"When those affected go without food for prolonged periods, they weaken and sometimes tremble — the symptoms of low blood sugar.

"They get shaky, they get sleepy," Hirschfeld said.

For adults, the problem is addressed easily with a quick snack.

"They snap out of it," Hirschfeld said."

My mother always had these symptoms, and like the article suggests, she'd get shaky and weak; one time she even passed out.  And doctors told her she had a low blood sugar problem.