I am about 48. My work involves a lot of sitting and hearing other people. I have been sent back a couple of times when I went to give blood as I was told that my BP was low. It is otherwise normal -120-80, sometimes 110-70. Also both my parents are diabetic and are on insulin and I am may be a good candidate for it. However so far I have not got it. Couple of times recently when I checked my diabetes, my fasting was about 80 and post lunch was 56 and 58. My querry to you is this - Out of 5 days of the week I feel very drowsy atleast 2 to 3 days at around 12 noon or around 4pm (which lasts for about 45 min) and I have to struggle trying to concentrate and feel as if I am drugged? What is your diagnosis of this and what investigations need to be done?