It is a well known fact that Low blood sugar is dangerous for Diabetes .....if the blood sugar falls below 80 mg/dl.....it would harm in many ways... mainly CV risk and at times a person can collapse ....
Fasting blood sugar more than 126 mg/ dl is also not desirable though not as dangerous as low blood sugar below 80mg/ dl.....but if fasting blood sugar remains more than 126 gm/ dl consistently , it could gradually affect the body organs...
Now a study reveals that even for Non- Diabetes, low fasting blood sugar less than 80 mg/ dl increases CV related Death ...
Please see the link for the study...
Stay Safe... Stay Healthy