(continued from my post below)
This happens when your body doesn't use insulin (a hormone made by the pancreas that helps glucose get into your cells for energy.) properly, and is called insulin resistance. If you have diabetes, your body doesn’t make enough—or any—insulin, or doesn’t use insulin correctly. Glucose then stays in your blood and can't reach your cells for energy.
Type 2 diabetes develops most often in middle-aged and older adults but is increasing in young people. Treatment includes healthy eating and exercise, and sometimes medication to help you meet your target blood glucose levels.
Lots more info at:
American Diabetes Association: https://diabetes.org/about-diabetes/type-2
Mayo Clinic: https://www.mayoclinic.org/diseases-conditions/diabetes/symptoms-causes/syc-20371444
NIH: https://www.niddk.nih.gov/health-information/diabetes/overview/what-is-diabetes

Wearable Monitor FDA Warning:
Do not use smartwatches or smart rings that claim to measure blood glucose levels (blood sugar) without piercing the skin. They are NOT accurate. These devices are different from smartwatch applications that display data from FDA-authorized blood glucose measuring devices that pierce the skin.
https://www.fda.gov/medical-devices/safety-communications/do-not-use-smartwatches-or-smart-rings-measure-blood-glucose-levels-fda-safety-communication

I hope this info and the links are helpful!