I also have the white tongue problem. From what I have read it is not Candida. I don’t know what is causing it. The diet improves it for a bit but never entirely, and then it comes back again. Not sure what is going on with that since I have been strict with the diet and can’t seem to figure out any food sensitivity that is causing it.
I have gum disease, too. I read about oil pulling just a few days ago as a way to heal it – today is day 3 for me using OP. I had immediate relief from painful gums after the first try so I still do it even though my tongue is tingly all day. It also has a thicker white coating since beginning the OP. Yuck. But, if it heals my gums it is worth it. I am using Olive Oil because of the Candida Diet & food sensitivity to Coconut Oil. Did your boyfriend notice his tongue getting worse because of the OP? What type of oil does he use?