I have been feeling body aches and muscle aches for the past year. could my sugary diet be the cause of this?

Maybe/not. the symptom pattern is vague & could represent a number of issues. Some may be simple & easy to fix while others may be a sign of a worrisome illness. It is best to write down all your symptoms in a list you can review with your doc at a scheduled visit.

Agree, aches and pains are not a very specific symptom, and you deserve a good history and physical from a doctor you trust. Some common lab tests can eliminate serious illness. In the meanwhile, optimizing your diet with fruits, vegetables, grains, fiber and calcium (and minimizing simple sugars) is a good idea and may help with your pains.