Sugar in the body

Ok, any nutritionists out there~ I have been told that sugar feeds arthritis. So if you drastically cut back on sugar, other than what is 'naturally' found in foods (like prepared sauces, juices, fruit, crackers, etc) how long does it take your body to realize you arent' eating the cookies, cakes, pies........? I am trying to figure this all out.

I know weight bears a huge impact for joints and arthritis....but my hands are not weight bearing joints, so I am tossing that theory out. I have no problem admitting my knees and feet hurt due to extra weight, but hands?

Any suggestions? Knowledge to share?