Hello everyone! Does anyone know if I can have brown sugar when I am on a low iodine diet?

I am on a low iodine diet because I am a thyroid cancer patient. It has been a very restrictive diet, because I have to avoid all foods that are procesed, dairy products, food with sodium already in it, restaraunt food,... and the list goes on and on. I was told not to have GRANULATED SUGAR but does that mean that brown sugar is ok?????