If you don't have diabetes in your real life, but you dream that you are diabetic, then the dream's interpretation is that you have troubles enjoying the sweet things in your life. You worry too much, instead of giving enough time enjoying the moment.
You may look in dreams interpretation for other symbols :
Diamonds : The interpretation of seeing diamonds in your dream is related to your self-integrity. You may find moments of clarity in matters that were unclear until now. ... html">
Diapers : The interpretation of seeing or wearing a diaper in your dream represents childish and puerile attitudes / actions. You could be too dependent on others. The ...