Hello doctor. My father he is 52 years has diabetes. He got to know before 1 month when he went to doctor and doctor said he has 480 sugar. Then he took medicine and another test after few days came out with 174 sugar level and third test is 168 sugar level. Now before 1 week the test came out with 91 sugar level so doctor said this is too low. It should be increased till 120. So please suggest me what he should do and eat to attain that level. He is been too weak. And I am so worried about my father. Please suggest.