<s>[INST] I am a 62 year old male with type 2 diabetes, since gastric by pass surgery I am no longer hyperglycemic but, I have episodes of low blood sugar now. What is a healthy blood sugar level? right now my blood sugar is 86 and I am sleepy and yawning, yesterday I was sleepy on the road to work and when I checked my blood sugar it was 70 but, I perked right up when I had a diet supplement milkshake. [/INST] Hi thank you for querry,As there is diffrent blood sugar levels in fasting condition and 2 hours after food.FBS is taken in fastong condition it should be 60 to 110.After food its RBS should be below 180 in diabetic patients.you should regulate your sugar level.Take food and snakes at proper time with life style modification also.consult your Dr.in case of severe hypoglycemic attacks or hyperglycemia or in case of any complication regarding medication and sugar level.Hope the answer will help you.wish you a good health. </s>