When I was hooked on oxy's, I lived on sugary snacks. The link between opiates and craving sugar is well-documented. In other words, it would be considered more unusual the fact that you didn't crave sweets when you were 'using', than the fact that you do crave them now that you're on methadone. Assuming you're not diabetic, or *dangerously* overweight, personally, I wouldn't worry too much about it, as long as you don't live on sweets, get some healthy stuff into your system as well, and brush your teeth often ... the sweets aren't gonna kill ya ...