Comment by ijustlovemath

Agreed that the value of a CGM is in the change information, and that adding a CGM is probably the biggest quality of life increase for anyone with diabetes. Highly pro CGM if you can get it!

The issue with spectroscopic approaches is the amount of noise can be really hard to disentangle, to the point that you might get really unreliable trend information, where it might even be dangerous if you're making dosing decisions off it. And even if you aren't, getting incorrect trend information doesn't really help you any more than just not knowing it.