While at work i have noticed that if it has been several hours since i have ate, i become dizzy and sweat alot. sugary foods seem to help faster. why?

Check for glucose: You need to be checked for how your body processes sugar (glucose). The brain depends on glucose for food. If it doesn't have enough, it sends signals via your autonomic nervous system that make you experience the type of symptoms you describe. Please get checked by your doctor. Eating foods that are converted into glucose slowly, like protein, would give a more steady supply of food to your brain.