I have been having some issues lately and I think it is sugar related. My office mate had brought in some Skittles and I noticed one day after eating some I was aching so I decided that I should not eat those any more. Then I noticed it with M&Ms. Today it was a donut (I have to learn the hard way don't I!?) I just wonder if it is the sugar or not. How long after eating sugar do you feel achy? This was within about 10 minutes or so and I just wondered if it could really be that fast. Thanks!