Blood glucose levels affect lots of health functions. Diabetes represents an extreme end of the spectrum where the body's ability to regulate these fluctuations fails, but just because your body can get your levels in control eventually doesn't mean you won't suffer from the negative effects of it needing to do so.

Maintaining consistent glucose levels improves mental health, weight management, sleep quality, muscle recovery, systemic inflammation, cardiovascular health, and may even slow aging. There isn't much clinical data at the moment on how to use blood glucose measurements to control glucose levels outside of people with diabetes (there are lots of things that impact it besides just sugar intake), but there are definitely major theoretical benefits if it can be worked out.

Also, just reducing the incidence of diabetes would be no small accomplishment. About 3.5% of global disability adjusted life-years (DALYs) are due to diabetes. As of 2021 it was the 7th largest contributor of global DALYs.

Cardiac surgery, burn units, ICU, neuro come to mind. All have been studied to show mortality and complications improvements with AGC, but unfortunately the commercial technology has not materialized yet.

I’m willing to bet we can see longevity improvements from better blood sugar control. Not 100% certain but extremely likely, this would include potential heart attack and dementia reduction…

Ketones have some dieting and weight loss applications, so I guess you could do better real time tracking of how you're digesting carbs and when it's okay to eat? maybe

Preventive medicine is a bit one. If your fitness watch could measure blood glucose, I think it would be a ton more impactful in terms of health outcomes.

Also rare genetic issues like GSDs and FAODs may benefit immensely from dual glucose and ketone metering. Next we need potassium and magnesium meters and that will benefit the people with rare renal wasting syndromes like Gitelman and Bartters

Metabolic psychiatry is rising, though very slowly. You do "epilepsy keto diet", and may work in bipolar/schizophrenia (need GKI 1-2, it's not keto for weight loss). But you don't need the continuous monitor, normal ketone monitor is fine, because the food list is very narrow.

The continuous monitor should help until you get the hang of the diet, it's a bit hard to maintain, but if it works, worth it.

"management" is the key word. Early diagnosis might help a lot not just with T1 but also T2.

Early diagnosis would save a lot of pain and suffering... and money.

I worked with an older T1 and apparently a bit less than half of kids diagnosed with T1 are diagnosed unconscious during a DKA event in the ER. "Treatment" cost, or at least requested revenue LOL, is at least $30K for an ER visit like that, and it also costs at least some months (years?) off their expected lifespan.

Figure about 0.5% of the population in the USA is T1, you read stuff like "about two million T1 diabetics" in the USA. So early T1 diagnosis would save the country overall about $30B just in DKA treatment alone at time of initial diagnosis.

If you could screen an entire population for less than $30B total lifetime cost, it would be financially rational to prescreen for T1 rather than waiting for ambulances to present incredibly sick kids. And potentially profitable.

Prescreening the entire population for metabolic disorders is quite plausible as a "tech startup idea" as the alternative is waiting for them to arrive in an ambulance while extremely sick/nearly dead. Lets say it could be done for $10B, leaving $10B for startup profit (charge insurance companies $20B which is not bad....) and $10B in lowered health care costs for the country in general, not to mention less suffering in the population. A win-win scenario.

IF blood sugar related disorders could be pre-screened for less than $10B total cost. A solid "maybe"? Plausibly a startup doing blood sugar prescreening would be a "multibillion dollar company" although not a trillion dollar unicorn. Still a good idea.

Metabolism, and the endocrine system in general, is very responsive to physical activity. Even in athletes, glucose can have significant ups and downs when it gets intense.

It would be interesting to see this technology branch out into monitoring hormones, minerals, vitamins, etc. For all of human history, the closest we've had to realtime monitoring is just our mood. It would be life changing for anyone to have this feedback.