Questions Related To Diabetes Counsellors

My sugar level is below 50 I eat a lot but don't know how to increase my sugar level. I feel dizziness and headache all the time. What to do

Is it okay to soak feet in cold water?

I wanted to ask that once the blood sugar level goes high.. does this mean that the person has diabetes or is it just a temporary thing and it will decrease with some proper diet and exercise? My family has diabetic history so I do...