I've just started on metformin and I'm having my wisdom tooth removed at the beginning of January. Will I have to be extra careful with what I eat over Christmas to get my sugar levels as good as possible so that my mouth will heal ok as I know that the healing process can take longer in diabetics and there can be complications? Or can I have a few treats as the metformin helps to lower the sugar levels? I was diagnosed with diabetes a few years ago and tried to get my levels down through diet but haven't succeeded. I feel I don't get any guidance from my surgery, only the annual check and there's so much information on the internet, I don't know where to turn. Finding it really hard to know what to eat everyday.