yes it is it's like smoking
Yes indeed. Your body has adjusted its insulin levels for the accustomed sugar that you have been consuming. When the insulin is no longer needed at such high levels, you will have withdrawal symptoms when the sugar is withdrawn. Be ready for headaches, edginess, and even aches and pains until your body readjusts to normal insulin levels as you withdraw.
One tip. If you gradually withdraw, especially keeping a hard candy around as a withdrawal tool, it will be easier during the first couple of days. The hard candy has less effect than a sugary drink or a quantity of other sugary products. Since the sugar is less than the other products, it can help with those headaches and keep your disposition more balanced during the first stages.