Algin may well help. It is something that one can take with or without amalgams apparently and for some it can be quite a life saver.

Do you get these effects from drinking hot fluids? (after consuming them?). Because they too increase the uptake of mercury from fillings.

Again I am not aware of your situation, whether or not you have fillings/ how many etc....

But certainly it would beinteresting to work out whether this is food or the action of chewing itself. PIty you couldn't take all your food through a straw, so you'd know! (well just for a day or something). I know that is not realistic.