Low carbing isn't the treatment for thyroid nor does low carbing present a problem for hypo or hyperthyroid folk. Someone named Mary Solomon proclaimed on her site that hypothyroid folk can't lose weight and now anybody doing a google search for low thyroid and weight loss sees it and panics. Yes if your thyroid is out of range you will not lose, but that would happen on any eating program.
Please see your doctor for any medical issues or problems. This forum is merely to discuss and support one another in our weight loss quest.