sugar levels

I am not a diabetic but man when I go for very long with out eating I get the shakes and cannot concentrate.  Does anyone else have this problem?

I do!  When I was pregnant over 14 years ago (with what I now believe was a miracle since I have PCOS), when I took the gestational diabetes test, my blood sugar dropped so low within an hours time, they didn't think I even drank it.  Then the doctor asked if I had eaten anything all day.  I told him that I have to eat or I get nauseas, light headed, shakes, etc.  That's when I found out that I have Hypo-glycemia.  This is Low Blood Sugar.  Diabetics get it when they take their insulin, but don't eat enough.  My current PCP doesn't believe a person without diabetes could have hypo-glycemia.  But I don't have diabetes, but I've never have been tested since to prove either.  There is a 6 hour test where they take a fasting blood sugar level, then give you something, probably a sucrose solution, then take blood sugar readings every half hour for the six hour duration.  (I read it in a book when I was researching hypo-glycemia.)  

Anyway, I have to eat snacks throughout the day in order to keep up my blood sugar.  The best thing to do is stay away from sugars (I know ~ this is extremely hard cuz you crave it!), and eat high protien foods.  The Atkins diet is probably the best way to control your blood sugar. 

I wish you the best!

I agree...sounds like hypoglycemia (low blood sugars) to me.  Try to not skip eating for too long.  Eating 5-6x a day (small amounts) help keep blood sugars regulated.  Good luck... kristy