s diet), and in any case it is far higher than it should be (
Normal fasting is in the low 80s, with acceptable
level being < 95). 128 is far higher than acceptable level.
I am not very happy that your doctor has recommended diet and exercise alone, without doing any further testing.
The reason is that a fasting number doesn't give a full picture of what is happening. You may have a high fasting number, but normal numbers the rest of the day.