and what it looks like on a CGM alongside a GLP-1.
Read the guide →Poor sleep and stress push your blood sugar up through hormones — no food required. Here's how they show on a CGM and why they can blunt your GLP-1's gains.
Read the guide →Eating less on Ozempic means every meal counts. Here's how to prioritize protein, fiber, and timing — and what your CGM reveals about which foods still spike you.
Read the guide →How to use continuous glucose monitoring to titrate and monitor GLP-1 therapy — reading the AGP, setting time-in-range targets, and knowing when to adjust.
Read the guide →How CGM and remote patient monitoring codes stack to fund a GLP-1 monitoring program — including the new 2026 shorter-window RPM codes 99445 and 99470.
Read the guide →Tools & calculators
Convert HbA1c to estimated average glucose (eAG), and CGM mean glucose to GMI, with the standard clinical formulas.
Open calculator →See your TIR, time below range and above range against the international consensus CGM targets.
Open calculator →Plain-English definitions of the metabolic-health and CGM terms used across our guides.
Browse the glossary →Continuous glucose monitoring
What continuous glucose monitoring is, how it works, what the metrics mean, and how to read your data — the full library, one place to start.
Start here →The sensor, the interstitial fluid, the lag behind blood glucose, and the warm-up period — in plain English.
Read the guide →What MARD means, why accuracy varies, and when a finger-stick still matters.
Read the guide →What each measures, trends vs single points, and where finger-sticks are still needed.
Read the guide →Real-time vs scanning, factory-calibrated vs not, skin-worn vs implantable — a neutral overview.
Read the guide →The AGP report, the median line, the overnight window, and the patterns worth looking for.
Read the guide →How the standardized one-page report overlays days of data into a single picture.
Read the guide →What a sensor can and can't tell someone without diabetes — educational, not diagnostic.
Read the guide →Prescription vs OTC, wear time, alerts, phone compatibility, and cost — what to weigh.
Read the guide →What each measure actually tells you, when each is used, and why the two can disagree.
Read the guide →Why an average isn't enough, and the consensus targets that describe the shape of control.
Read the guide →What the Glucose Management Indicator means, and why it can differ from a lab HbA1c.
Read the guide →What variability and coefficient of variation mean, and how a CGM reveals the swings.
Read the guide →Prediabetes
What prediabetes is, the numbers that define it, what raises your risk, and what the evidence says about turning it around.
Start here →Higher-than-normal glucose that isn't yet diabetes — the three ways it's defined, in plain language.
Read the guide →Why there usually aren't any — and why that makes screening matter.
Read the guide →The three tests — A1c, fasting glucose, and the OGTT — and the ADA cutoffs.
Read the guide →What the 5.7–6.4% band means, and how it sits between normal and diabetes.
Read the guide →Age, weight, family history, inactivity, and more — what raises the odds.
Read the guide →What the evidence does and doesn't support about returning glucose to normal.
Read the guide →Evidence-informed eating for prediabetes — principles, not a prescriptive plan.
Read the guide →How activity improves insulin sensitivity, and general activity guidance.
Read the guide →IFG explained — fasting 100–125 mg/dL, and how it differs from IGT.
Read the guide →IGT explained — the post-glucose-challenge result and what it signals.
Read the guide →What a CGM can and can't show before diabetes, and where standard tests still lead.
Read the guide →Type 2 diabetes
What type 2 diabetes is, how it's diagnosed and managed, and where continuous monitoring and decision support fit — the full library, one place to start.
Start here →Insulin resistance, relative insulin shortfall, and rising glucose — the most common form of diabetes, in plain language.
Read the guide →Thirst, frequent urination, fatigue and more — the signs that often develop slowly or not at all.
Read the guide →The four ADA tests — A1c, fasting glucose, the OGTT, and random glucose — and the cutoffs.
Read the guide →Two different conditions that both raise glucose — how the causes and management differ.
Read the guide →Why cells stop responding to insulin, and how it precedes prediabetes and type 2.
Read the guide →Why the common <7% goal is a starting point, and how targets are individualized.
Read the guide →General before- and after-meal targets, and how they relate to A1c.
Read the guide →No single diabetes diet — the evidence-informed principles that help.
Read the guide →How activity improves insulin sensitivity, plus general aerobic and resistance guidance.
Read the guide →What continuous monitoring reveals — including for people not on insulin.
Read the guide →What remission means, how it's defined, and what the evidence supports.
Read the guide →How sustained high glucose can affect eyes, kidneys, nerves, and the heart.
Read the guide →Nerve damage from high glucose — symptoms, foot-care, and prevention.
Read the guide →Damage to the retina's vessels, why exams matter, and how to protect vision.
Read the guide →How diabetes affects the kidneys, the screening tests, and what protects them.
Read the guide →An educational tour of the main drug classes — individualized, clinician-led.
Read the guide →How the common first-line medication works, and its usual considerations.
Read the guide →How this class lowers glucose and often supports weight loss.
Read the guide →Low glucose — who's at risk, the warning signs, and the 15-15 approach.
Read the guide →The care gap — how self-monitoring, CGM, and remote monitoring keep type 2 on track.
Read the guide →Remote patient monitoring
What remote patient monitoring is, which conditions qualify, how Medicare reimburses it, and how practices implement it — the full library, one place to start.
Start here →The plain-English definition, how the data flows, and how it differs from telehealth.
Read the guide →How the three remote-care code families compare and when each applies.
Read the guide →The chronic conditions RPM is most commonly used for, and why.
Read the guide →CGMs, BP cuffs, pulse oximeters, scales — what qualifies and how data reaches the clinic.
Read the guide →What consent RPM requires, and how to document it correctly.
Read the guide →How a practice actually runs RPM day to day, step by step.
Read the guide →Current CMS rules, the Physician Fee Schedule, and what changed.
Read the guide →What RPM adds between appointments, and what it doesn't replace.
Read the guide →How RPM fits into a broader population health strategy.
Read the guide →The four core CPT codes — 99453, 99454, 99457, 99458 — explained.
Read the guide →Comparisons
Levels, Nutrisense, Signos and Endobits compared by cost, model, and who each is for.
Read the guide →A consumer wellness membership vs a clinical report from your CGM data — an honest, cited breakdown.
Read the guide →Dietitian-coaching subscription vs affordable, doctor-facing CGM analysis — how to choose.
Read the guide →Metabolic health & more
Prediction accuracy by forecast horizon, plus live US clinical results — fewer severe hypos, more time in range, panel-wide triage in seconds.
See the performance →The abnormal glucose patterns that show up years before diabetes — what they mean and how they're spotted.
Read the guide →Why glucose climbs before you wake, and how a CGM trace tells it apart from a rebound.
Read the guide →The after-meal glucose drop — symptoms, what it may mean, and when to seek evaluation.
Read the guide →What the research does and doesn't support, framed carefully as decision support.
Read the guide →Why CGM is moving beyond insulin users, the evidence, and how a primary-care team can start.
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