I have pre-diabetes. Can I receive a breast reduction?

Thank you for the question.   
Well controlled diabetes or pre diabetes is not a contraindication to breast reduction surgery and/or other elective plastic surgical procedures.  However, diabetics are at a greater risk of infection compared to non-diabetic patients. Always best to check with your primary care physician or endocrinologist for “medical clearance” prior to surgery. Managing any medications around the time of surgery (to avoid hypo as well as hyperglycemia), while you will have altered oral intake, will be important.It will also be important that you select your plastic surgeon carefully; make sure that he/she is a board certified plastic surgeon who can demonstrate lots of experience achieving the types of outcomes you would be pleased with. Then, communicate your goals carefully as well.
 
  Best wishes.

The short answer to your question is yes, you can have a breast reduction.  Your pre-diabetic state, however, speaks to the fact that you may not be in your best overall health.  A breast reduction can help decrease your chest size so that it makes it easier for you to exercise.  This may help your sugar levels.  Having high levels of glucose in your blood makes you more susceptible to postoperative infections and poor wound healing.  That being said, the risks of a breast reduction are still low and the benefits of the surgery for your health may be great. Good luck!